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Hi, I'm trying SSL VPN and get really bad throughput (about 1-2 Mbit/s). Normal untunneled traffic reaches about 60-70 Mbit/s. Here is my pcap data:

I am connecting from a client ( to a server ( through a gateway. I'm aware of the general problems with SSL-VPN as compared to e.g. L2TP or PPTP (ie specifically, running TCP over TCP), but I hope someone can give some feedback on whether my pcap data contains anything obvious. I can see there are fast retransmissions but I'm not sure if they would contribute to the slow throughput as they are not that many. There are quite a few Dup ACK but same thing here - I don't know if these can explain the slow speed. What about MTU? But I don't know what should be the right value here.

Am I looking at the wrong things? What should I be looking at?

Any comments or ideas are greatly appreciated!

asked 19 Feb '16, 01:13

cepheidlight's gravatar image

accept rate: 0%

edited 19 Feb '16, 01:16

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question asked: 19 Feb '16, 01:13

question was seen: 814 times

last updated: 19 Feb '16, 01:16

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