Game VPN, TAP, Delays

mm93

Hi, i have the following issue:

I made a VPN to play Call of Duty 2 with friends. Whenever we play, there are some lags, and sometime the connection in the game is aborted for about 1 second. But the connect is re-established very fast. The pings beetween the users are ok ~50 ms.

I've used no encryption and udp to make the vpn faster.

How could I find out whats the problem? Is there any possibility?

Clientconfig:

dev tap
persist-tun
persist-key
cipher none
auth SHA1
tls-client
client
resolv-retry infinite
remote *server.ip* 1194 udp
lport 0
auth-user-pass
ca gaming-vpn-ca.crt
comp-lzo

Serverconfig: (pfsense)

dev ovpns1
dev-type tap
dev-node /dev/tap1
writepid /var/run/openvpn_server1.pid
#user nobody
#group nobody
script-security 3
daemon
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
proto udp
cipher none
up /usr/local/sbin/ovpn-linkup
down /usr/local/sbin/ovpn-linkdown
client-connect /usr/local/sbin/openvpn.attributes.sh
client-disconnect /usr/local/sbin/openvpn.attributes.sh
local REMOTE-IP
tls-server
server 10.0.8.0 255.255.255.0
client-config-dir /var/etc/openvpn-csc
client-cert-not-required
username-as-common-name
auth-user-pass-verify /var/etc/openvpn/server1.php via-env
lport 1194
management /var/etc/openvpn/server1.sock unix
max-clients 20
push "dhcp-option DOMAIN gamingvpn.local"
client-to-client
duplicate-cn
ca /var/etc/openvpn/server1.ca
cert /var/etc/openvpn/server1.cert
key /var/etc/openvpn/server1.key
dh /etc/dh-parameters.1024
comp-lzo
persist-remote-ip
float

Thanks for your help!

Best regards,
Mark

Traffic

Latency problems are notoriously hard to trouble shoot as you have to consider every single link in all you network connections .. not just OpenVPN.

However, some notes:

See --sndbuf --rcvbuf --nice --fastio --mlock -- in The Manual v23x .. You may be able to squeeze a little more performance out of your VPN.

Also, See --reneg-sec in The Manual v23x .. you are likely to experience key renegotiation once per hour with your current setup.

Why do you use lport 0 in your client config .. i suggest --nobind instead.

In your server config: local REMOTE-IP .. this just looks wrong ..

mm93

Traffic wroteLatency problems are notoriously hard to trouble shoot as you have to consider every single link in all you network connections .. not just OpenVPN.

However, some notes:

See --sndbuf --rcvbuf --nice --fastio --mlock -- in The Manual v23x .. You may be able to squeeze a little more performance out of your VPN.

Also, See --reneg-sec in The Manual v23x .. you are likely to experience key renegotiation once per hour with your current setup.

Why do you use lport 0 in your client config .. i suggest --nobind instead.

In your server config: local REMOTE-IP .. this just looks wrong ..

Hi,

thanks for your help!!!

Im going to have a look at this options and try another server this weekend.

Is there any benchmark for OpenVPN? I had 8 Users online, could this cause the delays?
Im running a virtual pfsense in VMWare ESXi 4 on a Intel Xeon CPU 3,20 GHz with 512 MB RAM (Host has 4 GB RAM)

The lport0 in the config was generated by the pfsense firewall. Don't even know why.

REMOTE-IP means my Server-IP, sorry.

Thanks in advance,

Mark

mm93

Can anybody help me please?

I've tried everything already. If there are more then two Users, pings get lost and game starts lagging.

I've tried seperal Servers, tried different Providers. Changed MTU Size to 1400.

Nothing helps. 🙁 🙁

mm93

And is there anybody how may could test the VPN with me? Please guys.

Traffic

mm93 wroteIm running a virtual pfsense in VMWare ESXi 4 on a Intel Xeon CPU 3,20 GHz with 512 MB RAM (Host has 4 GB RAM)

Stop using VMs while using high performance requirements like games.

Also, check your opponents setups and network speeds.