Port 6421NIM_WAN
A little-documented NIM_WAN assignment; no common public-facing use is established for TCP or UDP port 6421.
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- official
- risk
- 1/10
- lookups
- 0
2 transports registered
payload readable on path
registered with iana
safe
rank 993 of 5,696 · top 17%
Technical Details
what runs on :6421NIM_WAN is registered on port :6421 over tcp and udp to Rik Ditter, assigned February 2006. 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 :6421
# linux
sudo ss -tulpn 'sport = :6421'
# macos / bsd
sudo lsof -nP -i :6421
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :6421nmap -sV -p T:6421 <host>
sudo nmap -sU -sV -p U:6421 <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 detailsSecurity Information
exposure of :6421risk 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 :6421 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :6421, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :6444 | SGE Qmaster | TCPUDP | Network Services | caution | 8.8k |
| :6432 | PgBouncer | TCP | Databases | caution | 8.7k |
| :6445 | Sun Grid Engine Exec | TCPUDP | System | caution | 8.1k |
| :6389 | EMC CLARiiON | TCP | Databases | caution | 4.9k |
| :6406 | Business Objects Enterprise internal server | System | safe | 0 | |
| :6481 | Service Tags | TCPUDP | — | safe | 0 |
| :6379 | Redis | TCP | Databases | critical | 0 |
| :6405 | SAP BusinessObjects Enterprise internal server | System | safe | 0 |
risk mix of the 8 listed
- safe38%
- caution50%
- critical13%
0 of 8 encrypted