zmodem - what type of protocol is it..? layer 3 or layer 4 ? more...
Posted on 2001-06-06
is zmodem (zmtx/zmrx) a layer 3 (like tcp/udp) or layer 4 protocol (like ftp?).. I am running a server with no telnet and only SSH2 access, and we use zmodem to transfer files to and fro our local PCs. I would like to know what type of protocol is it and how it relates to firewall rules / port numbers...
does zmodem tunnel through SSH in this case?