There's this problem I've been struggling with without any luck. Seemingly, Softether vpn connections are throttled down in my country, resulting in a max connection speed of 600-700 KBytes/s. On the other hand, I know for a fact that obfuscation of connections using Obfs4 (Tor's pluggable transport) works well, allowing them to remain undetected. I used obfs4 to obfuscate HTTPS proxy connections and a full speed of 2-3 MBytes/s was achieved.
The problem is that when I obfuscate Softether vpn connections by wrapping them inside obfs4 connections, the speed is still low (close to the same speed obtained from direct Softether connections, or probably lower). I need to know what causes this different behavior, while the obfuscation layer is working well in one case, but not in the other.
Maybe I should mention that obfuscation of Softether (SE) using obfs4 is not a straightforward task and requires modifying the routing tables in my case. This is because when direct SE connections are made by the client to a non-local host, the routing tables are automatically modified by the client, such that the default gateways are removed, and a routing item is added to the table to allow SE connections communicate with the server's IP address. However, this is not the case for local connections, and the routing table remains unmodified. Since I'm wrapping the SE connections using an Obfs4 client running locally, SE believes it's making local connections and does not change the routing table. So I manually remove the default gateways and add a routing address to the table. I'm almost certain that this process is performed successfully, but I still need to doubt it as a factor effecting my situation overall.
I know I may have not been very thorough in explaining the problem, so please let me know if you need any further information.
Thank you.
