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David
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 Posted: Thu Aug 12, 2004 10:24 pm Post subject: need help - writing a proxy / router |
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machine "A" wants to talk to internet site "1", "2", or "3" on port 21 (for
example)
but I want to keep track of source/dest ip, ports, and data/packet counts,
and block the connection at certain times.
ideally, i want machine "A" to route via my gateway machine "B" which
forwards the traffic onto the correct ip
machine "B" has 2 network cards if that's important
example
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site1.com:21
machine "B" keeps track of source/dest ips/ports, data length and
packetcounts
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site2.com:21
machine "B" keeps track of source/dest ips/ports, data length and
packetcounts
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site3.com:21
machine "B" does not forward the connection because it is outside of set
hours
I am using Delphi, and need to write this application so I can block
connections at certain hours.
Any help poiting me in the right direction would be greatly appreciated
David
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Kris Leech
Guest
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| Posted: Fri Aug 13, 2004 9:40 am Post subject: Re: need help - writing a proxy / router |
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You might want to check out WinPKfilter.
It is a low level hook for ethernet packets (which contain IP/ARP
packets, which contain TCP (or other) packets etc etc.)
Kris.
David wrote:
| Quote: | machine "A" wants to talk to internet site "1", "2", or "3" on port 21 (for
example)
but I want to keep track of source/dest ip, ports, and data/packet counts,
and block the connection at certain times.
ideally, i want machine "A" to route via my gateway machine "B" which
forwards the traffic onto the correct ip
machine "B" has 2 network cards if that's important
example
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site1.com:21
machine "B" keeps track of source/dest ips/ports, data length and
packetcounts
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site2.com:21
machine "B" keeps track of source/dest ips/ports, data length and
packetcounts
machine "B" listening on port 21, gets a connection from machine "A" to talk
to site3.com:21
machine "B" does not forward the connection because it is outside of set
hours
I am using Delphi, and need to write this application so I can block
connections at certain hours.
Any help poiting me in the right direction would be greatly appreciated
David
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