alt Hacker News> Discovery: Sep 20, 2026
Shit, do we also have to tell them about IP-over-ICMP?
https://stuff.mit.edu/afs/sipb/user/golem/tmp/ptunnel-0.61.o...
> Last updated: May 26. 2005
gdb, OpenAI's president was at MIT circa then.
Replies
itintheory • today at 12:01 AM
Seems like this requires operating a proxy somewhere. In TFA it seems like all they needed was a DNS client, but I'm not at all clear how that could work. I'm definitely curious about the technique though.
That seems like the sort of thing that would have had a lot of HN attention over the years, but I guess not:
Ping Tunnel – Send TCP Traffic over ICMP (2011) - https://news.ycombinator.com/item?id=21009598 - Sept 2019 (1 comment)
https://news.ycombinator.com/item?id=512416 (March 2009)
Ping Tunnel - Send TCP traffic over ICMP - https://news.ycombinator.com/item?id=90196 - Dec 2007 (1 comment)