SSH & OpenVPN perform poorly
Keywords: dscp, iptables, ssh, openvpn, network
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Special services like ssh and openvpn appear to be really slow while everything else works ok.
Above software does not set a DSCP value. This might be problematic in networks with some sort of ToS routing/queueing. This can be fixed by assigning a useful DSCP afterwards using iptables:
iptables -I OUTPUT 1 -t mangle -m dscp --dscp 0 -j DSCP --set-dscp 0x04
http://iptables-tutorial.frozentux.net/iptables-tutorial.html
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