07-06-2013 05:54 AM
Hello
I have i Cisco 1841 router, also used as dhcp server
In my inside network I have an Endian firewall just to terminate an ipsec site to site tunnel to remote location.
Local network: 172.17.80.0
1841 inside/default gateway 172.17.80.1
Endian 172.17.80.2
Remote network: 192.168.16.0
I want traffic to remote network to go through Endian withou having to add static routes on each client as I have to now
Is this something the dhcp server handles, giving routes to the client.
Or should the router take care of this
This is problaby basic network knowledge I should now:)
I have a static route on the 1841 but that doesnt seems to do anything.
Regards
kritro
07-08-2013 07:56 PM
IPSEC VPNs can be route-based or policy-based .
If you're using route-based you must use some kind of routing, either static or dynamic routes, to decide what traffic goes to the tunnel.
If you're using policy-based then your router ACLs will decide what traffic goes to the ipsec tunnel
Could you please share your configuration ?
07-11-2013 12:30 AM
I managed to solve it.
At first it didnt work so I had the dhcp server send the routes to the clients, and that worked. But thats not ideal since I have clients/servers with static ip adress.
What I did whas to add option 121 and 249 to the dhcp server
ip dhcp pool 172.17.80.0/24
network 172.17.80.0 255.255.255.0
default-router 172.17.80.1
dns-server 172.17.80.30
option 121 ip 24.192.168.126 172.17.80.2 24.172.17.60 172.17.80.2
option 249 ip 24.192.168.126 172.17.80.2 24.172.17.60 172.17.80.2
But later I realized that I had an error in my routes, but after I added
ip route 172.17.60.0 255.255.255.0 172.17.80.2 3
ip route 192.168.126.0 255.255.255.0 172.17.80.2 2
to my config it worked for all, also static ip machines.
172.17.80.2 is the Endian firewall that terminates the ipsec tunnels, and 172.17.60 and 192.168.126 are subnets at two remote branches.
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