Cheat Sheets for System Administrators?

I add my own favorite: Cheat Sheets on PacketLife.com has some very nice ones on network technology topics.

Cheat sheets are in PDF format. You
are welcome to use and redistribute
them as you please, so long as they
remain intact and unmodified.

Currently there are six categories:

  • Protocols: BGP, EIGRP, First Hop Redundancy, IEEE 802.11 Wireless, IEEE 802.1X, IPsec, IPv4 Multicast, IPv6, IS-IS, OSPF, Spanning Tree
  • Applications: tcpdump, Wireshark Display Filters
  • Reference: Common Ports, IP Access Lists, Subnetting
  • Syntax: Markdown, MediaWiki
  • Technologies: MPLS, Quality of Service, VLANs
  • Miscellaneous: Cisco IOS Versions, Physical Terminations

Examples: Common Ports and IPv6 (links to PDF files)

Common Ports Cheat Sheet (PDF)

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