I have 2 CentOS servers 82.201.195.123 & 62.139.61.84
I want to deny all ssh logins on port 22 on (62.139.61.84) from any host
except from (82.201.195.123)
Can anybody tell me such iptables rules to write in /etc/sysconfig/iptables
Currently, im using the following rules (on 62.139.61.84)
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -i eth1 -j ACCEPT
-A RH-Firewall-1-INPUT -i eth0 -s 82.201.195.123 -j ACCEPT
-A RH-Firewall-1-INPUT -m tcp -p tcp --dport 22 -j REJECT
-A RH-Firewall-1-INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -i eth0 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT
iptables is a first-match wins firewall. The rule above that mentions the
82.201.195.123 will accept all traffic from that IP address. The rule
below it seems a little vague. I might change that to:
-A RH-Firewall-1-INPUT -m tcp -p tcp -i eth0 -d 62.139.61.84 --dport 22 -j
REJECT
Hope this helps.
Barry
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