maybe you can help me out with my issue here.
At first I had a MTU problem that larger packages did not go through, but I was able to fix this with "mssfix".
Now in general larger packets go through the connection (ping test size 1600), but as soon as I start transferring a bigger amount of data over this connection (e.g. VNC remote control via TCP) the maximum size of the possible packets drops down to 1406 bytes (or down to 1326 bytes on another connection).
After about one minute past the big data transfer the large packets start working again.
My connection way looks like this:
Client1 -> Server (iptables, no client-to-client) -> Client2
Server, Debian, OpenVPN 2.2.1
server 10.101.0.0 255.255.0.0
keepalive 10 60
tls-auth ta.key 0 # This file is secret
status openvpn-status.log 1
plugin /usr/lib/openvpn/openvpn-auth-ldap.so /etc/openvpn/auth/auth-ldap.conf
route 10.1.0.0 255.255.0.0
route 10.100.0.0 255.255.0.0
management 127.0.0.1 2222
Client, Windows, OpenVPN 2.3.4
remote secret.com 1194
tls-auth SRV01_VPN1_VPN_ta.key 1
route 0.0.0.0 0.0.0.0
Large packets stop working (timeout):
Large packets start working again:
Have you guys any idea, where this problem could come from?