i searched around and i found 2 more people having this problem.
if i install csf, hours later my server goes down.
but if i uninstall it, it never goes down.
3.10 making server offline/crash?
I have never seen or heard of iptables crashing a server after a period of hours. There's no particular reason why iptables would have any problems on a real server running an OS vendor kernel. If you are unable to access the server, it's likely to be one of:
1. You've blocked yourself in the firewall (check /var/log/lfd.log)
2. You're using a monolithic kernel that isn't correctly configured for iptables (e.g. on a VPS or other type of non-OS vendor kernel)
3. The server has run out of resources for iptables (usually memory and/or numiptent on VPS servers)
4. You've broken the csf configuration by making changes to the default csf configuration file. For example, making changes to ETH_DEV when it ought to be left blank
1. You've blocked yourself in the firewall (check /var/log/lfd.log)
2. You're using a monolithic kernel that isn't correctly configured for iptables (e.g. on a VPS or other type of non-OS vendor kernel)
3. The server has run out of resources for iptables (usually memory and/or numiptent on VPS servers)
4. You've broken the csf configuration by making changes to the default csf configuration file. For example, making changes to ETH_DEV when it ought to be left blank