Port 1648concurrent-lm
The concurrent-lm service uses TCP and UDP port 1648.
- 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 5,481 · top 18%
Technical Details
what runs on :1648concurrent-lm is registered on port :1648 over tcp and udp to Maggie Brinsford. 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 :1648
# linux
sudo ss -tulpn 'sport = :1648'
# macos / bsd
sudo lsof -nP -i :1648
# windows (then: tasklist /FI "PID eq <pid>")
netstat -ano | findstr :1648nmap -sV -p T:1648 <host>
sudo nmap -sU -sV -p U:1648 <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 :1648risk 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 :1648 yet
known exploits, hardening advice, what a compromise looks like — suggest an edit if you know its exposure.
Related Ports
ports registered around :1648, by lookups.
| port | service | risk | |||
|---|---|---|---|---|---|
| :1701 | L2TP & L2F | UDP | Security | caution | 15.1k |
| :1645 | RADIUS Authentication (Cisco/Juniper) | TCPUDP | Security | caution | 15.1k |
| :1646 | RADIUS Accounting | TCPUDP | Security | caution | 13.1k |
| :1677 | Novell GroupWise | TCPUDP | caution | 7.5k | |
| :1589 | Cisco VQP / VMPS | UDP | Security | caution | 6.2k |
| :1627 | iSketch | Gaming | caution | 4.5k | |
| :1666 | Perforce | TCP | File Transfer | caution | 4.4k |
| :1597 | ORBplus IIOP | TCPUDP | — | safe | 0 |
risk mix of the 8 listed
- safe13%
- caution88%
0 of 8 encrypted