Hi,
Here's the thing I have a few computers on this VPN network. Let's call them like this:\
VPN IP subnet 192.168.0.0/24.
X - My remote VPS server hosting pptpd VPN. (192.168.0.1)
A - local web server (Linux Debian 7 Cubian) connected to a VPN server X. (192.168.0.10)
B - local PC (Windows) also connected to a VPN server X. (192.168.0.3)
Server X can ping computer B but can't ping server A or access it in any kind. Computer B can ping remote server X but can't ping server A. When I try to ping server X and computer B from a local web server A it works.
Here is a diagram of this situation if it's not clear.
http://i.imgur.com/dd0Msj1.png
So I guess the problem is with my local web server A. Other computers on the VPN can't access the local web server A or ping it but server A can access and ping other computers on the VPN.
Also on the local network computer A responds to ping packets and can be accessed without a problem.\
Server A info (192.168.0.10):
Code:
cubie@Cubian:~$ ifconfig
eth0 Link encap:Ethernet HWaddr XX:b0:XX:59:04:XX
inet addr:192.168.1.7 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::c2b0:cbff:fe59:470/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:54203 errors:0 dropped:0 overruns:0 frame:0
TX packets:40987 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8258576 (7.8 MiB) TX bytes:3641634 (3.4 MiB)
Interrupt:87 Base address:0x8000
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:40667 errors:0 dropped:0 overruns:0 frame:0
TX packets:40667 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:5076069 (4.8 MiB) TX bytes:5076069 (4.8 MiB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.0.10 P-t-P:192.168.0.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1496 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:938 (938.0 B) TX bytes:824 (824.0 B)
cubie@Cubian:~$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default PENTIUM1 0.0.0.0 UG 0 0 0 eth0
web.nikos-hosti PENTIUM1 255.255.255.255 UGH 0 0 0 eth0
192.168.0.0 * 255.255.255.0 U 0 0 0 ppp0
192.168.0.1 * 255.255.255.255 UH 0 0 0 ppp0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
cubie@Cubian:~$ ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
64 bytes from 192.168.0.3: icmp_req=1 ttl=127 time=299 ms
64 bytes from 192.168.0.3: icmp_req=2 ttl=127 time=398 ms
64 bytes from 192.168.0.3: icmp_req=3 ttl=127 time=301 ms
64 bytes from 192.168.0.3: icmp_req=4 ttl=127 time=343 ms
^C
--- 192.168.0.3 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 299.381/335.674/398.799/40.498 ms
cubie@Cubian:~$ ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_req=1 ttl=64 time=144 ms
64 bytes from 192.168.0.1: icmp_req=2 ttl=64 time=145 ms
64 bytes from 192.168.0.1: icmp_req=3 ttl=64 time=144 ms
64 bytes from 192.168.0.1: icmp_req=4 ttl=64 time=143 ms
^C
--- 192.168.0.1 ping statistics ---
5 packets transmitted, 4 received, 20% packet loss, time 4004ms
rtt min/avg/max/mdev = 143.992/144.823/145.721/0.721 ms
VPN host server X:
Code:
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:849 errors:0 dropped:0 overruns:0 frame:0
TX packets:849 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:79496 (79.4 KB) TX bytes:79496 (79.4 KB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.0.1 P-t-P:192.168.0.10 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1400 Metric:1
RX packets:23 errors:0 dropped:0 overruns:0 frame:0
TX packets:25 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1580 (1.5 KB) TX bytes:1694 (1.6 KB)
ppp1 Link encap:Point-to-Point Protocol
inet addr:192.168.0.1 P-t-P:192.168.0.3 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1400 Metric:1
RX packets:10699 errors:0 dropped:0 overruns:0 frame:0
TX packets:14492 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1926190 (1.9 MB) TX bytes:10095165 (10.0 MB)
venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:127.0.0.2 P-t-P:127.0.0.2 Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
RX packets:188141 errors:0 dropped:0 overruns:0 frame:0
TX packets:191114 errors:0 dropped:170 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:60151570 (60.1 MB) TX bytes:63591812 (63.5 MB)
venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:162.XXX.9.XXX P-t-P:162.XXX.9.XXX Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
venet0:1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:162.XXX.9.XXX P-t-P:162.XXX.9.XXX Bcast:0.0.0.0 Mask:255.255.255.255
UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
root@web:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.10 * 255.255.255.255 UH 0 0 0 ppp0
192.168.0.3 * 255.255.255.255 UH 0 0 0 ppp1
default * 0.0.0.0 U 0 0 0 venet0
root@web:~# ping 192.168.0.3
PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data.
64 bytes from 192.168.0.3: icmp_req=1 ttl=128 time=154 ms
64 bytes from 192.168.0.3: icmp_req=2 ttl=128 time=182 ms
^C
--- 192.168.0.3 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 154.680/168.731/182.783/14.057 ms
root@web:~# ping 192.168.0.10
PING 192.168.0.10 (192.168.0.10) 56(84) bytes of data.
64 bytes from 178.221.37.39: icmp_req=1 ttl=50 time=157 ms
64 bytes from 178.221.37.39: icmp_req=2 ttl=50 time=153 ms
64 bytes from 178.221.37.39: icmp_req=3 ttl=50 time=154 ms
^C
Computer B info (Windows):
Code:
C:\Windows\System32>ping 192.168.0.1
Pinging 192.168.0.1 with 32 bytes of data:
Reply from 192.168.0.1: bytes=32 time=155ms TTL=64
Reply from 192.168.0.1: bytes=32 time=156ms TTL=64
Reply from 192.168.0.1: bytes=32 time=156ms TTL=64
Reply from 192.168.0.1: bytes=32 time=156ms TTL=64
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 155ms, Maximum = 156ms, Average = 155ms
C:\Windows\System32>ping 192.168.0.10
Pinging 192.168.0.10 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.0.10:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
UPDATE: As I can see, now the VPN server X can only ping but not access web server (port 80) on server A, that's weird because ping and access to a web server didn't work yesterday.
What should I do to allow the other computers on the VPN to access and ping the local web server A?
Thanks for the help!
Best Regards!
