Equipment Support > Hardware By Brand > Linksys > ICQ File Transfer and BEFSR41

ICQ File Transfer and BEFSR41

To setup the router to allow file transfers w/ ICQ is rather simple. There is no need to use the DMZ.

First, determine which version of ICQ you are using.
Whether 99a/b or 2000a/b.
Second, determine which firmware version you have in the Linksys router.

If you have a newer firmware such as 1.38.5 or above, preferably 1.39, you can use port triggering on the port forwarding setup page.
Otherwise, you will have to use port forwarding.

The advantage of port triggering is, the incoming ports are only open when they are triggered by a specified outgoing port.. Instead of being forwarded all the time.

For ICQ 99a/b, the outgoing trigger port would be 4000
For ICQ 2000a/b, the outgoing trigger port would be 5190

Now, you must determine which ports you want to forward.
Typically, you need at least 5 to 10 ports per user for ICQ direct connections and file transfers... If you want to send and receive files from multiple users at the same time, you will need a larger range of ports.

Pick a range of ports that are uncommon and rarely used.
For example:
50000-50099
This should be enough ports to make ICQ happy.

Your port triggering rule should be as follows:

For 99a/b
[ICQ] 4000-4000 50000-50099

For 2000a/b
[ICQ] 5190-5190 50000-50099

Now you must configure ICQ to use those specific ports.
In ICQ...
ICQ button > Preferences > Connections

Server Tab:
Using firewall, not using proxy

User Tab:
Not using proxy
Use following TCP ports for incoming events
50000-50099.
[text was edited by author 2001-09-28 13:21:36]

reply to Anon
Finally, my $#!+ works. Thanks frosty!

reply to Anon
im using icq 99b and when i try to configure icq for ports 50000 50099 it gives me a error saying

reply to Anon
sorry i forgot the rest of my message it says

the field from port is out of range (0-32767)

reply to Anon

Re: ICQ File Transfer and

reply to Anon

Re: ICQ File Transfer and BEFSR41

Correct, ICQ 99a/b can't use the high ports above 32767.
ICQ 2000a/b and 2001 can...

My mistake on the post above where I stated ICQ 99a/b could use 50000-50099..

[text was edited by author 2001-11-29 12:31:00]

I am just a newbie at networking so I decided to look up some help and found your solution for this certain situation. I'm using a LinkSYS router and have DCHP server enabled and used the port trigger option for ICQ. I have followed your instruction but I still can't send...any suggestions?

um...you dont have to use port fowarding or port trig for icq to send or receive files. Just set up icq right.