I’ve been trying to troubleshoot IPsec tunnel speeds on a Sophos to Fortigate connection. From the Sophos end, sending data to the Fortigate end will use the full bandwidth. However, copying data from the Fortigate end to the https://19216801.onl/ Sophos end will only get around 10% of the full bandwidth.
I create test IPsec tunnels from that Sophos to a test Sophos in Azure and it got full bandwidth both ways. But creating a tunnel from the fortigate to the test Sophos in Azure gave the same speed issue when copying data from the fortigate side. The fortigate doesn’t have any packet inspection turned on, and when someone uses the forticlient (fortigate SSL vpn client) they don’t have the same transfer speed issues.
Any ideas?
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