l2tp vpn issue

Asked by sreejith on 2014-07-23

Hi all,

I have problem with ubuntu xl2tp 14.04 vpn sever. linux pc got two ethernet port(eth0 connected internet, eth1 192.168.12.1 connected to windows pc using 192.168.12.2). linux pc configured xl2tp vpn server and could establish connection with gprs router using xl2tp as client. released the tunnel ip also. linux side ip 172.16.1.1 ..gprs router side 172.16.1.30.

from linux vpn server i can ping to 172.16.1.1 and 172.16.1.30
from gprs router i can reach to both tunnel ip

but, from my windows system i could not reach to 172.16.1.30(gprs router end).i can reach to linux side tunnel ip ie,172.16.1.1

what could be the problem..
pls provide the solution.

Regards,
Jithu

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu network-manager Edit question
Assignee:
No assignee Edit question
Last query:
2014-07-23
Last reply:
2014-07-23

Have you tried setting a route, manually, on Windows on how to get to the other network?
May help

sreejith (nlsreejith) said : #3

windows ip 192.168.12.2 gw 192.168.12.1

from windows i can reach all linux interfaces

Thomas Kr├╝ger (thkrueger) said : #4

Is routing activated?
What is the content of your routing table? (command: ip r)

sreejith (nlsreejith) said : #5

root@vpnserver-Name:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
R3000-2G * 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
192.168.12.0 * 255.255.255.0 U 1 0 0 eth1
root@sreejith-System-Product-Name:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:00:00:00:01:f8
          inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:3699 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3015 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3467288 (3.4 MB) TX bytes:486151 (486.1 KB)

eth1 Link encap:Ethernet HWaddr 00:50:ba:cd:4d:b7
          inet addr:192.168.12.1 Bcast:192.168.12.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:47 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:8420 (8.4 KB)

lo Link encap:Local Loopback
          inet addr:127.0.0.1 Mask:255.0.0.0
          UP LOOPBACK RUNNING MTU:65536 Metric:1
          RX packets:273 errors:0 dropped:0 overruns:0 frame:0
          TX packets:273 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:35912 (35.9 KB) TX bytes:35912 (35.9 KB)

ppp0 Link encap:Point-to-Point Protocol
          inet addr:172.16.1.1 P-t-P:172.16.1.30 Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1280 Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:87 (87.0 B) TX bytes:60 (60.0 B)

rroot@vpnserver-Name:~:~# ping 172.16.1.1
PING 172.16.1.1 (172.16.1.1) 56(84) bytes of data.
64 bytes from 172.16.1.1: icmp_seq=1 ttl=64 time=0.047 ms
64 bytes from 172.16.1.1: icmp_seq=2 ttl=64 time=0.043 ms
^C
--- 172.16.1.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.043/0.045/0.047/0.002 ms
root@sreejith-System-Product-Name:~# ping 172.16.1.30
PING 172.16.1.30 (172.16.1.30) 56(84) bytes of data.
64 bytes from 172.16.1.30: icmp_seq=1 ttl=64 time=979 ms
64 bytes from 172.16.1.30: icmp_seq=2 ttl=64 time=380 ms
^C
--- 172.16.1.30 ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2000ms
rtt min/avg/max/mdev = 380.295/679.981/979.668/299.687 ms

=================================================
windows route
----------
Active Routes:
Network Destination Netmask Gateway Interface Metric
          0.0.0.0 0.0.0.0 192.168.12.1 192.168.12.2 20
        127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
       172.16.1.0 255.255.255.255 192.168.12.1 192.168.12.2 1
      192.168.1.1 255.255.255.255 192.168.12.1 192.168.12.2 1
     192.168.12.0 255.255.255.0 192.168.12.2 192.168.12.2 20
     192.168.12.2 255.255.255.255 127.0.0.1 127.0.0.1 20
   192.168.12.255 255.255.255.255 192.168.12.2 192.168.12.2 20
        224.0.0.0 240.0.0.0 192.168.12.2 192.168.12.2 20
  255.255.255.255 255.255.255.255 192.168.12.2 192.168.12.2 1
  255.255.255.255 255.255.255.255 192.168.12.2 3 1
Default Gateway: 192.168.12.1
===========================================================================

sreejith (nlsreejith) said : #7

ping reply frm windows

C:\Documents and Settings\SreejithLohithakshan>ping 192.168.1.100

Pinging 192.168.1.100 with 32 bytes of data:

Reply from 192.168.1.100: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.1.100:
    Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C
^C
C:\Documents and Settings\SreejithLohithakshan>ping 192.168.12.1

Pinging 192.168.12.1 with 32 bytes of data:

Reply from 192.168.12.1: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.12.1:
    Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C

C:\Documents and Settings\SreejithLohithakshan>
C:\Documents and Settings\SreejithLohithakshan>ping 172.16.1.1

Pinging 172.16.1.1 with 32 bytes of data:

Reply from 172.16.1.1: bytes=32 time<1ms TTL=64
Reply from 172.16.1.1: bytes=32 time<1ms TTL=64

Ping statistics for 172.16.1.1:
    Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 0ms, Average = 0ms
Control-C
^C
C:\Documents and Settings\SreejithLohithakshan>ping 172.16.1.30

Pinging 172.16.1.30 with 32 bytes of data:

Request timed out.

Ping statistics for 172.16.1.30:
    Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),
Control-C
^C
C:\Documents and Settings\SreejithLohithakshan>

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