Port 4597A21 (AN-1xBS)
TCP and UDP port 4597 is assigned to A21 (AN-1xBS), an obscure service with no established public deployment.
- 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 5,223 · top 19%
Technical Details
what runs on :4597A21 (AN-1xBS) is registered on port :4597 over tcp and udp to David Ott, 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 :4597
# linux
sudo ss -tulpn 'sport = :4597'
# macos / bsd
sudo lsof -nP -i :4597
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :4597nmap -sV -p T:4597 <host>
sudo nmap -sU -sV -p U:4597 <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 :4597risk 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 :4597 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :4597, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :4567 | Sinatra Dev HTTP Port | TCP | Web Services | caution | 23.0k |
| :4610 | QualiSystems TestShell | TCP | Network Services | caution | 10.8k |
| :4534 | Armagetron Advanced | UDP | Gaming | caution | 9.4k |
| :4569 | IAX2 | UDP | Voice and Chat | caution | 8.0k |
| :4537 | WSS Security Service | TCPUDP | Security | safe | 0 |
| :4549 | Aegate PMR Service | TCPUDP | — | safe | 0 |
| :4593 | IPT (ANRI-ANRI) | TCPUDP | — | safe | 0 |
| :4536 | Event Heap Server SSL | TCPUDPtls | Network Services | safe | 0 |
risk mix of the 8 listed
- safe50%
- caution50%
1 of 8 encrypted