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Topic: OpenVPN Client problem (Read 2887 times)
carrista
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OpenVPN Client problem
«
on:
April 10, 2018, 12:52:10 pm »
Hello to Everyone,
I have 3 offices that I need to connect together.
Office n. 1 is the main one, with a WatchGuard XTM 330 as a SSL VPN Server, with 192.168.1.0/24 as subnet and 192.168.113.0/24 as tunnel network.
Office n. 2 has a OPNSense 18.1.5 installed in a VM on top of a ProxMox 5.0 (KVM) with 2 adapters, and is the main FW for 192.168.3.0/24, connected with OpenVPN Client to Office n. 1. I also setup on it an OpenVPN Server for testing purposes.
Office n. 3 has a OPNSense 18.1.5 installed in a VM on top of a ProxMox 5.0 (KVM) with 2 adapters, and is the main FW for 192.168.10.0/24. It has OpenVPN Client connected to Office 1 (WatchGuard SSL VPN Server) and Office 2 (OpenVPN Server).
From Office 3 perspective, if I ping Office 2 or Office 1, either WatchGuard or OpenVPN, often it does not work at all at first try. But if I try 3 seconds later, it work. After 3 sec, it don't work again. It seems like a routing problem, but I checked all routes, gateways and firewall rules and everything seems to be correct.
This Setup sometimes works, sometimes not.
Check this real example :
marco@desktop:~$ date
mer 4 apr 2018, 12.19.43, CEST
marco@desktop:~$ ping 192.168.3.1
PING 192.168.3.1 (192.168.3.1) 56(84) bytes of data.
^C
--- 192.168.3.1 ping statistics ---
6 packets transmitted, 0 received, 100% packet loss, time 5123ms
marco@desktop:~$ date
mer 4 apr 2018, 12.19.51, CEST
marco@desktop:~$ ping 192.168.3.1
PING 192.168.3.1 (192.168.3.1) 56(84) bytes of data.
64 bytes from 192.168.3.1: icmp_seq=1 ttl=63 time=19.9 ms
64 bytes from 192.168.3.1: icmp_seq=2 ttl=63 time=20.6 ms
64 bytes from 192.168.3.1: icmp_seq=3 ttl=63 time=20.2 ms
64 bytes from 192.168.3.1: icmp_seq=4 ttl=63 time=20.1 ms
64 bytes from 192.168.3.1: icmp_seq=5 ttl=63 time=22.6 ms
^C
--- 192.168.3.1 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
rtt min/avg/max/mdev = 19.943/20.722/22.640/0.991 ms
This happens also between Office 2 and Office 1.
Previously I had used Pfsense and I never experienced anything like that.
If I connect to Office 1 with OpenVPN client on devices, everything works fine
Any suggestion on this issue?
Thank you
Marco
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