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Opening TCP/IP Port In Win2000

S

SmartPCUSA

Junior Member
Hey fella's, what's up. Anywho, I run an FTP server at my house so I can download all the drivers and apps I need from where I work. But since my ISP checks port 21 (Not allowed to run servers), I've set it to run on port 420. Now this is normally not a problem, but I also run a little home network and use the ICS feature to share my DSL. Now when ever I connect to my FTP from work, it connects and log's in, but you see nothing. I had this same problem back when I was running Win98SE, and it was pretty simple. I downloaded a little app called ICS Config, and there is a section where you can tell ICS which ports to 'open' or allow traffic. Now I tried using this app in Win2000, but it's a no go, and I can't find any other one's that will work. I've tried checking out www.practicallynetworked.com, but it's not coming up on my side. Anywho, I was wondering if any of you Win2000 guru's knew how to do this...thanx in advance!
 
complicated : no -> War. Setting up this daemon is a piece of cake. I'm not sure what are the changes in v2 (last one I used was 1.66, but that was when i was in college....i also wrote bunch of addons for the damn thing (log parsers, auto motd posters, etc)
 
Just a vague idea, more of an educated guess than anything else; But have you tried putting your FTP client into PASV mode?
 
Hey there..

well, to start diagnosing this, you might be able to make use of a sniffer & some remote control software. The NetMon utility that's part of Win2k will let you sniff the packets to/from the machine it's running on, so you could use it to watch the connection as it's opened. It might be better to use a phone + friend rather than remote control so those packets don't confuse things...

Anyway, you might also be aware that FTP only initiates the connection on port 21 (or 420 in your case), but this first connection helps negotiate a connection on another port for actual data transfers, including the first directory listing you'd expect to see. This second port is, I believe, random within a certain range. If your ISP is simply blocking ports, they may have the whole range blocked which would probably cause what you're describing.

Another possibility is that their firewall/filter that's restricting these ports is doing so on a protocol level rather than a port level. While typically more taxing, this would allow them to block FTP transfers regardless of what port you're using.

Hopefull that'll help!

-Chris
Web/Database Admin, Beckett.com
 
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