We have a cisco asa here and we are having issues ftp'ing from one site.

We can download from other sites without issue, just not one. When we
try from this one, the file downloads until the last few bytes, then
the ftp session times out and the file is 'corrupt'. Doesn't matter
how big or small the file is.

If we download via ftp from this site on a connection not behind our
asa, things download fine.

Any suggestions on what to check?