ICQ file transfer problem?

[rajak]

Our CMTS is 7246 VXR and differnet cable modems and the CMTS is connected to Cisco 7200 router which is connected to the internet where we run NAT for the hosts behind Cable Modem.

Now the problem is our customer can send files but we couldnt recieve files, since the ICQ needs a direct host to host connection for the file transfer.

Thanks in advance,

Raja

[shabib.syed]

i have PIX 515 ...5.2(3) using access-list , i m having same problem for internal users gett'n disconnecting after some time.........with ne internet messag'n service...is this has to do neth'n with implicit deny with access-list......since all these instant messag'n services use high ports.......the access-list effect this....is there ne way without mak'n ne major security holes to take care of this problem.