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HTC T8585EUBLK
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HTC T8585EUBLK
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Customer Review:
Will change from HD2 BlackBerry Pearl where I was really excited about, but the window is destroyed in many ways.
PS: I’m not a fan of Mac-boy, I hate the fact that the products of Apple. All my computer and a laptop with Windows 7, so this review is anything but impartial.
————————————————– ————————————————– ———————————————-
Cons:
1> This phone has so many features, but Windows seems to have locked a lot of original short screen, registry settings, not MP3 ringtones, video clips for the browser Opera Web, Options, Task Manager, and so on. The problem is that it is impossible, you can only play with the code and problem solved. But you have to download any software to edit the registry, and you know what you do. Why not give us a while before we all understand?
2> update the phone and you will lose all data and settings, I mean everything. It was slippery Microsoft, you can add only a backup in ActiveSync on your garbage?
3> It is available for Windows Mobile 7 information would be great, because my head really good reviews on it. But HD2 does not meet the “hardware” for the Seventh Win Mobile
4> You should use both hands to use the phone effectively. Or have a good hand. Ex. The browser is the way the address bar at the top, but the navigation is the way to the bottom, making it difficult to use with one hand.
5> I have to click in so many different places just to get my address above. Which unfortunately I can not even add my card main menu.
6> NO EXIT button for anything. If I click the back or “X” in the upper right corner stop for the Windows Mobile 6.5. That means cuts. We go to the Task Manager every time to stop the program. That drains my battery in case I forget.
7 hardware> is so strong, but the Windows Media Player will not play more videos by default. I had to download another freeware program, which got uninstalled when I upgrade.
8> When the battery is nearly dead, turn off the phone together, so there is no access to contacts, access time, alarms, messages or instructions. It gives the opportunity to work at a fair minimum required resources.
9> I can not see the clock or missed calls placed or received. I can not even see the clock when you set the alarm, you should return to the main screen to check the time.
10> The sound quality is good, maybe it’s just me, because my Pearl (8200) is a speaker and bass, which is much better than speakers HD2.
————————————————– ————————————————– ————————————-
Pro:
Its really cool. It looks very smart.
The camera is super awesome. I’ve never owned a mobile phone, and with this great camera.
I like the feel of it is not difficult.
Once you get over the cold is all about usability, which is severely lacking (at least compared with blackberries).
In conclusion, it may actually be better if you have received, not just the operating system shipping out this amazing phone. I am really disappointed with the decision of the HTC to go with Windows Mobile 6.5. When Windows 7 is just around the corner (it could have proposed a deal with Microsoft to support HD2 contract).
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BuyingHTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Excellent Smartphone. Awesome iPhone killer
The HD2 is the best windows mobile smartphone. Period.
The screen is HUGE and the 1 Ghz processor is incredibly fast. I owned a Treo Pro and it wasn’t reliable. The HD2 is fast, can multitask with no trouble at all and the screen resolution and brightness is amazing. Many friends who are iPhone owners see it and begin questioning me about the phone. It’s really a pleasure to watch videos and read documents on this screen. Camera works great. Did I mention the double LED flash?
The HTC Sense UI works very well. HTC really did a good job with the HD2.
DiscountHTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Excellent product
This is my third HTC phone and it’s the third time I’m totally satisfied with HTC’s products. My past ones were HTC Tilt, HTC Fuze and now this one, the HD2. As a technician I always look for many things and details and this phone, in my opinion, was carefully designed, feels durable, you know: metal parts, screws (instead of crappy plastic tabs), solid and well finished. Regarding performance it’s very fast and responsive, the 1Ghz processor does its job handling the OS (WM 6.5), programs, music, pictures and video in a smooth and fast way. Handling pictures with this speed and multitouch feels very good (I must not forget to mention the big, bright and beautiful screen it has). I’ve put some movies (divx and xvid ones) and the video reproduction is perfect, even with subtitles. Sense 2.5, the HTC’s graphical user interface is well designed, practical and customizable (search the web for it), works flawlessly and it’s eye candy. Phone calls’s sound quality is better in my opinion than my previous phone, GPS (I use Garmin) works very well, also wifi, bluetooth didn’t use yet. I loke taking pictures with this phone because you can touch in the screen the object you want to make focus on, and works. Two leds for flash (and for flashlight or torch!) gives a good amount of light. Picture quality is enough for me.
Good luck!
ow PriceHTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Is this phone ROM updateable? Hopefully it is not like my RUS version
I bought the HD2, unlocked etc., a few month’s ago from [...] to evaluate it as the platform for a mobile application development project. I noticed it had Russian literature in the package when I received it. Phone works fine and has English language interface. So it has been awhile and I was looking into ROM updates. WHen I punched in the serial number HT9C4NW03488 on [...] support site, it tells me it only updateable to ‘ROM Upgrade for HTC HD2(RUS)’.
The HTC factory support says this unit will be Russian language if I run this ROM update. They will provide factory repair, but no ROM update support. They say to contact seller for correct ROM update. The seller, [...], says 30 days is up, no support from them. Upon further questioning, they say to contact Brainstorm (1 626 330 0636) for support. Brainstorm is not responding to technical support questions.
I am not averse to ‘kitchen ROM’ updates and have kept Dell Axim units going as far as WM6.1 using unofficial ROM releases but not being able to officially update a brand new $700 phone is troublesome to think about. I would just suggest any purchasers of this ‘international’ version look into the update issue if they share my concern.
Shop ForHTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Expectations exceeded
OK! I bought this phone considering two main reasons:
1.- I wanted a Widows mobile phone
2.- I wanted a gigantic screen to surf the web, watch videos and pictures, etc.
This phone runs Windows Mobile 6.5 with HTC Sense which is an excellent HTC Shell, brilliant, executive, serious, innovative, useful, customizable and extremely user friendly. First request has been fulfilled.
This is the greatest screen you’ll find… There’s just 1 device that comes closer (Toshiba TG01) and it is 0.2 inches smaller (Toshiba 4.1″ / HD2 4.3″) So my second reason is clearly covered. Indeed it is bigger than what I thought and I am obviously happy about it.
Extras: A LOT!!! The design is perfect, but device’s pictures describes it better than my words, it is so elegant and I like it very much.
Camera resolution is fine (not the best) but it does its job. Still pictures are very nice and video recording quality is also very good. I am very impressed about taking still pictures on dark environments beacuse it gets a highly brilliant and beautiful pictures. Its two led flash allows you to photograph almost anything on black dark environments (as long as it is closer enought to light it)
The capacitive screen prevents unwanted touches from any other thing that is not your finger (or skin) and it has a proximity sensor so you won’t click buttons with your face when talking on the phone. This proximity sensor turns off the screen when you place the phone on your ear and turns it back on when removed.
Battery life is amazing considering 1GHz processor and extra giant screen, I get more than 24hrs of power listening to music, placing and receiving calls, sending and receiving SMS, MMS, surfing the web through WiFi, GPRS, EDGE or 3G (any available) and “playing” with GPS, google maps, Garmin, etc.
It comes with an extremely addictive game (Teeter) that uses the built-in accelerometer to move a ball while you move the phone, the objective is to insert the ball in a green hole preventing the gray ones.
It has a built-in connection with Facebook, Twitter, Youtube and Windows Live, so your contacts are always up-to-date with status, tweets, profile pictures and even birthdays! (it stores birthdays on the calendar and alerts you on the go)
Microsoft has a very useful software “MyPhone” (not exclusive for this device but 4 all Windows Mobile phones) which allows you to sync contacts, calendar, pictures, text messages, music, documents, storage card contents and even location. This lets you change your device and by simply synchronizing with a couple of clicks, your new device will be exactly as the old one, and you don’t even need a computer ’cause it stores the content on your Windows Live account. (I’ve heard about a lot of BB users who loses their contacts when updating the BB messenger) So this deserves a big “Hurrah” for Microsoft. I found it soooo useful and important.
The stock manager allows you to keep track of your stocks, always up-to-date, it can even show graphics for 1 day behavior, 5 days, 1 month, 3 months, 6 months, 1 and 2 years.
Storage card is placed below the back cover and it is not below the battery, so you can change it while phone is still on. It supports up to 32 GB microSD HC.
Applications included are very useful, I saw a review that talks about the simple calculator and this is wrong… it is not so simple, it has a simple calculator when holding the phone in a vertical position and you can get a scientific calculator if you turn your phone and hold it horizontal.
The MP3 trimmer allows you to cut an MP3 file in a determinated position and save and extract of it to use it as a ringtone.
Office Mobile includes OneNote where you can write using the keyboard or handwritting. (I also read a review that says that this phone won’t let you handwrite to create a message), this is also wrong… you can turn on this function on the keyboard options while you are writting your message.
WorldCard Mobile (found on tools) is an OCR recognition engine that lets you take a picture of a bussiness card and it recongnizes names, email, website, address, phones, etc and save it to a new contact so you don’t have to write it manually.
Remote Desktop Mobile lets you connect to any PC, the digital compass can be combined with google maps to get directions or orientate on unknown places and this HD2 can be configured as a WiFi router to use your mobile internet connection everywhere (GPRS, EDGE or 3G) so your laptop will be always online no matter where you are, it can connect to a network or bluetooth printer to print your documents on the go including Acrobat PDF documents. The Opera browser and even IE are flash compatible and you can navigate almost as if you are in front of your desktop PC.
The performance for this device is impressive with its 1GHz processor and as if this is not enought out there are millions of software apps that can be installed and customize your phone covering all your needs.
So, I can see no reasons why not to buy this monster. I hope that my review helps you decide what you want.
OrderHTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Very nice gadget
I received mine in the end of December. A month is probably not enough to discover all bugs but so far I’m happy with the phone.
First of all, it is really fast. The 1GHz processor does it’s job.
The screen resolution is high and the screen size is big enough to surf the web with comfort.
HTC shell is something new to me (I used to have E-ten with Spb Mobile shell) but getting used to it.
Cannot say that I’m impressed with the still picture quality (SE phones have better pictures with less Mpx) but video recording is relatively good. There is no button for shutter so you always have to click on the screen to take picture – not convenient.
I need to charge my phone every second day – that definitely exceeded my expectations, taking into consideration fast processor and big hi-res screen.
The screen uses almost full width of the body, which sometimes causes unexpected clicks when I grab the phone (slowly getting used to it). When browsing e-mails the shell has button “reply to all” on the left side and when you click it, it changes to “send”. One time I grabbed the phone and it replied to all and sent an empty message to a huge distribution list. So keep it in mind and be careful 
I hope there will be a way to protect it somehow.
The phone is bigger than I expected – it’s exactly the size of 12oz beer can (you can hide one behind the phone).
The sound level and quality in conversations is excellent. Also, my Highlander hands-free connects very quickly with good sound level.
So far I did not have chance to use built-in GPS. I don’t expect anything special comparing to other similar phones.
It does not have a stylus. If you turn the phone, full size keyboard is big enough but.. I think I will get a stylus. At least you need one, when you surf Internet.
Overall – some little flaws, which I found so far, will not be enough to downgrade my 5 star rating. I really enjoy the phone and recommend it to others who is ready to spend [...] bucks on a gadget.
HTC HD2 T8585 Unlocked Smartphone With 5 MP Camera, Windows Mobile 6.5, Wi-Fi, GPS – International Version With Warranty (Black)
Best Phone Ever
I’ve read on the internet an comment from an owner of this Pocket PC and she seems to be very disappointed in this miracle.
Here is the link – [...]/ref=cm_cr_rdp_perm
Because I cannot post comments on the other amazon.com, I just wanted to spit it out somewhere, so I guess American amazon will work.
Here is the answer:
You seem to be somehow frustrated by this mobile phone. You don’t like almost ANY of it’s features, thus it is a very functional and ergonomic device. I was laughing my a** at the part where you said about Word, Excel… Go buy yourself a netbook. Come on people, netbooks are netbooks, notebooks are other thing, PCs and Macs – another thing. This is a Smartphone/Communicator/Pocket PC, not a desktop or whatever! When you will understand that a device like this is meant to simplify your life and help you ON THE GO with most of your tasks, while on the move, or when you don’t really have access to a real desktop computer? It is not supposed to make for you reports, graphs or cook a cake for God’s sake, it is just a freaking cool pocket PC with a very (very) good hardware base and an very (very) appealing and beautiful interface. Peace.
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eXceed – fast action shooter freeware
How Can I Get Started On A RC Helicopter Hobby?
I want to get a RC Helicopter, because i need to start a new hobby. Where can i get all the parts to a helicopter, with instructions to build one? I want to buy online, and i want to start before June/July.
Syma S030 Newest Model 3CH Bell 206 Rescue
Exceed Verb
Exceed Verb
Grammar and syntax questions?
Ok so, I have this homework which is WELL hard…
The words the brackets are either nouns or verbs. You have to turn them into adjectives…
The afternoon’s (circle) tour was over too quickly because of the (exceed) speed at which the coach was driven.
A (precipice) ridge on the side of the mountain proved to be the most (peril) part of the climb.
Ok so I just really need someone to explain to me what the answers would be, and why…
Thanks :}
() are parentheses. [] are brackets. {} are braces.
circular http://www.learnersdictionary.com/search/circular
excessive http://www.learnersdictionary.com/search/excessive
precipitous http://www.learnersdictionary.com/search/precipitous
perilous http://www.learnersdictionary.com/search/perilous
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Alan Szabo on CRACK moves with an RC Helicopter
Alan out does himself when asked to do “crack” moves (rapid stick movements) with an RC Align 600 nitro RC Helicopter. Full sized video available on helifreak.com
Syma S030 Newest Model 3CH Bell 206 Rescue
Dynam E-Razor 250 Pro
Dynam E-Razor 250 Pro
All about FTP [MUST KNOW]
Setting Up A Ftp:
Well, since many of us have always wondered this, here it is. Long and drawn out. Also, before attempting this, realize one thing; You will have to give up your time, effort, bandwidth, and security to have a quality ftp server.
That being said, here it goes. First of all, find out if your IP (Internet Protocol) is static (not changing) or dynamic (changes everytime you log on). To do this, first consider the fact if you have a dial up modem. If you do, chances are about 999 999 out of 1 000 000 that your IP is dynamic. To make it static, just go to a place like h*tp://www.myftp.org/ to register for a static ip address.
You’ll then need to get your IP. This can be done by doing this:
Going to Start -> Run -> winipcfg or www.ask.com and asking ‘What is my IP?’
After doing so, you’ll need to download an FTP server client. Personally, I’d recommend G6 FTP Server, Serv-U FTPor Bullitproof v2.15 all three of which are extremely reliable, and the norm of the ftp world.
You can download them on this site: h*tp://www.liaokai.com/softw_en/d_index.htm
First, you’ll have to set up your ftp. For this guide, I will use step-by-step instructions for G6. First, you’ll have to go into ‘Setup -> General’. From here, type in your port # (default is 21). I recommend something unique, or something a bit larger (ex: 3069). If you want to, check the number of max users (this sets the amount of simultaneous maximum users on your server at once performing actions – The more on at once, the slower the connection and vice versa).
The below options are then chooseable:
-Launch with windows
-Activate FTP Server on Start-up
-Put into tray on startup
-Allow multiple instances
-Show “Loading…” status at startup
-Scan drive(s) at startup
-Confirm exit
You can do what you want with these, as they are pretty self explanatory. The scan drive feature is nice, as is the 2nd and the last option. From here, click the ‘options’ text on the left column.
To protect your server, you should check ‘login check’ and ‘password check’, ‘Show relative path (a must!)’, and any other options you feel you’ll need. After doing so, click the ‘advanced’ text in the left column. You should then leave the buffer size on the default (unless of course you know what you’re doing ), and then allow the type of ftp you want.
Uploading and downloading is usually good, but it’s up to you if you want to allow uploads and/or downloads. For the server priority, that will determine how much conventional memory will be used and how much ‘effort’ will go into making your server run smoothly.
Anti-hammering is also good, as it prevents people from slowing down your speed. From here, click ‘Log Options’ from the left column. If you would like to see and record every single command and clutter up your screen, leave the defaults.
But, if you would like to see what is going on with the lowest possible space taken, click ‘Screen’ in the top column. You should then check off ‘Log successful logins’, and all of the options in the client directry, except ‘Log directory changes’. After doing so, click ‘Ok’ in the bottom left corner.
You will then have to go into ‘Setup -> User Accounts’ (or ctrl & u). From here, you should click on the right most column, and right click. Choose ‘Add’, and choose the username(s) you would like people to have access to.
After giving a name (ex: themoonlanding), you will have to give them a set password in the bottom column (ex: wasfaked). For the ‘Home IP’ directory, (if you registered with a static server, check ‘All IP Homes’. If your IP is static by default, choose your IP from the list. You will then have to right click in the very center column, and choose ‘Add’.
From here, you will have to set the directory you want the people to have access to. After choosing the directory, I suggest you choose the options ‘Read’, ‘List’, and ‘Subdirs’, unless of course you know what you’re doing . After doing so, make an ‘upload’ folder in the directory, and choose to ‘add’ this folder seperately to the center column. Choose ‘write’, ‘append’, ‘make’, ‘list’, and ’subdirs’. This will allow them to upload only to specific folders (your upload folder).
Now click on ‘Miscellaneous’ from the left column. Choose ‘enable account’, your time-out (how long it takes for people to remain idle before you automatically kick them off), the maximum number of users for this name, the maximum number of connections allowed simultaneously for one ip address, show relative path (a must!), and any other things at the bottom you’d like to have. Now click ‘Ok’.
**Requested**
From this main menu, click the little boxing glove icon in the top corner, and right click and unchoose the hit-o-meter for both uploads and downloads (with this you can monitor IP activity). Now click the lightning bolt, and your server is now up and running.
Post your ftp info, like this:
213.10.93.141 (or something else, such as: ‘f*p://example.getmyip.com’)
User: *** (The username of the client)
Pass: *** (The password)
Port: *** (The port number you chose)
So make a FTP and join the FTP section
Listing The Contents Of A Ftp:
Listing the content of a FTP is very simple.
You will need FTP Content Maker, which can be downloaded from here:
ht*p://www.etplanet.com/download/application/FTP Content Maker 1.02.zip
1. Put in the IP of the server. Do not put “ftp://” or a “/” because it will not work if you do so.
2. Put in the port. If the port is the default number, 21, you do not have to enter it.
3. Put in the username and password in the appropriate fields. If the login is anonymous, you do not have to enter it.
4. If you want to list a specific directory of the FTP, place it in the directory field. Otherwise, do not enter anything in the directory field.
5. Click “Take the List!”
6. After the list has been taken, click the UBB output tab, and copy and paste to wherever you want it.
If FTP Content Maker is not working, it is probably because the server does not utilize Serv-U Software.
If you get this error message:
StatusCode = 550
LastResponse was : ‘Unable to open local file test-ftp’
Error = 550 (Unable to open local file test-ftp)
Error = Unable to open local file test-ftp = 550
Close and restart FTP Content Maker, then try again.
error messages:
110 Restart marker reply. In this case, the text is exact and not left to the particular implementation; it must read: MARK yyyy = mmmm Where yyyy is User-process data stream marker, and mmmm server’s equivalent marker (note the spaces between markers and “=”).
120 Service ready in nnn minutes.
125 Data connection already open; transfer starting.
150 File status okay; about to open data connection.
200 Command okay.
202 Command not implemented, superfluous at this site.
211 System status, or system help reply.
212 Directory status.
213 File status.
214 Help message. On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user.
215 NAME system type. Where NAME is an official system name from the list in the Assigned Numbers document.
220 Service ready for new user.
221 Service closing control connection. Logged out if appropriate.
225 Data connection open; no transfer in progress.
226 Closing data connection. Requested file action successful (for example, file transfer or file abort).
227 Entering Passive Mode (h1,h2,h3,h4,p1,p2).
230 User logged in, proceed.
250 Requested file action okay, completed.
257 “PATHNAME” created.
331 User name okay, need password.
332 Need account for login.
350 Requested file action pending further information.
421 Too many users logged to the same account
425 Can’t open data connection.
426 Connection closed; transfer aborted.
450 Requested file action not taken. File unavailable (e.g., file busy).
451 Requested action aborted: local error in processing.
452 Requested action not taken. Insufficient storage space in system.
500 Syntax error, command unrecognized. This may include errors such as command line too long.
501 Syntax error in parameters or arguments.
502 Command not implemented.
503 Bad sequence of commands.
504 Command not implemented for that parameter.
530 Not logged in.
532 Need account for storing files.
550 Requested action not taken. File unavailable (e.g., file not found, no access).
551 Requested action aborted: page type unknown.
552 Requested file action aborted. Exceeded storage allocation (for current directory or dataset).
553 Requested action not taken. File name not allowed.
Active FTP vs. Passive FTP, a Definitive Explanation
Introduction
One of the most commonly seen questions when dealing with firewalls and other Internet connectivity issues is the difference between active and passive FTP and how best to support either or both of them. Hopefully the following text will help to clear up some of the confusion over how to support FTP in a firewalled environment.
This may not be the definitive explanation, as the title claims, however, I’ve heard enough good feedback and seen this document linked in enough places to know that quite a few people have found it to be useful. I am always looking for ways to improve things though, and if you find something that is not quite clear or needs more explanation, please let me know! Recent additions to this document include the examples of both active and passive command line FTP sessions. These session examples should help make things a bit clearer. They also provide a nice picture into what goes on behind the scenes during an FTP session. Now, on to the information…
The Basics
FTP is a TCP based service exclusively. There is no UDP component to FTP. FTP is an unusual service in that it utilizes two ports, a ‘data’ port and a ‘command’ port (also known as the control port). Traditionally these are port 21 for the command port and port 20 for the data port. The confusion begins however, when we find that depending on the mode, the data port is not always on port 20.
Active FTP
In active mode FTP the client connects from a random unprivileged port (N > 1024) to the FTP server’s command port, port 21. Then, the client starts listening to port N+1 and sends the FTP command PORT N+1 to the FTP server. The server will then connect back to the client’s specified data port from its local data port, which is port 20.
From the server-side firewall’s standpoint, to support active mode FTP the following communication channels need to be opened:
FTP server’s port 21 from anywhere (Client initiates connection)
FTP server’s port 21 to ports > 1024 (Server responds to client’s control port)
FTP server’s port 20 to ports > 1024 (Server initiates data connection to client’s data port)
FTP server’s port 20 from ports > 1024 (Client sends ACKs to server’s data port)
In step 1, the client’s command port contacts the server’s command port and sends the command PORT 1027. The server then sends an ACK back to the client’s command port in step 2. In step 3 the server initiates a connection on its local data port to the data port the client specified earlier. Finally, the client sends an ACK back as shown in step 4.
The main problem with active mode FTP actually falls on the client side. The FTP client doesn’t make the actual connection to the data port of the server–it simply tells the server what port it is listening on and the server connects back to the specified port on the client. From the client side firewall this appears to be an outside system initiating a connection to an internal client–something that is usually blocked.
Active FTP Example
Below is an actual example of an active FTP session. The only things that have been changed are the server names, IP addresses, and user names. In this example an FTP session is initiated from testbox1.slacksite.com (192.168.150.80), a linux box running the standard FTP command line client, to testbox2.slacksite.com (192.168.150.90), a linux box running ProFTPd 1.2.2RC2. The debugging (-d) flag is used with the FTP client to show what is going on behind the scenes. Everything in red is the debugging output which shows the actual FTP commands being sent to the server and the responses generated from those commands. Normal server output is shown in black, and user input is in bold.
There are a few interesting things to consider about this dialog. Notice that when the PORT command is issued, it specifies a port on the client (192.168.150.80) system, rather than the server. We will see the opposite behavior when we use passive FTP. While we are on the subject, a quick note about the format of the PORT command. As you can see in the example below it is formatted as a series of six numbers separated by commas. The first four octets are the IP address while the second two octets comprise the port that will be used for the data connection. To find the actual port multiply the fifth octet by 256 and then add the sixth octet to the total. Thus in the example below the port number is ( (14*256) + 178), or 3762. A quick check with netstat should confirm this information.
testbox1: {/home/p-t/slacker/public_html} % ftp -d testbox2
Connected to testbox2.slacksite.com.
220 testbox2.slacksite.com FTP server ready.
Name (testbox2:slacker): slacker
—> USER slacker
331 Password required for slacker.
Password: TmpPass
—> PASS XXXX
230 User slacker logged in.
—> SYST
215 UNIX Type: L8
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> ls
ftp: setsockopt (ignored): Permission denied
—> PORT 192,168,150,80,14,178
200 PORT command successful.
—> LIST
150 Opening ASCII mode data connection for file list.
drwx—— 3 slacker users 104 Jul 27 01:45 public_html
226 Transfer complete.
ftp> quit
—> QUIT
221 Goodbye.
Passive FTP
In order to resolve the issue of the server initiating the connection to the client a different method for FTP connections was developed. This was known as passive mode, or PASV, after the command used by the client to tell the server it is in passive mode.
In passive mode FTP the client initiates both connections to the server, solving the problem of firewalls filtering the incoming data port connection to the client from the server. When opening an FTP connection, the client opens two random unprivileged ports locally (N > 1024 and N+1). The first port contacts the server on port 21, but instead of then issuing a PORT command and allowing the server to connect back to its data port, the client will issue the PASV command. The result of this is that the server then opens a random unprivileged port (P > 1024) and sends the PORT P command back to the client. The client then initiates the connection from port N+1 to port P on the server to transfer data.
From the server-side firewall’s standpoint, to support passive mode FTP the following communication channels need to be opened:
FTP server’s port 21 from anywhere (Client initiates connection)
FTP server’s port 21 to ports > 1024 (Server responds to client’s control port)
FTP server’s ports > 1024 from anywhere (Client initiates data connection to random port specified by server)
FTP server’s ports > 1024 to remote ports > 1024 (Server sends ACKs (and data) to client’s data port)
In step 1, the client contacts the server on the command port and issues the PASV command. The server then replies in step 2 with PORT 2024, telling the client which port it is listening to for the data connection. In step 3 the client then initiates the data connection from its data port to the specified server data port. Finally, the server sends back an ACK in step 4 to the client’s data port.
While passive mode FTP solves many of the problems from the client side, it opens up a whole range of problems on the server side. The biggest issue is the need to allow any remote connection to high numbered ports on the server. Fortunately, many FTP daemons, including the popular WU-FTPD allow the administrator to specify a range of ports which the FTP server will use. See Appendix 1 for more information.
The second issue involves supporting and troubleshooting clients which do (or do not) support passive mode. As an example, the command line FTP utility provided with Solaris does not support passive mode, necessitating a third-party FTP client, such as ncftp.
With the massive popularity of the World Wide Web, many people prefer to use their web browser as an FTP client. Most browsers only support passive mode when accessing ftp:// URLs. This can either be good or bad depending on what the servers and firewalls are configured to support.
Passive FTP Example
Below is an actual example of a passive FTP session. The only things that have been changed are the server names, IP addresses, and user names. In this example an FTP session is initiated from testbox1.slacksite.com (192.168.150.80), a linux box running the standard FTP command line client, to testbox2.slacksite.com (192.168.150.90), a linux box running ProFTPd 1.2.2RC2. The debugging (-d) flag is used with the FTP client to show what is going on behind the scenes. Everything in red is the debugging output which shows the actual FTP commands being sent to the server and the responses generated from those commands. Normal server output is shown in black, and user input is in bold.
Notice the difference in the PORT command in this example as opposed to the active FTP example. Here, we see a port being opened on the server (192.168.150.90) system, rather than the client. See the discussion about the format of the PORT command above, in the Active FTP Example section.
testbox1: {/home/p-t/slacker/public_html} % ftp -d testbox2
Connected to testbox2.slacksite.com.
220 testbox2.slacksite.com FTP server ready.
Name (testbox2:slacker): slacker
—> USER slacker
331 Password required for slacker.
Password: TmpPass
—> PASS XXXX
230 User slacker logged in.
—> SYST
215 UNIX Type: L8
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> passive
Passive mode on.
ftp> ls
ftp: setsockopt (ignored): Permission denied
—> PASV
227 Entering Passive Mode (192,168,150,90,195,149).
—> LIST
150 Opening ASCII mode data connection for file list
drwx—— 3 slacker users 104 Jul 27 01:45 public_html
226 Transfer complete.
ftp> quit
—> QUIT
221 Goodbye.
Summary
The following chart should help admins remember how each FTP mode works:
Active FTP :
command : client >1024 -> server 21
data : client >1024 <- server 20
Passive FTP :
command : client >1024 -> server 21
data : client >1024 -> server >1024
A quick summary of the pros and cons of active vs. passive FTP is also in order:
Active FTP is beneficial to the FTP server admin, but detrimental to the client side admin. The FTP server attempts to make connections to random high ports on the client, which would almost certainly be blocked by a firewall on the client side. Passive FTP is beneficial to the client, but detrimental to the FTP server admin. The client will make both connections to the server, but one of them will be to a random high port, which would almost certainly be blocked by a firewall on the server side.
Luckily, there is somewhat of a compromise. Since admins running FTP servers will need to make their servers accessible to the greatest number of clients, they will almost certainly need to support passive FTP. The exposure of high level ports on the server can be minimized by specifying a limited port range for the FTP server to use. Thus, everything except for this range of ports can be firewalled on the server side. While this doesn’t eliminate all risk to the server, it decreases it tremendously.
About the Author
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RC Helicopter Flies Over Santa Cruz Boardwalk
Took a little vacation to the beach in Northern California the last weekend. Shot a little video form on-board my Trex 450 clone RC helicopter. Used my flycamone2. Not the best video quality but good enough to give you a little view from above. Visit www.mikeysrc.com For more FREE RC helicopter infor and how to videos and also FREE PRDF plans that you can use to make RC plane fuselages for only $10!! Do you want a helicopter like the one used in this video? Go here and buy one for a really good deal. www.mikeysrc.com OR Click BELOW if you already have your own Transmitter and receiver. www.mikeysrc.com Thanks! Will Music: freeformprg002echoofsurf This song is part of the “Ourmedia” collection.
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Decision on what type of RC Helicopter to buy depend on you. But with a more reflective mind. Practice doing left / right turns in front of you while flying your RC Helicopter back and forth. Almost like a figure-8 but always keeping the RC Helicopter tail in a little. Basically just fly the RC Helicopter sideways to the left and right in front of you then start adding rudder so instead of flying sideways back and forth. The Bumblebee RC Helicopter is so small and hard wearing (G10 materials) meaning you will hardly ever have to buy spares reducing your costs!. Xheli has 2/ 3/ 4. The electric RC Helicopter is also much cheaper than the next type of RC Helicopter: the gas RC Helicopter.
Ok. Practice doing left / right turns in front of you while flying your RC Helicopter back and forth. Almost like a figure-8 but always keeping the RC Helicopter tail in a little. Basically just fly the RC Helicopter sideways to the left and right in front of you then start adding rudder so instead of flying sideways back and forth. Wind conditions; the bigger the helicopter the more wind it can cope with. Xheli has 2/ 3/ 4. See remote controlled coast guard helicopters.
Model RC RC Helicopters engine fuel (glow fuel) produces more power than conventional gasoline because of the high contests of nitro methane which is why it is more popular than gasoline for model aircraft. Practice in a little more wind… wind really makes a 30 size jump around be on top of it! Practice controlled flight. Try to make the RC Helicopter go exactly where you want it to. Wind conditions; the bigger the helicopter the more wind it can cope with.
if you are careful. Extremely careful. I put the blade holders on upside down but it seems to fly ok with them that way. When I get some extra money I’ll buy new wood blades. http://www.rchelicopterexpert.info/helicopter-rtf/rc-helicopters-south-florida.php In other words after you have bought and first flown your radio-controlled helicopter you might not be able to fly it again.
When flying on your own with the use of homemade and “ingenious” constructions are discussed it is not surprising if some would react with a laugh. The fact is.Do not overreact and slam your RC helicopter into the ground. Slowly lower the collective and gradually bring it back. Be prepared for the wind to stop and the helicopter to descend more quickly. I think that the experience building your first RC Helicopter is extremely valuable. Especially after your first crash which will happen. Also.
Do not overreact and slam your RC helicopter into the ground. Slowly lower the collective and gradually bring it back. Be prepared for the wind to stop and the helicopter to descend more quickly. Also see air hoag remote control helicopters. From kids and kids at heart collecting model RC Helicopter has become one of the more popular hobbies. I think RC Helicopter simulator teaches you coordination very well. It teaches some bad habits maybe.
About the Author
Frederick is an expert in best rated electric rc rtf helicopter for over
20 years. More sources at http://www.rchelicoptertips.info/remote-control-helicopters/giant-scale-radio-control-helicopters.php
Agusta US Coast Guard A109E Fuselage RC Helicopter
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