Engineer distributes resume via IPv6 traceroute

Post by ju-st » Fri, Aug 26, 2022, 6:56 PM UTC

verst wrote: post #38

jvdvegt wrote: post #3

I guess the site can only be reached over IPv6? It seems I only have IPv4 :(

That could be a feature if he didn't want to work at companies that don't have a IPv6 network :)

  8    37 ms    36 ms    36 ms  hello [2001:bc8:3eff:c0::1]
  9    32 ms    32 ms    31 ms  My.name.is.Louis.Poinsignon [2001:bc8:3eff:c0::2]
 10    33 ms    32 ms    31 ms  I.am.a.network.and.systems.engineer [2001:bc8:3eff:c0::3]
 11    35 ms    36 ms    35 ms  This.is.my.resume.over.traceroute [2001:bc8:3eff:c0::4]
 12    37 ms    35 ms    36 ms  o---Experience---o [2001:bc8:3eff:c0:ee::]
 13    36 ms    35 ms    35 ms  2021.Apple.Engineer.SF.USA [2001:bc8:3eff:c0:ee::714]
 14    33 ms    34 ms    31 ms  2018.Cloudflare.Engineer.SF.USA [2001:bc8:3eff:c0:ee::cf3]
 15    32 ms    34 ms    33 ms  2017.Cloudflare.Engineer.London.UK [2001:bc8:3eff:c0:ee::cf2]
 16    38 ms    36 ms    35 ms  2016.Cloudflare.Engineer.Intern.SF.USA [2001:bc8:3eff:c0:ee::cf1]
 17    36 ms    35 ms    34 ms  o---Education---o [2001:bc8:3eff:c0:ed::]
 18    36 ms    35 ms    34 ms  2015-2016.DrexelUni.Exchange.CE.Philadelphia.USA [2001:bc8:3eff:c0:ed::1]
 19    37 ms    32 ms    32 ms  2011-2016.UTT.Master.CE.France [2001:bc8:3eff:c0:ed::2]
 20    37 ms    34 ms    35 ms  o---Skills---o [2001:bc8:3eff:c0:51::]
 21    36 ms    36 ms    34 ms  Golang.C.Python [2001:bc8:3eff:c0:51::1]
 22    36 ms    34 ms    36 ms  Networks.Linux.Automation.Kafka.Clickhouse.Kubernetes [2001:bc8:3eff:c0:51::2]
 23    33 ms    33 ms    33 ms  Statistics.Maths [2001:bc8:3eff:c0:51::3]
 24    31 ms    32 ms    31 ms  o---Various---o [2001:bc8:3eff:c0:7a::]
 25    34 ms    35 ms    35 ms  Swimming.Karate.Piano [2001:bc8:3eff:c0:7a::1]
 26    36 ms    34 ms    35 ms  o---Contact---o [2001:bc8:3eff:c0:c0::]
 27    32 ms    34 ms    31 ms  mail.jobs.at.poinsignon.org [2001:bc8:3eff:c0:c0::1]
 28    33 ms    35 ms    30 ms  cv6.poinsignon.org [2001:bc8:3eff:c0::ff]

Post by 5350-uiop-1130 » Fri, Aug 26, 2022, 7:20 PM UTC

baobabKoodaa wrote: post #52

I wonder what HR thinks about this resume format?

Post by irrational » Fri, Aug 26, 2022, 7:27 PM UTC

vlan0 wrote: post #45

yjftsjthsd-h wrote: post #12

Earlier quoted context omitted.

> Cloudflare.NetworkEngineer Ah, that explains a lot. Not that anyone else couldn't do such a thing, but I feel like even amongst more "hacker" types it takes a relatively specialized background to pull a trick like this (at least statistically; I'm sure there are outliers).

Feels like we’re a dying bread with everything cloud first and serverless.

Post by nitros » Fri, Aug 26, 2022, 7:34 PM UTC

mrb wrote: post #39

tyingq wrote: post #17

Earlier quoted context omitted.

Not sure how he did it, but my first guess would be just a bunch of virtual interfaces on a linux box with a->b->c->d->e->etc routing, and something like the tc command[1] to add enough latency to each one that traceroute sees them all. If he's scripted it to do all the virtual nic creation and dns ptr entries, it would be interesting to see. [1] https://bencane.com/2012/07/16/tc-adding-simulated-network-l...

Virtual interfaces aren't necessary, and would be overkill. All he needs on his server is to listen on a raw network socket, read the incoming packet's IP TTL value, then forge and send an ICMP "time exceeded" response with the source IP address set to a value that depends on the TTL. The entire thing could be done in 20-30 lines of Python. Next to that he set up a DNS server configured with PTR records that map thes…

Post by Exuma » Fri, Aug 26, 2022, 7:35 PM UTC

readthenotes1 wrote: post #33

Exuma wrote: post #21

Earlier quoted context omitted.

So is that mail.jobs@ or mail+jobs@... or jobs@ A total flop on the last line

I bet if he can do this trace route thing, he can get all those emails going to his own domain regardless of who they are addressed to