Iptables port forwarding requests to localhost Iptables is a user-space utility program that allows a system administrator to configure the IP packet filter rules of the Linux kernel firewall, implemented as different Netfilter modules. Let’s take this scenario. You have an app which binds locally on 127.0.0.1 on port let’s say 8080. And simply for …
Recently I started to play a little bit with GNS3. I managed quite easy to create a virtual cisco router on GNS3 and connect from console to that router and do the initial basic setup of the router. And then it hit me! Is there any way to make the virtual cisco router inside GNS …
nat on Mac OSX Yosemite (the last OS version from Apple (that was the latest OS from Apple when this post was written) is not that simple to configure since natd binary (used for network address translation rules) or ipfw (used to create firewall rules on Mac OSX) are missing completely from the operating system. There were …