ftp firewalling
Hi,
Sorry if this is off-the-topic.
I am trying to set up a firewall on our network, but to allow ftp
connections from internal machines to specific external sites (on a
per-site basis). The problem I am having is that ftp seems to use ports
other than 20 and 21.
At the moment I only allow transfers on these two ports. This allows me
to make an ftp connection (ie. the external site prompts for username
password, and I can enter those) but when I try to do any transfers (ie
gets, puts, or lists) they just time out.
Can anybody give me a bit more info on how ftp works?
Chris
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