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At 10:20 2/18/2004, Jim Franz wrote:
A trading partner wants to use ftp to get a daily file off our ifs, but
is adamently refusing to specify a single ip they are coming from,
saying that is a security risk to them, and has given us 3
ranges totalling over 700 addresses. I don't have a problem
but our firewall person is freaked and refuses. I assume they
have a herd of routers and servers in their farm.
note: partner is defense related. 400 has decent ftp exit control.
should i worry?

FTP is clear text. You might want to look at SFTP, which I just noticed yesterday, appears to be supported on the iSeries at V5R2. It also comes standard with Linux. We have a similar need, although all of our file transfers are initiated locally. We felt it was imprudent to expose ANY production server to the Internet. We are in the process of setting up a Linux box in the DMZ that will be minimally visible to the outside world, and communicate with it via SFTP. It will support FTP access from inside the local network only, and then only from specific internal hosts. It doesn't even have a telnet server (secure shell only). It doesn't allow remote commands either, which is sort of a pain, but can be dealt with using marker file logic and cron to initiate jobs. Defensive programming used to have a whole different meaning.


Pete Hall
pbhall@xxxxxxxxxxxxx
http://www.pbhall.us/


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