[CentOS] Forward http traffic
Nikolaos Milas
nmilas at noa.grTue Jan 7 12:28:33 UTC 2014
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Hello, On CentOS 6.5 x86_64 I have (/etc/sysconfig/iptables): *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 -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -s 10.10.10.0/24 -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -s 10.10.10.0/24 -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT Now, I want to forward all http traffic coming in from 10.250.250.0/24, at local port 8080, to 2 particular IP Addresses (port 80). Is it enough to prepend (to the above) the following: *nat :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A PREROUTING -s 10.250.250.0/24 -p tcp --dport 8080 -j DNAT --to-destination xxx.xxx.xxx.xxx:80 -A PREROUTING -s 10.250.250.0/24 -p tcp --dport 8080 -j DNAT --to-destination yyy.yyy.yyy.yyy:80 COMMIT ...? Please advise! Thanks in advance, Nick
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