I use an old laptop without USB controller and onboard LAN to capture some packets. I captured about 30Mb of data, but the laptop was just too slow to crack the captured data. So I thought easy, I send the data via serial line… I guess I was wrong, because backtrack2 does not include a zmodem, xmodem or ymodem tool, only the ascii-xfr.
I found on this website, which contains a zmodem source. I downloaded it and copied via floppy (yeah!) to the laptop. Backtrack2 includes also the gcc toolchain, so it was easy to build the binaries.
The next Step was fireing up Minicom and change the protocol settings (configure Minicom / File transfer protocols, U use: ./lrz -vv -b as parameter). On the Windows Client start Hyperterm and receive the file – end of story!