more transparent proxy and squid questions.

[Andrew Thomson]

further, if i do try and configure with the --enable-ipfw-transparent
option, configure complains with the following:

checking if setresuid is implemented... yes
checking if IP-Filter header files are installed... no
WARNING: Cannot find necessary IP-Filter header files
         Transparent Proxy support WILL NOT be enabled

I appreciate it's talking about ipfilter however I use ipfw which is
compiled into the kernel.

I want transparent proxy but with ipfw..

what's the status?

ajt.

On Mon, Jun 16, 2003 at 04:52:12PM +1000, Andrew Thomson wrote:
> i'm still having issues here..
> 
> has anyone else got transparent proxy going with firewall and squid on
> different boxes??
> 
> anyway, from the squid faq, does this apply to freebsd these days??
> 
> ..."Compile and run a version of Squid which accepts connections for other
> addresses. For some operating systems, you need to have configured and
> built a version of Squid which can recognize the hijacked connections
> and discern the destination addresses. For Linux this seems to work
> automatically. For *BSD-based systems, you probably have to configure
> squid with the --enable-ipf-transparent option. (Do a make clean if you
> previously configured without that option, or the correct settings may
> not be present.)"...
> 
> i'm trying to use ipfw for my fwd'ing from the firewall to the proxy
> server.
> 
> thanks,
> 
> ajt.
> 
> On Mon, Jun 16, 2003 at 07:25:26AM +0300, Rapier wrote:
> > 	From what you've said you have natd enabled,instead of redirecting with ipfw you shoud redirect with natd!man natd
> > 
> > 
> > On Mon, 16 Jun 2003 09:41:05 +1000
> > Andrew Thomson <ajthomson at optushome.com.au> wrote:
> > 
> > > On Fri, Jun 13, 2003 at 09:47:09AM -0400, Bill Moran wrote:
> > > > 
> > > > Yes.  You've got the right idea.
> > > > 
> > > 
> > > hmm.. i have encountered some difficulties ;) so now i'm seeking some
> > > more advice..
> > > 
> > > i have the following rules on my firewall:
> > > 
> > > 10561 skipto 11000 ip from 192.168.1.2 to any
> > > 10562 fwd 192.168.1.2,3128 tcp from 192.168.1.3 to any 80
> > > 
> > > keeping in line with my example, 1=fwall, 2=squid, 3=user
> > > 
> > > the skipto is in there so we go through nat and get a proper ip.
> > > 
> > > i never see any packets get to the squid box though..
> > > 
> > > ipfw show indicates matching packets
> > > ipfw show 10561 10562
> > > 10561       5342        331306 skipto 11000 ip from 192.168.1.2 to any
> > > 10562       2520        120960 fwd 192.168.1.2,3128 tcp from 192.168.1.3 to any 80
> > > 
> > > a tcpdump on the squid box looking out for port 3128 shows nothing, although
> > > the ipfw shows matches..
> > > 
> > > i'll keep digging around but any more tips would be appreciated on this
> > > setup.
> > > 
> > > thanks,
> > > 
> > > andrew.
> > > 
> > > 
> > > 
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