Dont know if anyone else has ran to anything similar, but we have intermittent fail2ban issues where it allows and denies the same ip at a fast enough pace to more or less kill the server.
1687891644: /sbin/iptables -w5 -W10000 -D fpbxregistrations -s 10.77.5.41/32 -j fpbxknownreg
1687891644: /sbin/iptables -w5 -W10000 -D fpbxregistrations -s 10.77.5.39/32 -j fpbxknownreg
1687891644: /sbin/iptables -w5 -W10000 -D fpbxregistrations -s 10.77.5.36/32 -j fpbxknownreg
1687891644: /sbin/iptables -w5 -W10000 -D fpbxregistrations -s 10.77.5.76/32 -j fpbxknownreg
1687891680: /sbin/iptables -w5 -W10000 -A fpbxregistrations -s 10.77.5.41/32 -j fpbxknownreg
1687891680: /sbin/iptables -w5 -W10000 -A fpbxregistrations -s 10.77.5.39/32 -j fpbxknownreg
1687891680: /sbin/iptables -w5 -W10000 -A fpbxregistrations -s 10.77.5.36/32 -j fpbxknownreg
1687891680: /sbin/iptables -w5 -W10000 -A fpbxregistrations -s 10.77.5.76/32 -j fpbxknownreg
We are running FreePBX 16.0.40.4, running Asterisk 20.2.1.
We have about a dozen server instances running that are not having this type of issue, so unfortunately this is a bit of a headscratcher.
Any assistance would be appreciated.
Thanks,