OpenVPN slow on Windows. v3ng Member. December 2017 in Help. Hi, I am running an OpenVPN server on my KVM VPS. If I connect to it from a Linux Client, it works great

Or rather, I know how to make it faster, but do not know why it is slow. It seems that AES cipher interferes somehow with TCP on this particular server and results in the low performance. If I change the cipher to, say, 3des (which is slower as reported by "openssl speed"), I get 150mbps. After some trials, I now use this: Inside the (UDP) OpenVPN tunnel however, speeds would average at 21 Mbit/s - roughly 10x slower. (There is a significant latency between the servers: around 130 ms, and the transfers were measured using Iperf3 in TCP mode.) Tried all the suggestions on answers here as of this writing, and nothing helped. Jan 18, 2019 · lzo provides a slightly better compression ratio than the lz4 compression (available in OpenVPN v2.4 and above). It is however, considerably slower and uses more CPU. So you probably shouldn’t be using it unless for backward compatibility reasons. Worst-case scenario, using lzo might add an extra 1 byte of overhead for incompressible packets. Posted: Fri Dec 30, 2016 16:29 Post subject: Slow OpenVPN performance: I have a 15Mbps service and get 15Mbps with no VPN (don't laugh I'm on a Caribbean island). Using the Expressvpn app on my PC I get no noticeable drop in speed. However when I run openvpn on my Buffalo WHR-300HP2 (build 22750) it maxes out at 3Mbps. Oct 08, 2019 · To solve the problem of slow VPN speed, you might need to check the servers. The reason for the slow speed may be the wrong choice of server location. The farther the server is from your current

VPN software allows you to connect to a server using a protocol and port number combination aka UDP and TCP. But, certain networks deliberately limit protocol and port speed. So, another way to make a VPN not slow down your connection is to switch to another port or protocol until you can find an optimal combination.

Without OpenVPN (directly) it goes max (~1,90 MB/s). Only when using VPN it slows down to mentioned 50-100 kbps. I also tested drectly connection (with FTP) to the VPS: it goes max up / down. I'm reading dd-wrt docs right now, but there is not many options to play with

I haven’t tested it in a while but when I did yes my speeds were that slow. I ended up using Hyper-v to spin up a OpenVPN vm. However, I would love to be able to just use the USG because of the easy site to site setup.

Aug 02, 2019 · Slow VPN connections can be the result of a dozen different problems. Some of these are simple and easy to work with, others are more difficult and can only be fixed indirectly. Before you can speed up your VPN, you need to figure out what’s making it so slow in the first place. However, VPN connections incur additional overhead due to the encryption process; using higher levels of encryption would slow the connection even more. This can certainly be further reduced by connecting to gateways that have additional routing latency or have a lot of traffic on them at the time. Oct 21, 2009 · It may be fine to use SSH or stunnel to ship data securely, but when performance is required and encryption cannot slow down communication, something else is necessary. OpenVPN is easy to configure, but it may not be sufficient. Without OpenVPN (directly) it goes max (~1,90 MB/s). Only when using VPN it slows down to mentioned 50-100 kbps. I also tested drectly connection (with FTP) to the VPS: it goes max up / down. I'm reading dd-wrt docs right now, but there is not many options to play with The short answer is yes, a VPN can slow your connection speed. The slightly longer answer is that is can also speed it up. OpenVPN slow on Windows. v3ng Member. December 2017 in Help. Hi, I am running an OpenVPN server on my KVM VPS. If I connect to it from a Linux Client, it works great