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Pings from VPN network to VPN client work; pings into from VPN client to VPN network fail - why?

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http://serverfault.com – We are in the process of setting up an OpenVPN server for some servers running in a cloud. We are stumped with a connectivity problem whereby the hosts on the VPN server's LAN can ping te VPN client, but the reverse is not true. The VPN client can ping the VPN server on its VPN address, but not on its LAN address. tcpdump shows evidence of ping packets from the client reaching the host and replies being issued, but for some reason the replies never reach the tun0 interface on the VPN server or the client. Conversely, traffic for the ping requests from the VPN server's LAN to the VPN client a (HowTos)

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Submitted by u85500 on 03/14/2012 – Made popular on 03/14/2012

Stories similar to Pings from VPN network to VPN client work; pings into from VPN client to VPN network fail - why?

I have an OpenVPN server and I can connect to it just fine but I can not communicate with any other hosts on the network including the server. I can't ping from the server to an OpenVPN client, I can't ping from an OpenVPN client to the OpenVPN server, I can't ping from OpenVPN client to OpenVPN client or from OpenVPN client to normal LAN host and vise-versa.

The server and client can ping themselves but not each other. I have OpenVPN running on Windows 2008 Server and Windows 7. The computers connect just fine, the server gets 10.8.0.1 with a gateway of 10.8.0.2 and the client gets 10.8.0.10 with a gateway of 10.8.0.9. It's in tunnel mode.

Hello.

I have an issue with my openvpn server.

Problem:

Client computer can't ping server until the server has first pinged client. If I stop pinging the client from the server, the client will no longer be able to ping the server. Does anyone know what causes this and how to fix it?

Win7 to server 2008, firewalls off, no AV, etc.

I installed pptp server on a centos 6 64bit server

PPTP Server ip : 55.66.77.10 PPTP Local ip : 10.0.0.1 Client1 IP : 10.0.0.60 centos 5 64bit Client2 IP : 10.0.0.61 centos5 64bit

PPTP Server can ping Client1 And client 1 can ping PPTP Server PPTP Server can ping Client2 And client 2 can ping PPTP Server

The problem is client 1 can not ping Client 2

route -n on PPTP Server

Destination

Hello all,

I posted this to the openvpn forums, but I haven't gotten any response back, so I figured I'd give this forum a try.

We have a Solaris 10 server which is a Backup Server. This server is able to ping to client server A (Windows Server 2008), However unable to tracert to it.

OpenVPN tunnel routing issues 1 year 36 weeks ago

Please excuse my inexperience. I managed to setup a vpn connection between a single client and server. Currently I am testing this in VM's which are running Server 2008 R2 (temporary since I have install disks handy). Each VM is in a remote location with its own IP address. (I am remoting in).

What is happening is that I am able to ping the VPN Server from the client with no problem.

I am using Ubuntu Server 11.10 64 bit

I am trying to get PPTPD VPN working on it

I have tried multiply installation guides but each one I still get the same problem

When a client (Me on my laptop) connects, the network on the server freezes

When I try to ping say 8.8.8.8(The Google public DNS server) it will run though multiple pings before there is no response back.