Networking and Firewalls

The following recipes will be covered in this chapter:

• Determining our network configuration
• More examples of using the IP suite
• Adding and configuring network interfaces
• Modern domain name resolution on Linux
• Configuring NTP and the problems we face
• Listing firewall rules on the command line
• Adding firewall rules on the command line
• Determining the running services and ports in use
• Debugging with iftop
• Round-up-firewalls and networks