Shell/Bash: open port 22 centos 7 Example

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Shell/Bash Example: This is the "open port 22 centos 7" Example. compiled from many sources on the internet by SimpleTutorials.org

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


* Summary: This "open port 22 centos 7" Shell/Bash Example is compiled from the internet. If you have any questions, please leave a comment. Thank you!

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