Carla Schroder: Top 10 tips for Linux Network Management

As early as Carla Schroder wrote the first book "Linux cookbook", she expected to write a "Linux networking cookbook" as her sister-in-law, which is as natural as peanut butter and chocolate.

The following are the top 10 tips she has written for those who want to become excellent Linux network administrators-regardless of your current level, they are very useful suggestions. Except for the first one, there are no successive orders:

1. Study and master the structure of TCP/IP packets, UDP datagram and ICMP messages.

2. Understand the details about how to establish, maintain, and terminate a network connection.

3. Study IPv6. Sooner or later, IPv4 will be replaced by IPv6.

4. Understand how Nat works and how to convert data of different protocols. Problems arising during Nat are the source of many network problems.

5. Make things as simple as possible. Do not add unnecessary complexity to the stress of your computer geeks.

6. fully familiar with OpenSSH and OpenSSL, and how to create and maintain a public key infrastructure (PKI, public
Key Infrastructure ).

7. Wireless Networks are rapidly changing and upgrading. Linux now has a large number of utility programs for roaming customers, security and wireless network deployment.

8. Learn how to troubleshoot and track network problems. You can find many amazing things in network and line transmission. In non-encrypted transmission, you can see all the data, and even encrypted transmission has a plaintext data header that you can read.

9. avoid locking in any cost and expenditure items. You do not need to lock in any specific vendor or a fixed range of proprietary protocols and standards.

10. Linux's network functions are very advanced and powerful, and Linux is constantly providing various features, suitable for a variety of devices from embedded routers to large complex Internet gateways. It includes a truly secure cross-platform VPN, and many different remote secure access applications. Don't believe that you can still get security on the platform that has been confirmed to be extremely insecure-use Linux.