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lambdafunc / cisco-ios-image-for-gns3.md
Last active August 19, 2025 22:28 — forked from takyon12/cisco-ios-image-for-gns3.md
Cisco IOS Image for GNS3

Download FREE Cisco IOS image for GNS3

Hi dear all, that’s really a great to share my hard work with you , After a lots of hit in Google I finally found trick to search Cisco IOS in free of course. So without talking much here are the link where you can free download Cisco ios image and you can upload or use this ios to the router and as well as in GNS3.

Small Collection of IOS Images.

  • ftp://ftp.unikon-ua.net/pub/Cisco/IOS/

{Updated}Big Collection of IOS Images (Almost All Cisco IOS Images)

  • ftp://62.117.115.92/upload/ios/

Tcpdump

Tcpdump is a commandline tool that is used to dump traffic on a network. This tool comes in hand when you want to analyse network captures within the command line. Basically it can do most of the wireshark job.

NOTE This guide might not be complete it just serve as a reference to me.

Additional Note & Reference

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lambdafunc / System Design.md
Created December 29, 2017 19:02 — forked from vasanthk/System Design.md
System Design Cheatsheet

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

  1. Clarify and agree on the scope of the system
  • User cases (description of sequences of events that, taken together, lead to a system doing something useful)
    • Who is going to use it?
    • How are they going to use it?