[gentoo-user] dhcpd and routes

[gentoo-user] dhcpd and routes

[Dave Oxley]

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I have a Gentoo server that is running Cisco VPN software to connect to
my companies VPN. I have setup the server as a NAT for the specific
subnet required for the VPN and the rest of my traffic goes through my
router (192.168.1.1). I currently have to manually run the following
command to setup the route:
route add -net 10.4.0.0 netmask 255.255.255.0 gw 192.168.1.200

On my Gentoo server I run dhcpd to allocate IP addresses for machines on
my LAN. The current configuration is:
subnet 192.168.1.0 netmask 255.255.255.0 {
  range 192.168.1.100 192.168.1.199;
  option routers 192.168.1.1;
}

So the question is how can I setup dhcpd to automatically setup the
route command for all clients using the dhcpd?

Cheers,
Dave.
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Re: [gentoo-user] dhcpd and routes

[Nick Rout]

On Wednesday 07 February 2007 01:20, Dave Oxley wrote:
> I have a Gentoo server that is running Cisco VPN software to connect to
> my companies VPN. I have setup the server as a NAT for the specific
> subnet required for the VPN and the rest of my traffic goes through my
> router (192.168.1.1). I currently have to manually run the following
> command to setup the route:
> route add -net 10.4.0.0 netmask 255.255.255.0 gw 192.168.1.200
>
> On my Gentoo server I run dhcpd to allocate IP addresses for machines on
> my LAN. The current configuration is:
> subnet 192.168.1.0 netmask 255.255.255.0 {
>   range 192.168.1.100 192.168.1.199;
>   option routers 192.168.1.1;
> }
>
> So the question is how can I setup dhcpd to automatically setup the
> route command for all clients using the dhcpd?
>
> Cheers,
> Dave.

You are suggesting that each client needs the route command. Not so, set it on 
the gateway. that way each client accessing the VPN will be routed via the 
gateway back to 192.168.1.200 and thnce to the VPN.
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Re: [gentoo-user] dhcpd and routes

[Dan Farrell]

On Tue, 06 Feb 2007 23:20:28 +1100
Dave Oxley <dave@daveoxley.co.uk> wrote:

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> Hash: SHA1
> 
> I have a Gentoo server that is running Cisco VPN software to connect
> to my companies VPN. I have setup the server as a NAT for the specific
> subnet required for the VPN and the rest of my traffic goes through my
> router (192.168.1.1). I currently have to manually run the following
> command to setup the route:
> route add -net 10.4.0.0 netmask 255.255.255.0 gw 192.168.1.200
> 
> On my Gentoo server I run dhcpd to allocate IP addresses for machines
> on my LAN. The current configuration is:
> subnet 192.168.1.0 netmask 255.255.255.0 {
>   range 192.168.1.100 192.168.1.199;
>   option routers 192.168.1.1;
> }
> 
> So the question is how can I setup dhcpd to automatically setup the
> route command for all clients using the dhcpd?

You will need a subnet declaration as such for each subnet on the
network.  For example, something like

subnet 10.4.0.0 netmask 255.255.255.0 {
	option routers 192.168.1.200;
}

might be appropriate.  Without the range statement, you won't actually
offer DHCP addresses on the network, but the routing information should
be forwarded to the DHCP clients you are servicing on 192.168.1/24.  

Good luck.  DHCPd is neat ; )
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