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A comment on Deprecate 0.0.0.0 for Private Network Access. Parent comment

Re:Deprecate 0.0.0.0 for Private Network Access by binwiederhier on Wednesday August 07, 2024 @03:34PM (#41184572)
Well, this was a surprise to me too, but apparently Linux does this:

   $ ping 0.0.0.0
   PING 0.0.0.0 (127.0.0.1) 56(84) bytes of data.
   64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.028 ms
   64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.056 ms
   64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.105 ms
   ...

   $ nc 0.0.0.0 22  
   SSH-2.0-OpenSSH_8.9p1 Ubuntu-3ubuntu0.10
   ...
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Re:Deprecate 0.0.0.0 for Private Network Access by focusedone on Wednesday August 07, 2024 @05:42PM (#41185894)
ping 0 works too. Kinda fun.
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Re:Deprecate 0.0.0.0 for Private Network Access by mh0pe on Friday August 09, 2024 @12:56AM (#41198884)
Fun fact, ping 0 works because 0 is the IP decimal notation of 0.0.0.0. One of my favorite age-old WAF bypass since it doesn't match octet notation regexes that are often in place.
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