All ports
Port1606/UDP
slm-apiPort
1606
Protocol
UDP
Category
Registered
Service
slm-api
What is port 1606?
Port 1606/UDP is a Registered port, registered with IANA for specific applications. It is associated with the slm-api service.
Salutation Manager (SLM-API)
Useful commands
nmapnmap -p 1606 -sV example.comnetcatnc -zv example.com 1606curlcurl -v http://example.com:1606/telnettelnet example.com 1606bash(echo > /dev/udp/example.com/1606) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 1606/udpDeny
sudo ufw deny 1606/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 1606 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 1606 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=1606/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 1606" dir=in action=allow protocol=UDP localport=1606Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 1606/UDP?
Port 1606/UDP is associated with the slm-api service. Salutation Manager (SLM-API)
Is it safe to expose port 1606 to the Internet?
It depends on the service and configuration. Port 1606 (slm-api) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 1606 is open?
You can use nmap: `nmap -p 1606 -sV example.com`, netcat: `nc -zv example.com 1606`, or the bash command: `(echo > /dev/udp/example.com/1606) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 1606 on my firewall?
On Linux with UFW: `sudo ufw allow 1606/udp` (open) or `sudo ufw deny 1606/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 1606 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 1606" dir=in action=allow protocol=UDP localport=1606`.
What applications and services use port 1606?
Port 1606/UDP is used by the slm-api service. Specific uses depend on the software and configuration. Check our related tools section for more information.