On 16/07/2020 16:48, Kaushal Shriyan wrote: > Hi, > > I am running CentOS Linux release 8.2.2004 (Core) on a remote server. I am > running the below iptables command to allow SSH port 22 from a specific > source IP 219.91.200.59 > > iptables -A INPUT -m tcp -p tcp -s 219.91.200.59 --dport 22 -j ACCEPT >> service iptables save > > > The above iptables ruleset is not working and I am still able to connect > from the internet to SSH port 22. I look forward to hearing from you and > thanks in advance. > > Best Regards, > > Kaushal EL8 does not use iptables by default - it's been replaced with nftables.