gray network and ipfw2
Alexander Motin
mav at alkar.net
Tue Dec 30 02:20:23 PST 2003
al vanyushenkov wrote:
> hi all
> i have freebsd 4.8 installed and i use ipfw2 with the rules
> #!/bin/sh
> ipfw='/sbin/ipfw'
> $ipfw -f flush
>
> $ipfw add divert natd all from any to any via ppp0
> $ipfw add allow log all from any to any
^^^^^ this rule matches packets on all innterfaces. Internal too. On
internal interface you really have grey addresses.
>
> my local ethernet card has 192.168.133.7 ip address
> and my ppp0 interface has 217.15.x.x ip address.
>
> when i tried to connect to 195.54.192.44:21 from my local box i got the lines
>
> Accept TCP 172.16.202.106:4802 195.54.192.44:21 out via ppp0
> Accept TCP 195.54.192.44:21 172.16.202.106:4802 in via ppp0
> and so on.
>
> as i know 172.16.0.0 are gray addresses and i haven't got any 172.16.x.x networks
> in my environment.
> Could anybody tell me what 172.16.202.106:4802 does in my log file.
--
Alexander Motin mav at alkar.net
ISP "Alkar-Teleport"
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