Shakib Shaygan

Author Archives: Shakib Shaygan

Domain Name System Security Extensions (DNSSEC) Cheat Sheet Released

Here is the Cheat Sheet for DNSSEC. Recently vulnerabilities in the DNS were discovered that allow an attacker to hijack this process of looking some one up or looking a site up on the Internet using their name. The purpose of the attack is to take control of the session to, for example, send the user to the hijacker's own deceptive web site for account and password collection.

These vulnerabilities have increased interest in introducing a technology called DNS Security Extensions (DNSSEC) to secure this part of the Internet's infrastructure.

If you found a bug or want new content to be added, email me!

Click here to download DNSSEC Cheat Sheet

Domain Name System (DNS) Cheat Sheet Released

Here is the Cheat Sheet for DNS, an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.cloudpacket.com might translate to 104.27.143.238.

The DNS system is, in fact, its own network. If one DNS server doesn't know how to translate a particular domain name, it asks another one, and so on, until the correct IP address is returned.

If you found a bug or want new content to be added, please report it!

Click here to download DNS Cheat Sheet

Fabric Extension (FEX) Cheat Sheet Released

Here is the Cisco FEX Cheat Sheet on Nexus platform, Fabric Extender (FEX for short) is a companion to a Nexus 5K to 9K switch. The FEX, unlike a traditional switch, has no capability to store a forwarding table or run any control plane protocols. It relies on its parent 5K/6K/7K/9K to perform those functions. As the name implies, the FEX “extends” the fabric (ie, the network) out towards the edge devices that require network connectivity.

If you found a bug or want new content to be added, please report it!

Click here to download FEX Cheat Sheet

Fabric Extension (FEX) Cheat Sheet Released

Here is the Cisco FEX Cheat Sheet on Nexus platform, Fabric Extender (FEX for short) is a companion to a Nexus 5K to 9K switch. The FEX, unlike a traditional switch, has no capability to store a forwarding table or run any control plane protocols. It relies on its parent 5K/6K/7K/9K to perform those functions. As the name implies, the FEX “extends” the fabric (ie, the network) out towards the edge devices that require network connectivity.

If you found a bug or want new content to be added, please report it!

Click here to download FEX Cheat Sheet

Fabricpath Cheat Sheet Released

After spending 4 weeks of rereading the Cisco doc I manage to extract this information and put all the pieces together and come up with this cheat sheet, trust me it's not easy at all. Especially when you should follow certain rules for elements such as color, spacing, font and the explanation.

The source of content goes to mostly Cisco Live & Cisco Validated Designs, but offcoruse it's just an extract of those information.

Please feel free to share your idea, I'm always looking to improve this if I find any other material to add here.

Click here to download Fabricpath Cheat Sheet

Fabricpath Cheat Sheet Released

After spending 4 weeks of rereading the Cisco doc I manage to extract this information and put all the pieces together and come up with this cheat sheet, trust me it's not easy at all. Especially when you should follow certain rules for elements such as color, spacing, font and the explanation.

The source of content goes to mostly Cisco Live & Cisco Validated Designs, but offcoruse it's just an extract of those information.

Please feel free to share your idea, I'm always looking to improve this if I find any other material to add here.

Click here to download Fabricpath Cheat Sheet