Internet-Security.com UDP port 33457 details

UDP port 33457 is commonly targeted by UDP-based traceroute implementations.
On Linux, BSD, and macOS, the traceroute command sends probes to destination UDP ports starting at 33434 and incrementing; during a run it often reaches 33457.
Network devices such as Cisco IOS and Juniper Junos use the same UDP traceroute behavior, so their built-in traceroute also sends to ports like 33457.
Measurement tools such as CAIDA’s scamper and Paris-Traceroute perform UDP traceroutes that hit high ports in the 33434+ range, including 33457.
RIPE Atlas probes routinely generate UDP traceroute traffic to ports in this range during Internet path measurements.

UDP 33457