Hi
I wanted advice on how to make all external traffic
flow through the secound interface (ppp0)
I am trying to connect my PC to another network
using VPN [OpenSWAN]. I am able to connect , but I am
not able to ping or traceroute outside world
through the VPN interface.
I doubt this is due to routing problem . I tried to
solve it using ip route command
Folowing are observation:-
Before connecting to the VPN server
my linux client route is
[EMAIL PROTECTED] etc]# route
Kernel IP routing table
Destination Gateway Genmask Flags
Metric Ref Use Iface
169.254.0.0 * 255.255.0.0 U
0 0 0 eth0
10.0.0.0 * 255.0.0.0 U
0 0 0 eth0
default 10.0.0.1 0.0.0.0 UG
0 0 0 eth0
[EMAIL PROTECTED] etc]#
Now after connecting to the VPN
[EMAIL PROTECTED] etc]# ifconfig
eth0 Link encap:Ethernet HWaddr
00:0C:29:B7:E8:16
inet addr:10.0.0.13 Bcast:10.255.255.255
Mask:255.0.0.0
inet6 addr: fe80::20c:29ff:feb7:e816/64
Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500
Metric:1
RX packets:14097 errors:0 dropped:0
overruns:0 frame:0
TX packets:4167 errors:0 dropped:0
overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1051161 (1.0 MiB) TX bytes:531339
(518.8 KiB)
Interrupt:10 Base address:0x1400
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0
frame:0
TX packets:8 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:0
RX bytes:560 (560.0 b) TX bytes:560 (560.0
b)
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.168.100
P-t-P:192.168.168.167 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST
MTU:1410 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0
frame:0
TX packets:8 errors:0 dropped:0 overruns:0
carrier:0
collisions:0 txqueuelen:3
RX bytes:462 (462.0 b) TX bytes:468 (468.0
b)
[EMAIL PROTECTED] etc]# route
Kernel IP routing table
Destination Gateway Genmask Flags
Metric Ref Use Iface
192.168.168.167 * 255.255.255.255 UH
0 0 0 ppp0
169.254.0.0 * 255.255.0.0 U
0 0 0 eth0
10.0.0.0 * 255.0.0.0 U
0 0 0 eth0
default 10.0.0.1 0.0.0.0 UG
0 0 0 eth0
[EMAIL PROTECTED] etc]#
at this stage , when I do ping -I 192.168.168.100
outsideIP , I do not get reply
but I get reply for ping -I 192.168.168.100 MyVPN
serverIP address.
In order to route the traffic through ppp0 , I did try
route add default gw 192.168.168.167 ppp0
which gives the route result as
[EMAIL PROTECTED] etc]# route
Kernel IP routing table
Destination Gateway Genmask Flags
Metric Ref Use Iface
192.168.168.167 * 255.255.255.255 UH
0 0 0 ppp0
169.254.0.0 * 255.255.0.0 U
0 0 0 eth0
10.0.0.0 * 255.0.0.0 U
0 0 0 eth0
default 192.168.168.167 0.0.0.0 UG
0 0 0 ppp0
default 10.0.0.1 0.0.0.0 UG
0 0 0 eth0
After this stage also , my traffic get routed through
eth0 , not through ppp0
My intention is to route all the traffic through ppp0
, once the VPN connection established.
Note:- My Dual boot XP gets connected and the traffic
are routed through ppp0 by default.
Guidance requested
Joseph John
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