Hello Everybody,
I've got a question which is a little involved but hopefully not too much. I'm something of a newbie at firewall setup but have got a question which is hopefully relatively simple.
Problem : We're looking to have a small group of win2k users who would like to FTP directly from their workstations to a Fedex Server on the internet (directlink) [personally I'm not crazy about allowing passive ftp through our pix but the users pay the bills.
Our network is laid out with the users going through a legacy netmax Prosuite proxy for HTTP proxy traffic.
I'm trying to enable passive FTP for our clients but I'm running into the following issue.
The netmax/proxy is behind a pix 515.
I've been working with the netmax folks who basically have provided some simple rules for (essentially a thinly masked version of
IPtables) which seem like they "should work" but our PIX allows only for only http (port 80) and https (port 443) traffic
part of the pix 515 instructions which seem applicable are
25.30.15.* address of sub-domain to world
25.30.15.55 - address of our netmax server to world.
fixup protocol 21
fixup protocol 80
fixup protocol 25
fixup protocol 443
access-list inbound permit tcp any 25.30.15.0 255.255.255.0 eq 80
access-list inbound permit tcp any 25.30.15.0 255.255.255.0 eq 443
But I believe that I need to open up many ports (read 20,21 and >1024) on the ip address where our netmax attaches directly to the pix.
I'm thinking that something like this might work to allow the netmax to work (if it's going to work at all) I'm thinking I need to open ports 20 & 21 and also allow most - if not all ports above 1024 - I'd be relying on the netmax to handle bad traffic above 1024 and I'm certain some exclusions could be included in here but basically I'm curious if this is it.
access-list inbound permit tcp any host 25.30.15.55 eq 20:21
access-list inbound permit tcp any host 25.30.15.55 eq 1024:65535
Please let me know if I need to provide more information or if anyone has had the distinction of doing this sort of thing in the past, any help would be greatly appreciated.
Thanks,
Joe G.
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