Privateinternetaccess or airvpn5/16/2023 ![]() There is some controversy on the appropriate method of handling packet reordering at the security layer. If you run OpenVPN at -verb 4, you will see the message "Replay-window backtrack occurred " every time the maximum sequence number backtrack seen thus far increases. Satellite links in particular often require this. If you are using a network link with a large pipeline (meaning that the product of bandwidth and latency is high), you may want to use a larger value for n. (c) If a packet arrives out of order, it will only be accepted if it arrives no later than t seconds after any packet containing a higher sequence number. (b) If a packet arrives out of order, it will only be accepted if the difference between its sequence number and the highest sequence number received so far is less than n. (a) The packet cannot be a replay (unless -no-replay is specified, which disables replay protection altogether). Of-order packet sequence, and will deliver such packets in the same order they were received to the TCP/IP protocol stack, provided they satisfy several constraints. Because OpenVPN, like IPSec, is emulating the physical network layer, it will accept an out. When OpenVPN tunnels IP packets over UDP, there is the possibility that packets might be dropped or delivered out of order. when either -proto udp is specified, or no -proto option is specified. ![]() This option is only relevant in UDP mode, i.e. Use a replay protection sliding-window of size n and a time window of t seconds.īy default n is 64 (the IPSec default) and t is 15 seconds. This is from the man page: -replay-window n is this normal?Īre you running this on openvpn or the PIA client? If it's openvpn you could try playing around with the replay-window option and see if increasing it helps. if i disable data encrytion and data auth while using tcp, i have no connection issues and my log file is not being spammed. ![]() If i use tcp instead of udp, i dont get this error in the log file anymore but my connection keeps dropping. My settings for the vpn are udp, remote port is auto data encryption is aes-128, data auth is SHA1, and handshake is RSA-2048. not sure if that speed that im loosing is because of that error im getting or if its just the overhead i have to accept from using a vpn? speeds were hitting 3.2 megabytes down but with the vpn off i can hit the 35 down my isp provides easy. was testing out the speeds of the vpn with a ubuntu ISO torrent. i have a 35 down 5 up connection and i live in the middle of know where so it stays at this speed 99% of the time. Right now i use BitTorrent but i've also happens with deluge. ![]() This happen's only when using a BitTorrent client. tried Airvpn and was pretty nice but speeds were not as good as PIA is giving me.īeing that PIA uses Openvpn, (as well as airvpn) i have been getting large log files with the line being spammedĪuthenticate/Decrypt packet error: bad packet ID (may be a replay): - see the man page entry for -no-replay and -replay-window for more info or silence this warning with -mute-replay-warnings ![]()
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