All ports
Port4849/UDP
appserv-httpsPort
4849
Protocol
UDP
Category
Registered
Service
appserv-https
What is port 4849?
Port 4849/UDP is a Registered port, registered with IANA for specific applications. It is associated with the appserv-https service.
App Server - Admin HTTPS
Useful commands
nmapnmap -p 4849 -sV example.comnetcatnc -zv example.com 4849curlcurl -v http://example.com:4849/telnettelnet example.com 4849bash(echo > /dev/udp/example.com/4849) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4849/udpDeny
sudo ufw deny 4849/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4849 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4849 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4849/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4849" dir=in action=allow protocol=UDP localport=4849Security Risks
- Incorrect TLS/SSL configuration
- Man-in-the-Middle attacks if certificate is invalid
- Protocol implementation vulnerabilities
- Exposure of web services with weak authentication
Frequently Asked Questions
What service runs on port 4849/UDP?
Port 4849/UDP is associated with the appserv-https service. App Server - Admin HTTPS
Is it safe to expose port 4849 to the Internet?
It depends on the service and configuration. Port 4849 (appserv-https) 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 4849 is open?
You can use nmap: `nmap -p 4849 -sV example.com`, netcat: `nc -zv example.com 4849`, or the bash command: `(echo > /dev/udp/example.com/4849) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4849 on my firewall?
On Linux with UFW: `sudo ufw allow 4849/udp` (open) or `sudo ufw deny 4849/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4849 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4849" dir=in action=allow protocol=UDP localport=4849`.
What applications and services use port 4849?
Port 4849/UDP is used by the appserv-https service. Specific uses depend on the software and configuration. Check our related tools section for more information.