centos 7 port open
firewall-cmd --zone=public --add-port=55555/tcp --permanent firewall-cmd --reload
centos 7 port open
firewall-cmd --zone=public --add-port=55555/tcp --permanent firewall-cmd --reload
open port 22 centos 7
##By firewall-add port 22 firewall-cmd --zone=public --add-port=22/tcp --permanent firewall-cmd --reload #check if port 22 open iptables-save | grep 22 #Remove port 22 firewall-cmd --zone=public --remove-port=22/tcp --permanent firewall-cmd --reload ##By iptables= add port 22 service iptables status service iptables start chkconfig --list iptables chkconfig iptables on iptables -L #add port iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT #delete port iptables -D INPUT -i eth0 -p tcp --dport 22 -j ACCEPT #check if port 22 open iptables-save | grep 22
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