Cloud Packet
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Shakib Shaygan

12 posts Berlin
Network Engineer with 5 years of work experience in Service Provider and Data Centre networks. Expert in a wide variety networking protocol.

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

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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

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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

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Virtual Extensible LAN (VXLAN) Cheat Sheet Released

Here is the Cisco VXLAN Cheat Sheet on Nexus platform, which is a network virtualization technology that attempts to improve the scalability problems associated with large cloud computing deployments.

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

Click here to download VXLAN Cheat Sheet

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Virtual PortChannel (vPC) Cheat Sheet Released

Here is the Cisco Virtual PortChannel (vPC) Cheat Sheet on Nexus platform, which allows links that are physically connected to two different Cisco Nexus 5K/7K Series devices to appear as a single PortChannel to a third device.

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

Click here to download vPC Cheat Sheet

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