- Restrict management and monitoring protocols to the monitoring network.
- Replace community strings and default credentials.
- Send logs over TLS.
Port 3600: text relay-answer
Port 3600 is assigned by IANA to trap-daemon (text relay-answer).
3600
How trap-daemon works
Monitoring & loggingThe monitoring server collects metrics, alerts or logs from devices over port 3600.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Monitoring & logging
Is port 3600 dangerous?
We have no specific security note for port 3600. Its risk depends on the program actually listening on it. General advice for monitoring & logging services:
IANA registry entries for port 3600
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| trap-daemon | 3600 | TCP, UDP | text relay-answer | - | 2017-07-26 |
// source: IANA service name and port number registry
Which program uses port 3600, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3600' # process listening on 3600
sudo lsof -nP -i :3600macOS
sudo lsof -nP -i :3600
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3600 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3600 netstat -ano | findstr :3600
From another machine
nmap -p 3600 -sV <host> sudo nmap -sU -p 3600 <host> nc -zv <host> 3600
Block it in the firewall
sudo ufw deny 3600/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3600" -Direction Inbound -LocalPort 3600 -Protocol TCP -Action Block # Windows
What is port 3600 used for?
Port 3600 is assigned by IANA to trap-daemon (text relay-answer).
Is port 3600 TCP or UDP?
Port 3600 is registered for TCP and UDP.
Is it safe to open port 3600?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Restrict management and monitoring protocols to the monitoring network.
How do I check if port 3600 is open?
On Linux run "ss -ltnup 'sport = :3600'", on macOS "lsof -nP -i :3600", and on Windows "netstat -ano | findstr :3600" to see the local process. From another machine, "nmap -p 3600 <host>" shows whether it is reachable.
Other monitoring & logging ports
:161 SNMP udp · tcp · high risk :162 SNMP trap udp · tcp · moderate risk :9090 Prometheus / admin consoles tcp · udp · high risk :514 Syslog udp · tcp · moderate risk :6514 Syslog over TLS tcp · udp · dccp · low risk :5601 Kibana tcp · udp · high risk :391 SynOptics SNMP Relay Port tcp · udp :412 Trap Convention Port tcp · udp