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I have remote server(ubuntu server). I access remote server by ssh as ssh root@IP_OF_SERVER, then I have setup a webapp running in server and access it by IP_OF_SERVER:80. Every thing is working fine. Now I want to access server only over VPN means ssh over vpn connection. Here is my setup

local system <----> Mikrotik router <---------internet-------> remote server(ubuntu)

I have installed IPSEC_L2TP_vpn_with_Ubuntu_12.04 in remote server.

In mikrotik router I have setup L2TP client now I can able to connect to VPN server of ubuntu from Mikrotik router. I can also able to ping remote server, but I can't do ssh to remote server when VPN is connected and also can't get webapp(IP_OF_SERVER:80) in my local system. what would be the problem? Outside VPN, remote server is accessible over ssh but not inside VPN. My local system is have ubuntu desktop.

Update: After mikrotik router connected to VPN server of Remote server. Result of telnet:

niren@slash:~$ telnet SERVER_IP 443
Trying SERVER_IP...
Connected to SERVER_IP.
Escape character is '^]'.

niren@slash:~$ telnet SERVER_IP 22
Trying SERVER_IP...
telnet: Unable to connect to remote host: Connection refused

niren@slash:~$ telnet SERVER_IP 80
Trying SERVER_IP...
telnet: Unable to connect to remote host: Connection refused

Result of PING:

niren@slash:~$ ping SERVER_IP
PING SERVER_IP (SERVER_IP) 56(84) bytes of data.
64 bytes from SERVER_IP: icmp_seq=1 ttl=64 time=0.389 ms
64 bytes from SERVER_IP: icmp_seq=2 ttl=64 time=0.280 ms
64 bytes from SERVER_IP: icmp_seq=3 ttl=64 time=0.246 ms

Result of SSH:

niren@slash:~$ ssh root@SERVER_IP
ssh: connect to host SERVER_IP port 22: Connection refused
  • firewall maybe? – masegaloeh May 16 '14 at 18:25
  • I turned off firewall and tried but no luck – niren May 16 '14 at 18:25
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Make sure you have OPENSSH installed on both machines for SSHing. Use sudo apt-get install openssh-server for the one you want to SSH into and sudo apt-get install openssh-client for the one you want to SSH from.

  • OP stated that he has working SSH connection before VPN implemented. – masegaloeh May 17 '14 at 6:46
  • Oh, I apologize. I got a bit confused by his wording. Someone please remove my answer then. – LoganR May 17 '14 at 15:02

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