Inbound connection (e.g. VPN) traffic throttling?

Does Fios throttle (or otherwise limit) traffic on inbound connections? I ask because while I consistently get 850mbps down/up from within my network, I get no more than 40 down/up from outside the network going in. I’ve verified via iperf3 and an html speed test hosted on my network. Also ookla speed tests while VPNing into my network via Wireguard get no better than 40. I’ve tried from multiple networks, all with internet connections > 500mbps. I’ve also gone as far as to test my router directly by connecting my computer to its wan port and performing the same types of tests (all expected speeds). The weak link seems to be my ISP.

Anybody else experience this?

I doubt Verizon will know if you are running a VPN in your network. It might be MTU configuration?

On some ports, yes. They absolutely throttle TCP port 443 incoming. They slowly expanded it from just being from some sources to all sources over the past few years. VPN or cloudflare tunnel was my way around it. Last I checked my VPN was unaffected, but it’s possible that they’re now doing it on all inbound connections.

Without using a VPN, where are you testing from? Cause it could very well be the max bandwidth from the location you’re testing.

VPNs also reduce speeds due to the encryption and decryption. But because the traffic is encrypted they can’t tell what you’re doing.

Now if you’re not doing cloud tunnels and simply have a port open, they could be blocking or throttling certain services as technically you’re not allowed to to run them unless you’re in a business account…

Do with this info as you will, but I switched over to Optimum Fiber 1gig service and my L2TP VPN speeds are significantly faster than before (compared to when I had Fios). From around 40Mbps with Fios to hovering around 120Mbps with Optimum. I made no changes to my home firewall and made no changes to the firewall here at work ¯\_(ツ)_/¯

I’ve tried multiple MTU values down to 1280, but no joy. It appears to be more than VPN traffic: http and iperf also show similar results.

Lame, but also is what it is I guess.

VPN or cloudflare tunnel was my way around it.

How do you connect to your home network with this setup? Do you host a VPN within your network? Or are you saying that you connect to a VPN from within your network.

What’s a bit surprising to me is that I had similar results connecting via shadowsocks. I’m new to shadowsocks, but I would have thought that would obfuscate the traffic…it’s almost as if all traffic is throttled when coming in from outside.

Thanks for replying! The bandwidth as measured by ookla and/or waveform was > 500 mbps; I tried from a handful of connections.

VPNs also reduce speeds due to the encryption and decryption. But because the traffic is encrypted they can’t tell what you’re doing.

Connecting directly to my router’s WAN port from a computer revealed that it was it was able to handle 600mbps up/down when connected via a wireguard tunnel, so I don’t think the encryption overhead is to blame.

Now if you’re not doing cloud tunnels and simply have a port open

What is a cloud tunnel? I connect to my home network (router) directly via open ports, so I assume I fall under the latter.

they could be blocking or throttling certain services

Can you elaborate? My endgame is to VPN into my home network for internal access (and security) whenever I’m outside my home. It seems odd to me (although certainly possible) that this would technically be disallowed without a business account.

Appreciate the info. Thanks!

My router runs a VPN server (wireguard for most clients and one site to site connection, and an ipsec tunnel for another site to site connection that’s using ESP and not UDP encapsulation). I haven’t benchmarked it over the VPN recently, but at least as of several months ago it bypassed the throttle, I’m guessing because it’s UDP. The ipsec tunnel will slow down a lot in the evenings sometimes, but I think that’s more due to general congestion (the other side of the tunnel is in Europe, so there’s more chokepoints for congestion).

For cloudflare, I have computer running cloudflared, which I also have a webserver on. I’ll use it occasionally to download larger files in addition to accessing self hosted things. As of a couple weeks ago, access directly was throttled, but if I accessed it via the cloudflare tunnel it wasn’t.