IPFW question

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From
Gavin Cameron <gavin@itworks.com.au>
Date
19 Mar 2000 02:03:48
Subject
IPFW question
Message-ID
Pine.BSF.4.21.0003192056280.11948-100000@maybe.itworks.com.au


[ Hide this part ]
Hi all,

I have the following turned in my kernel on under 4.0-RELEASE

options IPFIREWALL #firewall
options IPFIREWALL_VERBOSE #print information about
# dropped packets
options IPFIREWALL_FORWARD #enable transparent proxy support
options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity
options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by
default
options IPDIVERT #divert sockets
options IPSTEALTH #support for stealth forwarding

And if I do the following

ipfw add 100 divert 23 log tcp from mach1 to mach2 80

Then I think that if I telnet from mach1 to mach2 on port 80 then I expect
to see a telnet session start up.

Am I right in the way that I read the divert line?

I get lines like

Mar 19 20:57:50 gavin1 /kernel: ipfw: 100 Divert 23 TCP
mach1:1625 mach2:80 in via ed0

in my IPFW logfiles but I don't see a telnet session.

The test is a precursor to getting FreeBSD 4.0 working with squid 2.3 to
act as a transparent proxy for packets directed to it by an Alteon
CacheDirector. If someone already have a working config (both IPFW and
squid) for this scenario and wouldn't mind parting with it I'd be very
appreciative.

Cheers and thanks,
Gavin

[]-----------------------------------+------------------------------------[]
| Gavin Cameron | ITworks Consulting |
| Ph : +61 3 9642 5477 | Level 8, 488 Bourke Street |
| Fax : +61 3 9642 5499 | Melbourne, Victoria |
| Email : gavin@itworks.com.au | Australia, 3000 |
[]-----------------------------------+------------------------------------[]



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