Trouble configuring network gateway
jfm at blueyonder.co.uk
Sun Apr 13 09:04:45 PDT 2003
John C <johnc909 at comcast.net> wrote:
>I am attempting to turn a PC into a gateway/firewall for my home network.
>My ISP is Comcast ... So whatever ramifications therein, for better or
>worse, apply to my predicament ...
I don't know anything about Comcast, so my comments may not be helpful.
>I've gotten both interfaces up and working, but I can't seem to get it to
>switch packets from within the subnet out into the internet. The kernel is
>pretty much GENERIC 4.7, except with the GATEWAY option set, plus with
<snipped network description>
On a pc gateway/firewall running 4.8 I can find nothing about
'GATEWAY' option in GENERIC or LINT.
sysctl -a | grep bridge
sysctl: unknown oid 'net.link.ether.bridge'
Seems you are trying to make a bridge, which probably isn't what you want.
Set it back to 0. The bridge stuff enabled in the kernel shouldn't matter.
AFAIK all you need is the following in /etc/rc.conf
gateway_enable=YES # Set to YES if this host will be a gateway
"This option will set the sysctl(8) variable net.inet.ip.forwarding to 1."
from section 19.2.4 of the Handbook: Building a Router
Also, you'll need NAT if there will be more than one machine behind the
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