English | Size: 34.38 GB
Genre: eLearning
It’s a network simulator.
With UNetLab, each router runs in its own virtual environment, with all of those virtual environments talking to each other. This gives you the benefit of running a router with only 128MB of RAM, versus having to run a full-fledged virtual GNS3 environment with 4GB or more.
UNetLabv2 is based on:
Docker: controller, routers and lab nodes run inside a Docker container;
Python: no more C, PHP or Bash, only Python 3;
Python-Flask + NGINX implement and expose APIs;
Memcached caches authentication for a better user experience;
Celery + Redis manages asynchronous long tasks in the background;
MariaDB stores all data/user and running labs;
Git stores original labs with a version control;
jQuery + Bootstrap will implement the UI as a single page app;
iptables + Linux bridge allow to connect to just started lab nodes via SSH;
IOL, QEMU and Dynamips run lab nodes.
A UNetLabv2 cluster must have at least one node: it could be a physical or a virtual system. Each UNetLabv2 node run Docker: the first UNetLabv2 node is the master one and it contains a controller and a router, every additional UNetLabv2 node contains a router only. Each UNetLabv2 node run also many lab nodes. Controller, routers and lab nodes are Docker instances.
The controller container:
exposes web UI and APIs to user clients, routers and lab nodes;
receive register requests from routers and lab nodes;
provision and manages lab nodes via routers;
contact lab nodes via Ansible/NAPALM/… via routers;
provides routing table to routers;
can be reached via SSH using port 2222.
The router containers:
register against the controller;
expose Docker Remote API;
expose lab node API;
get routers and routing table from controller;
route lab packets between nodes and routers;
allow reachability between controller and remote lab nodes via OpenVPN.
The node containers:
register against the controller;
run the emulated node (IOL, Dynamips or QEMU);
bind a management interface of emulated note to a local bridge;
route and sNAT/dNAT packets to the management interface of the emulated node;
route packets between the local router and the emulated node for the non-management interfaces;
manage emulated links (up/down).
Because controller and routers knows inside and outside ip addresses; users can deploy UNetLabv2 nodes wherever they want (in the same LAN, in AWS, Google Compute Engine, Azure, behind a firewall…). As the above diagram explains, each UNetLabv2 cluster needs the following ports:
TCP:2222 to connect to the controller via SSH;
TCP:80/443 for HTTP/HTTPS requests to the controller;
TCP:5443 for HTTPS requests to the router;
UDP:5005 for routed packets between different UNetLabv2 nodes;
UDP:1194 for network reachability between the controller and remote lab nodes.
NitroFlare:
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Rapidgator:
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