Public bug reported:
See upstream bug reports:
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=968942
- https://community.openvpn.net/openvpn/ticket/1208
Openvpn < 2.4.8 opens the TCP port with a too small backlog, and on kernels >
4.3 that leads to incoming connections being dropped. This kernel message is a
symptom:
TCP: request_sock_TCP: Possible SYN flooding on port 1194. Dropping
request. Check SNMP counters.
I experienced this on a Bionic 18.04.5 (after having upgraded from Xenial) with
openvpn 2.4.4-2ubuntu1.5
Fixed upstream.
** Affects: openvpn (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1934781
Title:
TCP socket backlog set too low ("request_sock_TCP: Possible SYN
flooding on port ...")
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openvpn/+bug/1934781/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
