- Close the port if nothing on the host needs it.
- Identify the process that listens on it (commands below) before opening it in a firewall.
- Expose a service only to the networks that use it.
Port 193: Spider Remote Monitoring Protocol
Port 193 is assigned by IANA to srmp (Spider Remote Monitoring Protocol).
193
How srmp works
Other servicesThe client sends a request to port 193 and the srmp service answers.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Well-known (0-1023)
- Category
- Other services
Is port 193 dangerous?
We have no specific security note for port 193. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 193
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| srmp | 193 | TCP, UDP | Spider Remote Monitoring Protocol | - | - |
// source: IANA service name and port number registry
Which program uses port 193, and is it reachable?
Linux
sudo ss -ltnup 'sport = :193' # process listening on 193
sudo lsof -nP -i :193macOS
sudo lsof -nP -i :193
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 193 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 193 netstat -ano | findstr :193
From another machine
nmap -p 193 -sV <host> sudo nmap -sU -p 193 <host> nc -zv <host> 193
Block it in the firewall
sudo ufw deny 193/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 193" -Direction Inbound -LocalPort 193 -Protocol TCP -Action Block # Windows
What is port 193 used for?
Port 193 is assigned by IANA to srmp (Spider Remote Monitoring Protocol).
Is port 193 TCP or UDP?
Port 193 is registered for TCP and UDP.
Is it safe to open port 193?
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. Close the port if nothing on the host needs it.
How do I check if port 193 is open?
On Linux run "ss -ltnup 'sport = :193'", on macOS "lsof -nP -i :193", and on Windows "netstat -ano | findstr :193" to see the local process. From another machine, "nmap -p 193 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp