When connected to VPN, all Internet traffic is slow

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damista
OpenVpn Newbie
Posts: 1
Joined: Thu Sep 01, 2022 3:08 am

When connected to VPN, all Internet traffic is slow

Post by damista » Thu Sep 01, 2022 3:57 am

I have a bit of an odd problem.

We're running OpenVPN through a PFSense firewall and the VPN itself is fine but non-related traffic appears to be hampered. Connecting to a website when the VPN is up takes a good 30 seconds, doing a tracert, it takes a good 15-20 seconds per hop and customers connecting to the VPN are complaining that Microsoft 365 is unbearably slow.

I suspected that all traffic is being routed through the VPN but it isn't and when I perform Ookla's speed test, it shows the correct ISP and speeds of the local service, so it isn't going through the VPN. When I disconnect the VPN, all goes back to normal.

I tested a different VPN, based on a TP-Link router, using the same OpenVPN client, this doesn't happen.

I'm scratching my head where the problem could be. Any ideas?

Client version is 2.4.7

TinCanTech
OpenVPN Protagonist
Posts: 11137
Joined: Fri Jun 03, 2016 1:17 pm

Re: When connected to VPN, all Internet traffic is slow

Post by TinCanTech » Thu Sep 01, 2022 9:47 am


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