Port listening on localhost

Author: AbrahamAlgorithm

0x08-networking_basics_2/0-change_your_home_IP

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+# Configures an Ubuntu server as follows:
+#   - localhost resolves to 127.0.0.2
+#   - facebook.com resolves to 8.8.8.8
+
+cp /etc/hosts ~/hosts.new
+sed -i 's/127.*$/127.0.0.2 localhost\n8.8.8.8 facebook.com/' ~/hosts.new
+cp -f ~/hosts.new /etc/hosts

0x08-networking_basics_2/1-show_attached_IPs

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+# Displays all acive IPv4 addresses.
+
+ifconfig | grep -Eo "inet (addr:)?([0-9]*\.){3}[0-9]*" | cut -b 11-

0x08-networking_basics_2/100-port_listening_on_localhost

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+# listens on port 98 on localhost.
+nc -l localhost 98