FTP Server trouble with Linksys router

[Trent257]

alright i've been trying to setup a ftp server, i followed this quild exactly
http://pctechforums.com/modules.php?name=FTP

and still no luck. i scanned my ports using this scanner
https://www.grc.com/x/ne.dll?bh0bkyd2
and it says port 21 is in stealth and 6999 and 7000 are not open
i think this is what is causing my probalem, how do i go about opening up those ports?

 

[Trent257]

bump

 

[bluestrobe]

You'll have to setup the DMZ on your router to the ftp server. Other than fine tweaking that is hard to do with standard routers, I never been able to run an FTP serve behind a consumer router.

edit: I should have explained why. Some FTP server programs send lists at random high ports so opening the standard port 21 will only give them access but the inability to obtain lists of the directories on the server.

 

[deftek]

In a nutshell....Generally for an FTP server, two well known ports are used, port 20 for data transfer and port 21 for the control process. When the FTP server issues a passive open it typically can specify the port used on the client machine and the local server port, (typically port 21 on the server, this is a control process connection). The client control process obtains a local random port to be used in the file transfer process, (data transfer) and communicates that random port number to the FTP server, over the control connection, (i.e. on the FTP server it is port 21, typically). Then the FTP server establishes a data transfer process, accepting a connection from the client. A data transfer process then starts on the client machine in order to establish the data connection. So basically, FTP uses the control connection to allow the client and server control processes, coordination of the use of dynamically assigned TCP protocol ports and the creation of a data transfer process that uses those ports.

Tony

 

[duragezic]

Yeah wtf I never could get an FTP working outside my network since I've been behind a Linksys router. I tried Serv-U and Bulletproof, and I've set them up no problem in the past.

 

[duragezic]

Does anyone know how to with a Linksys 802.11b router? I'm wired in too. I couldn't get it to work at all at a custom port, but my roommate was able to login in locally at port 21.

 

[myusername]

Um.. what are you guys using for an FTP client - are you sure you set passive mode? (IE has 2 settings that need to be changed in advanced options if you are using it to (FTP)

Edit: I can't tell you how to open 20/21 and whatever data ports you choose because I don't have a linksys, but in addition to disabling any firewalling on those ports, you will probably also have to manually add a NAT table