All ports
Port3302/TCP
mcs-fastmailPort
3302
Protocol
TCP
Category
Registered
Service
mcs-fastmail
What is port 3302?
Port 3302/TCP is a Registered port, registered with IANA for specific applications. It is associated with the mcs-fastmail service.
MCS Fastmail
Useful commands
nmapnmap -p 3302 -sV example.comnetcatnc -zv example.com 3302curlcurl -v http://example.com:3302/telnettelnet example.com 3302bash(echo > /dev/tcp/example.com/3302) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3302/tcpDeny
sudo ufw deny 3302/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 3302 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 3302 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3302/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3302" dir=in action=allow protocol=TCP localport=3302Security Risks
- Open relay used for spam
- Email spoofing
- Brute force attacks against email accounts
- Information disclosure in email headers
Frequently Asked Questions
What service runs on port 3302/TCP?
Port 3302/TCP is associated with the mcs-fastmail service. MCS Fastmail
Is it safe to expose port 3302 to the Internet?
It depends on the service and configuration. Port 3302 (mcs-fastmail) 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 3302 is open?
You can use nmap: `nmap -p 3302 -sV example.com`, netcat: `nc -zv example.com 3302`, or the bash command: `(echo > /dev/tcp/example.com/3302) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3302 on my firewall?
On Linux with UFW: `sudo ufw allow 3302/tcp` (open) or `sudo ufw deny 3302/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 3302 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3302" dir=in action=allow protocol=TCP localport=3302`.
What applications and services use port 3302?
Port 3302/TCP is used by the mcs-fastmail service. Specific uses depend on the software and configuration. Check our related tools section for more information.