Iptables Redirect: Difference between revisions
From D3xt3r01.tk
Jump to navigationJump to search
(New page: Useful for NAT-ing stuff... ==Redirecting== iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080 This would redirect anything going out on port 80 to the same ho...) |
mNo edit summary |
||
| (One intermediate revision by the same user not shown) | |||
| Line 15: | Line 15: | ||
This would redirect anything going out on port 80 but to another ip in the internal network on port 8080 | This would redirect anything going out on port 80 but to another ip in the internal network on port 8080 | ||
iptables -A POSTROUTING -s internalip -j SNAT --to-source externalip | iptables -t nat -A POSTROUTING -s internalip -j SNAT --to-source externalip | ||
This would change the source of the packet from the internal ip to external ip | This would change the source of the packet from the internal ip to external ip | ||
iptables -A PREROUTING -d externalip -j DNAT --to-destination internalip | iptables -t nat -A PREROUTING -d externalip -j DNAT --to-destination internalip | ||
This would redirect anything coming to external ip to the internalip | This would redirect anything coming to external ip to the internalip | ||
| Line 27: | Line 27: | ||
[[Category:Linux]] | [[Category:Linux]] | ||
[[Category: | [[Category:Iptables]] | ||
Latest revision as of 20:50, 19 September 2013
Useful for NAT-ing stuff...
Redirecting
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
This would redirect anything going out on port 80 to the same host but on port 8080
iptables -t nat -A OUTPUT -p tcp --dport 80 -j REDIRECT --to-port 8080
This would redirect anything going out on port 80 to port 8080
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination internalip:8080
This would redirect anything going out on port 80 but to another ip in the internal network on port 8080
iptables -t nat -A POSTROUTING -s internalip -j SNAT --to-source externalip
This would change the source of the packet from the internal ip to external ip
iptables -t nat -A PREROUTING -d externalip -j DNAT --to-destination internalip
This would redirect anything coming to external ip to the internalip
Feel free to add -d destinationip ; -s sourceip ; -i interface or -o interface to filter how that rule applies !
