Opened 3 years ago

#18624 new defect

Please consider adding novj to /etc/ppp/options.pptp by default

Reported by: patrakov Owned by: developers
Priority: normal Milestone:
Component: packages Version: Trunk
Keywords: Cc:


Van Jacobson TCP/IP header compression (RFC1144) inherently relies on the fact that the sender and the receiver of PPP frames see exactly the same stream of data. However, with PPTP on lossy networks, this is not the case. Result (when running youtube-dl on the PC, observed in the wild with SwissVPN):

_ssl.c:1429: error:1408F119:SSL routines:SSL3_GET_RECORD:decryption failed or bad record mac

As VJ compression is inherently incompatible with pptp, I suggest explicitly disabling it:


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