12 necessary tools for network engineers

Hello, everyone ! I'm BOGO !

---

1EVE-NG ：

EVE-NG（ Full name Emulated Virtual Environment - NextGeneration）, Following Unetlab 1.0 After Unetlab Of 2.0 The new version , Changed the name , The original name is UnifiedNetworking Lab Unified network laboratory . I think the name change is very reasonable , This simulator can not only simulate network devices , You can also run all virtual machines . Theoretically , As long as the virtual disk format of the virtual machine can be converted to qcow2 Can be in EVE-NG Up operation . therefore ,EVE-NG It can be regarded as a simulated virtual environment .

EVE-NG It has more advantages in interaction mode , And GNS3 As like as an apple is to an oyster .GNS3 It's more like the software users use , Only GNS3 Supported by OS Can be used ; and EVE-NG More like CS Model ,EVE-NG Server side , The client can support http/https Arbitrarily OS.

2、Cisco Packet Tracer：

Cisco Packet Tracer By Cisco A learning aid tool released by the company , Design for beginners of Cisco network course 、 To configure 、 Network troubleshooting provides a network simulation environment . Users can directly use drag method to establish network topology on the graphical user interface of the software , It can also provide the detailed processing process of data packets traveling in the network , Observe the real-time operation of the network . You can learn IOS Configuration of 、 Exercise troubleshooting ability .

3、GNS3 Simulator ：

This is a flexible Cisco simulator , You can run real through real images IOS System , And it is flexible in packet capturing and bridging . Official website ：https://www.gns3.com/; At present, the version of the official website has been updated to 2.2.28; GNS3 Allow in Windows、Linux Simulation on the system IOSs, The supported router platforms 、 Firewall platform (PIX) The types are very rich . By configuring the EtherSwitch card , You can also simulate the switch platform supported by the card .

4、QuickPing:

Fast Ping Tools , Batch test a certain address segment IP Address boot status , And use different colors to represent the IP Are you using , It can be displayed in both tabular and graphical forms . The graphical interface is very intuitive , And you can export the list , The software is very small , You can quickly know which hosts in the network segment have been turned on ,Ping Successful shows different colors . Open software Very clean The total volume is less than 1M. Choose to ping Of IP paragraph Just start at , Very fast . It can be viewed graphically or in a list , More intuitive . Green represents IP The address is occupied . Bright green represents this machine . You can also directly view various information of online devices . This software is suitable for the tedious task tool people in the computer room .

5、 Kelai network analysis system ：

Kelaiyu 2001 First released in 2004 CSNAS, It is a product that has been selected as 《 The best technology products in the world 》 Software for , Power division won Gartner NPMD Magic Quadrant “ visionary ” The title of , It is also an important part of Kelai's business performance management solution , It also has users all over the world , Millions of people are working 、 Used in learning “ Ivy ” product .

Kelai network analysis system is a network fault analysis system 、 Digital security forensics 、 Protocol analysis and learning “ tool ”. It does not require complex deployment work , When you need network traffic analysis , It can be directly installed on your accompanying computer , Whether fixed nodes are used , It is still a temporary inspection demand , Can be flexible 、 Effectively help users solve practical problems in network performance and security .

6、Wireshark：

Wireshark（ The predecessor Ethereal） Is a network packet analysis tool . This tool is mainly used to capture network packets , And automatically parse packets , Display packet details for the user , For users to analyze data packets . It can run in Windows and Linux On the operating system .

7、UltraEdit：

UltraEdit It's one in Windows The very famous text editor in the system ,UltraEdit about IT For procedural apes , It's even more necessary , have access to UltraEdit Edit profile 、 see 16 Base file 、 Code highlighting and so on , useful .

8、SecureCRT：

How many people still use telnet To connect the switch ？ When there are hundreds of switches , Do you still need to keep one IP Address list ？SecureCRT It's a support SSH（SSH1 and SSH2） The terminal emulator , To put it simply Windows Log in UNIX or Linux Software of server host , The advantage is that you can create more than one at a time Tab Page, Connecting multiple remote hosts .SecureFX It's for secure transfer of files , Its advantage lies in the visual interface , Display the directory structure of local host and remote host in tree structure . The transfer of files can be manually dragged without the use of commands . Use SecureCRT It can be solved perfectly .

9、BatchCmdGen：

Batch command generation software is a small software that can generate batch commands , Designed to help network engineers debug switches 、 Routers and other devices . Support parameter repetition and loop , Generate configuration scripts ; Support customization 8 Parameters ; It is suitable for generating configuration scripts for multiple interfaces when configuring switches .

10、Kiwi Syslog：

According to the requirements of the third level of national insurance , Switch 、 Various devices such as servers are required to save logs , Moreover, the logs shall be saved to a dedicated log server . Use Kiwi Syslog The software can easily set up a log server . At the switch 、 After the server is configured , All log information is summarized to the log server , It is very convenient to query the log information of all devices .

11、NetFlow：

NetFlow It is about the software of network monitoring function （ Prefer to manage network performance ）. It is often used to collect information about entering and leaving the network interface IP Number of packets and information , It was first developed by Cisco , Most of them are used in routers, switches and other products . Network workers can know the source and destination of packets through it , Types of Internet services , And the causes of network congestion , It's pretty easy to use , There are also many alternatives to software , such as snmp.

12、IT Documentation ： Language sparrow

In our daily work and study , Need a long-term documentation tool , Recently, I prefer to talk to birds , It is very convenient to use it as a learning note and document arrangement . There is no charge for personal space use ; It is very convenient to review your study notes later , You can insert code blocks , We are very convenient to use and online , Log in and use .

Of course, as a network engineer , Learn to use various tools and software flexibly , In order to achieve twice the result with half the effort . Except for the above 12 Software tools , There are many kinds of tools and software , unremittingly 、 Keep learning . Never tire of learning , knowledge has no limit , Learn and know . True knowledge comes from practice , How to participate in 、 Do more , Test and demonstrate what you have learned in practice . Learn to sum up and accumulate , Communicate more with experienced leaders , Don't make things behind closed doors .