what does “dead beef” mean?

Question

What does the word \"dead beef\" mean? I read it from a interview question. It has something to do with ipv6. I figured it could be a random hex number used for examples, li

Answer 1

Since IPv6-Adresses are written in Hex-notation you can use "Hexspeak" (numbers 0-9 and letters a-f) in Adresses.

There are a number of words you can use as valid adresses to better momorize them.

If you ping6 www.facebook.com -n you will get something like "2a03:2880:f01c:601:face:b00c:0:1".

Here are some examples:

• :affe:: (Affe - German for Monkey - seen at a vlan for management board)
• :1bad:babe:: (one bad babe - seen at a smtp-honeypot)
• :badc:ab1e:: (bad cable - seen as subnet for a unsecure vlan)
• :da7a:: (Data - seen for fileservers)
• :d1a1:: (Dial - seen for VPN Dial-In)