Linux iptables redirect tcp port

2019-12-08 19:52

Jun 26, 2014 Redirect port with iptables. Discussion in 'Linux Networking' started by Peter Penzov, Jun 24, 2014. So I need to configure the router to receive traffic from my laptop on port 25 and redirect this traffic to port 1521. Can you tell me what is the correct way to configure the iptables for this case? but for my linux box I would haveA PREROUTING t nat i eth0 p tcp m tcp dport 80 j REDIRECT toports 8080 Note the m tcp is added. While p tcp matches the protocol of the rule or of the packet to check, m tcp explicitly tells IPTables to match a TCP packet. It seems confusing, but from all I know, p tcp needs to be paired with m tcp when port specific rules are linux iptables redirect tcp port

I need to do redirect port 443 on all interfaces to 8080 on one interface using iptables on a box with 2 NICs. I also need to block pretty much anything else on those interfaces. Redirect ports with iptables

[root @ kerneltalks# iptables t nat A PREROUTING i eth0 p tcp dport 80 j REDIRECT toport 8080 If you have interface name other than eth0 then you need to edit your command accordingly. You can even add your source and destinations as well in same command using src and dst options. Port forwarding on Linux without iptables? Ask Question 33. 18. I have a Linux VPS I'm looking for other ways how to do it. I know I can forward port using openssh, but I need to forward 20 different ports, tcp and udp so this is not an option. This redirect all TCP connections on port 80 to www. yourdomain. org port 8080 TCP. share linux iptables redirect tcp port Can we see packet, means redirection from port 80 to port 3128 or redirect of confiugred ports in iptables rule. My question is that, is there any tool or utility, by use of it we can see how packet handle by iptables.

Similar to transparent proxying. I want to catch anything trying to leave my system on port 80 and redirect it to a remote Stack Exchange Network. How can I redirect outbound traffic to port 80 using iptables locally? sudo iptables t nat A OUTPUT p tcp dport 80 j DNAT linux iptables redirect tcp port I've been reading on many sites how to use iptables to reroute one port to another in Linux. For instance, rerouting port 80 to 8080 would look like this iptables t nat A PREROUTING p tcp Stack Exchange Network. Once I set iptables to reroute a port, how do I undo it? The iptables based Linux Firewall is not all about blocking ports (the filter table). Ports can be redirected if required achieved via the nat table. The filter table is the default table with iptables so we do not need to make reference to the table name. However, port redirection is # iptables t nat A POSTROUTING o eth0 j MASQUERADE Port Redirection. 1)To redirect external 80 port traffic to 3128 port. # iptables t nat A PREROUTING i eth1 p tcp dport 80 j REDIRECT toport 3128. 2)To redirect external rdp port traffic to any local systems rdp port.

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