0

I have a RedHat 7 server where we allow a few ports but one of them is insecure I would like to use firewall-cmd to lock that port down to only allow 5 IPs to access it. Do I need to make a new zone for just that port?

Brill
  • 45
  • 1
  • 4

2 Answers2

0

Not exactly: You make a new zone for the source IP addresses. Then you allow that port in the new zone.

Michael Hampton
  • 237,123
  • 42
  • 477
  • 940
0

First you must sure you can access , via another way in case you do a mistake .

Add you 5 fives rules 

firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="AA.BB.CCC.DDD/32" service name="ssh" log prefix="ssh" level="info" accept'
firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="AA.BB.CCC.DDD/32" service name="ssh" log prefix="ssh" level="info" accept'

after 

firewall-cmd --complete-reload

check 

firewall-cmd --list-all-zones

remove access to port 22 , and service ssh 

firewall-cmd --permanent --zone=public --remove-port=22/tcp
firewall-cmd --permanent --zone=public --remove-service=ssh
EchoMike444
  • 449
  • 1
  • 3
  • 6