GNS3
From charlesreid1
GNS3 is a virtual network appliance for simulating software-defined networks. This is a cheap way of setting up a big network testbed to prepare for certifications like the CCIE (Cisco Certified Internetwork Expert).
Installing
Download GNS3 from their site (need to register first): https://gns3.com/software
If I understand correctly, you can either run GNS3 on your local machine (standalone), only requiring the GNS3 Mac/Linux installer, or you can run it in tandem with a virtual machine to simplify and standardize the interface, in which case, you need to also have a VMWare/VirtualBox image.
Detailed instructions here. Basically you need to download your OS's installer, and then download the virtual network appliance.
The version numbers of the files should match; for example:
- GNS3-1.5.4.dmg
- GNS3.VM.VirtualBox.1.5.4.zip
Documentation Links
GNS3 virtual machine documentation
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linux networking all the pages for linux networking
Diagnosing network interfaces: Linux/Network Interfaces Connecting to nodes with ssh: Linux/SSH Bridging networks with ssh tunnels: Linux/SSH Linux file server nfs/smb/sshfs: Linux/File Server Samba on linux: Linux/Samba Automounting network shares on linux: Linux/Automount Network Shares Monitoring system resources: Linux/System Monitoring Linux systemd: Linux/Systemd
IP Schema (ipcalc): Linux/IP Schema DHCP Server: Linux/DHCP DNS Server: Linux/DNS NTP Server: Linux/NTP
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