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8.4

Routing issues with OpenVPN on DD-WRT routed tunnel

Asked by ccadsales in Virtual Private Networking (VPN), Network Design & Methodology, Linux Networking

Tags: OpenVPN, Linksys, WRT54GL, Routed VPN tunell

I have been trying to setup a routed vpn tunnel between two sites on a pair of WRT54GL's to replace the OpenVPN software implementation previously in place.
10.0.0.0 is the host network, 192.168.0.0 is the client network, 172.16.8.0 is the tunnel's subnet. The client connects and the entire client network can access the host network, however when I attempt to ping 192.168.0.1 (the client router) from the host router (using ssh) it times out. I can ping 172.16.8.6 (it's address on the tunnel subnet). The old software implementation did not have this problem.
In short:
Host --> Client : Fails
Client --> Host : Works


I've been fighting this thing for nearly two days now, any help would be appreciated. 
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My host conf:
---------------------
push "route 10.0.0.0 255.255.255.0"
server 172.16.8.0 255.255.255.0
port 1195
dev tun0
proto udp
 
comp-lzo
client-to-client
keepalive 10 60
dh /tmp/openvpn/dh.pem
ca /tmp/openvpn/ca.crt
cert /tmp/openvpn/cert.pem
key /tmp/openvpn/key.pem 
verb 5
-----------------------
 
My Host firewall:
-----------------------
iptables -I INPUT 1 -p tcp --dport 1195 -j ACCEPT
iptables -I INPUT 1 -p udp --dport 1195 -j ACCEPT
iptables -I FORWARD 1 --source 172.16.8.0/24 -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o tun0 -j MASQUERADE 
iptables -I FORWARD -i br0 -o tun0 -j ACCEPT
iptables -I FORWARD -i tun0 -o br0 -j ACCEPT
-----------------------
 
Host Route table:
-----------------------
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
172.16.8.2      *               255.255.255.255 UH    0      0        0 tun0
10.0.0.0        *               255.255.255.0   U     0      0        0 br0
192.168.0.0     *               255.255.255.0   U     0      0        0 tun0
172.16.8.0      172.16.8.2      255.255.255.0   UG    0      0        0 tun0
74.219.99.0     *               255.255.255.0   U     0      0        0 vlan1
169.254.0.0     *               255.255.0.0     U     0      0        0 br0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         rrcs-*-*-*- 0.0.0.0         UG    0      0        0 vlan1
-----------------------
 
Client Routing table:
-----------------------
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
75.60.191.254   *               255.255.255.255 UH    0      0        0 ppp0
172.16.8.5      *               255.255.255.255 UH    0      0        0 tun0
10.0.0.0        172.16.8.5      255.255.255.0   UG    0      0        0 tun0
192.168.0.0     *               255.255.255.0   U     0      0        0 br0
172.16.8.0      172.16.8.5      255.255.255.0   UG    0      0        0 tun0
169.254.0.0     *               255.255.0.0     U     0      0        0 br0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         adsl-*-*-*- 0.0.0.0         UG    0      0        0 ppp0
-----------------------
[+][-]10/24/08 10:57 PM, ID: 22801841Accepted Solution

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About this solution

Zones: Virtual Private Networking (VPN), Network Design & Methodology, Linux Networking
Tags: OpenVPN, Linksys, WRT54GL, Routed VPN tunell
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Solution Provided By: Redimido
Participating Experts: 1
Solution Grade: B
 
 
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