Openvpn idle bandwidth consumption too much?

[azizth]

Hi all,

I have two pfsense connect with Openvpn tunnel with peer to peer shared key.

In idle the tunnel network consumption is arround 700 kbps,I think it is much especially since I have about 800 kbps upload one on each side (ADSL).

I turned off all the equipment (PC etc. ..) on each side, it looks like its come from the tunnel.

I used the configuration in http://doc.pfsense.org/index.php/OpenVPN_Site-to-Site_(Shared_Key,_2.0)

Help please

[jimp]

Have you done a packet capture on the tunnel to see what the traffic is?

Normally the only idle traffic would be a ping/response once every 10 seconds with only minimal usage then.

[mhab12]

I've seen similar issues on an OpenVPN p2p shared key setup we have.  We were using FreeNAS (now Nas4Free) and ultimately a reboot of the NAS server cleared it up, though I am still not sure of the exact cause.  What services/traffic do you typically push over the OVPN link?

[johnpoz]

Until you do a sniff your just going to be guessing.

Troubleshooting: Unexplained network traffic
Step 1) Sniff the traffic to see what it is
Step 2) Fix what is causing the unwanted traffic you see in step 1
Step 3) Relax and have a beer.