Port 8377Cruise SWROUTE

TCP and UDP port 8377 are assigned to Cruise SWROUTE, with no documented public deployment.

transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
1/10

safe

lookups
0

rank 993 of 6,030 · top 16%

Technical Details

what runs on :8377

Cruise SWROUTE is registered on port :8377 over tcp and udp to Steve Husak. We don't have a technical write-up for it beyond the IANA registry entry.

In nmap's internet-wide scan data this port is never observed open, so if it's open on your network it's more likely a custom or misconfigured service than the registered one.

find what's listening on :8377

this machine
# linux
sudo ss -tulpn 'sport = :8377'

# macos / bsd
sudo lsof -nP -i :8377

# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :8377
another host
nmap -sV -p T:8377 <host>
sudo nmap -sU -sV -p U:8377 <host>

run it? the handshake, the implementations you meet in the wild and the flags that matter come from the engineers who do.

add technical details

Security Information

exposure of :8377

risk score

1/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

no security notes recorded for :8377 yet

known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.

ports registered around :8377, by lookups.

portservicerisk
:8333VMware Server UI (Secure)caution
:8400Commvault CVPcaution
:8383M2M Servicessafe
:8403admindsafe
:8378Cruise CONFIGsafe
:8401sabarsdsafe
:8321Thin(ium) Network Protocolsafe
:8402abarsdsafe

risk mix of the 8 listed

  • safe75%
  • caution25%

0 of 8 encrypted