As a network engineer, to build experimental environment through the simulator is essential, mainstream network simulator has the following paragraphs: Packet Tracer is out of a Cisco simulator can only simulate Cisco's own equipment, because the This software is a pure software simulation, so many of the features of Cisco equipment simulation is not very good, can cope with the CCNA test, just for entry, and then more complex environment, we are looking for other emulator. Dynamips is a virtualization-based simulator for simulating Cisco routers, China Great God - Xiaofan Xiaofan simulator interface developed by the addition of GUI users, this section until now in the simulator industry is still very high network usage can make a router simulator with real or virtual systems in vmware bridged together by bridging PC and powerful. There is also a GNS3, this is a relatively perfect a Cisco simulator can also be true ios system run by real mirror, and in the analysis of packet capture operation is particularly convenient.
Then tell us about eve-ng simulator, when the predecessor of this section simulator Unetlab1.0, it can not only simulate network device, you can also run a virtual machine, in theory, as long as able to convert virtual disk you want to run for the qcow2 format, it can run in the eve-ng. eve-ng combines dynamips IOL and KVM, when it should be noted that the depth of customization Ubuntu operating system, it needs to know you want to get along some Linux basics. Engage in technology like this, life-long learning, can not tell what time we should use other technical knowledge, my knowledge of Linux is through the senior year "in respect so learn Linux" book learning, it is suitable for novice to use, it was also but in this book the official online learning, and now the book has been published on the market.
eve-ng into the community edition and pro edition, free community edition should have been enough most experimental use, you can also understand the pro version of the large domestic god crack to install online. eve-ng can be mounted by installing the eve-ng package mounted on the associated version ubuntu-sever 16 is mounted, may be mounted directly to the eve-ng linux mirror, more convenient way is to use ova introduced vmware installation. EVE-NG can be downloaded from the official website of ova to the virtual machine file format, you can import or waiting VMware Workstation Pro VSPHERE virtual machine, the default root password is eve. EVE-NG has more advantages in the interactive mode, with GNS3 different. GNS3 is more like the software used by the user, only GNS3 supports OS to use; and EVE-NG is more like CS model, EVE-NG is the server, the client can support http / https any OS. Such as those based ubuntu installation Note the following points:
1. Sed -e -i 'S / GRUB_CMDLINE_LINUX_DEFAULT =. * / GRUB_CMDLINE_LINUX_DEFAULT = "0 noquiet net.ifnames =" /' / etc / default / GRUB , use this command allows the card to ethX named
-GRUB Update , update grub, and change the name of the NIC in the configuration file / etc / network / interfaces for eth0
2. Installation eve-ng command follows:
wget -O - http://www.eve-ng.net/repo/[email protected] | sudo gpt- key add - // get key to the system
add-apt-repository "deb [ arch = amd64] http://www.eve-ng.net/repo xenial main" // Add Update Source
aptitude update
aptitude install eve-of
After installation is complete, reboot the system, it will re-enter eve-ng configuration interface, ntp server can be changed pool.ntp.org , NIC recommended settings for the virtual machine nat mode, setting reboot again after completion, when three interface eve there are letters shading the installation was successful, but if after a long time did not enter the system, it is necessary to check whether the correct card mode, whether to open the dhcp mode and restart again.
eve-ng can import three kinds of image files, dynamips, IOL, QEMU, uploading these three documents are different, first of all to build a good ftp server so that the mirror on the host can be reached eve-ng, it is recommended to use WinSCP more convenient to use. After connecting to the eve-ng through SecureCRT, Dynamips upload / opt / unetlab / addons / dynamips folder, IOL upload: / opt / unetlab / addons / IOL / bin in, QEMU upload: / opt / unetlab / addons / qemu in. Note also IOL file and import iourc CiscoIOUKeygen.py two files and generate a string using python CiscoIOUKeygen.py command, stick to iourc file in order to work properly. QEMU is more complicated because each device image and folder names are specified, concrete can be viewed in eve-ng official website. After these three have to use the file upload is complete / opt / unetlab / wrappers / unl_wrapper -a fixpermissions this command to modify the permissions that, after upload good can be normal use. Use the eve-ng in view ifconfig eth0 ip address, the address to open the browser in the host machine, the default account password is admin, eve. Then you can start to do the experiment.
If you need to capture and use SecureCRT, you need to do some operations, the browser address bar plus /files/windows.zip after the ip address eve-ng corresponding to download the file, edit wireshark_wrapper.bat, username and password to confirm and then change wireshark program path, and then the entire UNetLab folder into the C: \ program files, run win7_64bit_wireshark.reg registered, so that you can right-click port to catch the point capture option package on the device, crt be normal use.
More than a brief introduction to the eve-ng installation and use, but this section of the simulator is still a lot of tips, such as a virtual network devices or systems bridged to the host or by other physical connection to the real host of the network card network, or their own customized image. Some want to use these features require Linux knowledge, I can learn from the above recommended books.