Strange (newbie) Gateway Errors

[Thomas Dimson]

Sorry, I should have clarified. I do have that option enabled.

In fact, my machine works perfectly as a gateway to the internet - it just 
fails to forward (or much more likely, recieve) packets from an intranet and 
send it to the machine.

On 9/10/05, Leonidas Tsampros <ltsampros at upnet.gr> wrote:
> 
> On Fri, Sep 09, 2005 at 08:58:41PM -0400, Thomas Dimson wrote:
> > Hi,
> >
> > Sorry if this is out of place, but I am having an issue with forwarding
> > packets on my freebsd-current box from a windows PC.
> >
> > Here what I'm trying to do:
> > I have two network cards, one on a university network and one going to a
> > router, which is connected to a cable modem. Both cards use the vr 
> driver.
> > University is configured through DHCP, private router is just specified 
> (
> > 192.168.1.110 <http://192.168.1.110> <http://192.168.1.110>). I am 
> trying to route traffic to the
> > internet through the router while keeping all university traffic 
> internal.
> >
> > Problem:
> > I run a traceroute from my freebsd box to the university network and it
> > works fine. I can access the website (129.97.128.40<http://129.97.128.40><
> http://129.97.128.40>)
> > through the internal network. However, using my windows PC - with the
> > freebsd server specified as a gateway - it just times out when trying to
> > connect to the web site. Any website on the internet works fine, but not 
> the
> > intranet.
> >
> > Here is my config, I am just setting a static route to the ip of the 
> website
> > to test for now:
> > netstat -r
> > Routing tables
> >
> > Internet:
> > Destination Gateway Flags Refs Use Netif Expire
> > default 192.168.1.1 <http://192.168.1.1> <http://192.168.1.1> UGS 0 
> 119789 vr0
> > localhost localhost UH 0 0 lo0
> > 129.97.128.40/32 <http://129.97.128.40/32> <http://129.97.128.40/32> 
> cn-rtrev-res15net. UGS 0 12 vr1
> > 192.168.1 link#1 UC 0 0 vr0
> > 192.168.1.1 <http://192.168.1.1> <http://192.168.1.1> 00:20:78:ce:cb:b4 
> UHLW 2 154 vr0 1172
> > 192.168.1.107 <http://192.168.1.107> <http://192.168.1.107> 
> 00:11:95:5d:0b:7f UHLW 1 210110 vr0 945
> >
> > Internet6:
> > Destination Gateway Flags Netif Expire
> > localhost localhost UH lo0
> > fe80::%vr0 link#1 UC vr0
> > fe80::20d:88ff:fe7 00:0d:88:7f:42:d0 UHL lo0
> > fe80::%vr1 link#2 UC vr1
> > fe80::211:95ff:fee 00:11:95:e2:57:40 UHL lo0
> > fe80::%lo0 fe80::1%lo0 U lo0
> > fe80::1%lo0 link#4 UHL lo0
> > ff01:: localhost U lo0
> > ff02::%vr0 link#1 UC vr0
> > ff02::%vr1 link#2 UC vr1
> > ff02::%lo0 localhost UC lo0
> >
> > Can anyone provide me with aid, or at least the location of a log file 
> for
> > the gateway functions of the machine?
> 
> Try to add gateway_enable="YES" in /etc/rc.conf and run either
> 
> # /etc/routing start [as root]
> 
> or reboot the pc.
> 
> Actually , when you want your freebsd to act as a gateway , you have
> to set the sysctl variable net.inet.ip.forwarding to 1. However , the
> gateway_enable options takes care of this.
> 
> 
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