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Hi
I know there are a couple of questions regarding this matter and I read them all but couldn't make it work. In my work place, we use vpn connections for bandwidth usage monitoring. The server uses pptp so I decided to go with kvpnc with the pptp-client backend. The first time I configured the app, it worked like a charm but the day after that it just stopped working. I figured out there was a routing problem so I tried to manipulate the routing table but no luck. So here's the scenario. I have a LAN connection with 192.168.0.151 (255.255.255.0). In order to connect to the Internet I have to use a VPN connection, where my IP is 172.16.0.110. The problem is my computer doesn't realize I have connected to the VPN server so it still sends all requests through the LAN interface. This is my routing table after I connect to the Internet:
[navid@localhost ~]$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.22.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
And here's a Windows client's route table after it connects to the VPN connection:
===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 16 e6 4a 35 58 ...... Broadcom NetLink (TM) Gigabit Ethernet - Packet Scheduler Miniport
0x60004 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.16.0.100 172.16.0.100 1
0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.11 21
80.191.243.25 255.255.255.255 192.168.0.1 192.168.0.11 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
72.16.0.100 255.255.255.255 127.0.0.1 127.0.0.1 50
172.16.255.255 255.255.255.255 172.16.0.100 172.16.0.100 50
192.168.0.0 255.255.255.0 192.168.0.11 192.168.0.11 20
192.168.0.11 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.0.255 255.255.255.255 192.168.0.11 192.168.0.11 20
224.0.0.0 240.0.0.0 192.168.0.11 192.168.0.11 20
224.0.0.0 240.0.0.0 172.16.0.100 172.16.0.100 1
255.255.255.255 255.255.255.255 172.16.0.100 172.16.0.100 1
255.255.255.255 255.255.255.255 192.168.0.11 192.168.0.11 1
Default Gateway: 172.16.0.100
===========================================================================
Persistent Routes:
None
I know the question has been asked before but I have really limited network knowledge, so PLEASE help.
Last edited by n.paya (2008-08-27 05:01:21)
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Another thing, when I traceroute 4.2.2.4 this is what I get:
1 192.168.0.1 (192.168.0.1) 1.667 ms 1.902 ms 1.509 ms
2 172.22.0.1 (172.22.0.1) 2.036 ms 1.639 ms 1.657 ms
3 80.191.243.10 (80.191.243.10) 1.849 ms 1.670 ms 2.045 ms
This is what the Windows client gets:
1 171 ms 199 ms 177 ms 172.22.0.1
2 75 ms 96 ms 102 ms 80.191.243.10
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Hi
I started this thread but got no response so I guess it has something to do with the way I asked my question. So here it goes once again. I need to connect using a VPN connection at my work. The problem is when I connect using KVPNC it doesn't add the right route so I still can't get to the Internet. Can you give me some guidance what route to add for the new connection? Pleasssssseeee help. I'm really going insane.
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Yes, your routing is wrong. The first route in your initial post (the only one referring to ppp0) and your default route are faulty. You need to remove both of them, and then add a new default route.
From an empty routing table, it should be enough to do:
route add -net 192.168.0.0/24 eth0
route add default ppp0I don't know how to empty the routing table in one go, but you remove the exising ones with various invocations of route del <route>.
You should be able to do all this route fixing in /etc/ppp/ip-up (and when taking the tunnel down, in /etc/ppp/ip-down) if kvpnc is only a frontend for pptp/ppp.
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