[nullindividual]

Yep! UDP/3343 by default.

You can use the -P flag to set the protocol (TCP, UDP, ICMP Other, GRE) and -p to set the port number, if applicable.

Microsoft should have stuck to the BSD traceroute. I don't know why they "invented" tracert.exe (which I believe is _based_ on BSD traceroute, like most of those early network tools in Windows). I wonder if this was a Winsock (or STREAMS[0]!) limitation.

[0] https://web.archive.org/web/20151229084950/http://www.kuro5h...

[dfox]

I assume that tracert using ICMP is not that much an WinSock limitation but limitation of the underlying NT security architecture without suid binaries, which was worked around with ICMP-only non-privileged “raw sockets”. But that is mostly an educated guess.

[nullindividual]

This is a limitation that dates back to NT 3.1 where SOCK_RAW was callable by standard User accounts. Only starting with Windows 2000 [0] does creating a RAW socket require local administrator rights.

[0] https://learn.microsoft.com/en-us/windows/win32/winsock/tcp-...