Difference between revisions of "Firewall Management in Linux"

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[[Category:Linux]]
 
[[Category:Linux]]
 
'''Please note that ports 5432 and 54321:54330 provide access to the database and can be omitted.'''
 
'''Please note that ports 5432 and 54321:54330 provide access to the database and can be omitted.'''
Iptables
+
 
 +
Rules For '''Iptables'''
 
  iptables -A INPUT -p tcp --dport 54321:54330 -j ACCEPT
 
  iptables -A INPUT -p tcp --dport 54321:54330 -j ACCEPT
 
  iptables -A INPUT -p tcp --dport 5432 -j ACCEPT
 
  iptables -A INPUT -p tcp --dport 5432 -j ACCEPT
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  /etc/init.d/iptables save
 
  /etc/init.d/iptables save
  
For firewalld
+
Rules For '''Firewalld'''
 
  firewall-cmd --zone=public --permanent --add-port=54321-54330/tcp
 
  firewall-cmd --zone=public --permanent --add-port=54321-54330/tcp
 
  firewall-cmd --zone=public --permanent --add-port=5432/tcp
 
  firewall-cmd --zone=public --permanent --add-port=5432/tcp

Revision as of 11:14, 3 November 2021

Please note that ports 5432 and 54321:54330 provide access to the database and can be omitted.

Rules For Iptables

iptables -A INPUT -p tcp --dport 54321:54330 -j ACCEPT
iptables -A INPUT -p tcp --dport 5432 -j ACCEPT
iptables -A INPUT -p udp --dport 161 -j ACCEPT
iptables -A INPUT -p udp --dport 162 -j ACCEPT
iptables -A INPUT -p udp --dport 1812 -j ACCEPT
iptables -A INPUT -p udp --dport 1813 -j ACCEPT
iptables -A INPUT -p udp --dport 2055 -j ACCEPT
iptables -A INPUT -p udp --dport 53 -j ACCEPT
iptables -A INPUT -p udp --dport 514 -j ACCEPT
iptables -A INPUT -p udp --dport 1645 -j ACCEPT
iptables -A INPUT -p udp --dport 2050:2060 -j ACCEPT
iptables -A INPUT -p udp --dport 510:520 -j ACCEPT
iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -p tcp --dport 7902 -j ACCEPT
iptables -A INPUT -p tcp --dport 8902 -j ACCEPT
iptables -D INPUT -j REJECT --reject-with icmp-host-prohibited
/etc/init.d/iptables save
iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited
/etc/init.d/iptables save

Rules For Firewalld

firewall-cmd --zone=public --permanent --add-port=54321-54330/tcp
firewall-cmd --zone=public --permanent --add-port=5432/tcp
firewall-cmd --zone=public --permanent --add-port=5000/udp
firewall-cmd --zone=public --permanent --add-port=161/udp
firewall-cmd --zone=public --permanent --add-port=162/udp
firewall-cmd --zone=public --permanent --add-port=1812/udp
firewall-cmd --zone=public --permanent --add-port=1813/udp
firewall-cmd --zone=public --permanent --add-port=2055/udp
firewall-cmd --zone=public --permanent --add-port=53/udp
firewall-cmd --zone=public --permanent --add-port=514/udp
firewall-cmd --zone=public --permanent --add-port=1645/udp
firewall-cmd --zone=public --permanent --add-port=2050-2060/udp
firewall-cmd --zone=public --permanent --add-port=510-520/udp
firewall-cmd --zone=public --permanent --add-port=22/tcp
firewall-cmd --zone=public --permanent --add-port=7902/tcp
firewall-cmd --zone=public --permanent --add-port=8902/tcp
firewall-cmd --reload