| FTP Filtering | |
- Problem is to allow ftp from local client.
- In establising connection from local client, no problem as connection is from
local to remote. (The remote server may block your connection though.)
- In data transfer, remote server must open data channel to your client.
This may get blocked by ACK bit unset at client end.
- Resolve this by forcing client to initiate data transfer
on a new port, not client
Slide 37 | ©Copyright 1997 | Jan Newmarch |