- Require TLS and authenticated submission.
- Make sure the server is not an open relay.
- Publish SPF, DKIM and DMARC for the domain.
Port 4310: Mir-RT exchange service
Port 4310 is assigned by IANA to mirrtex (Mir-RT exchange service).
4310
How mirrtex works
EmailMail servers hand messages to each other over port 4310, one hop at a time, until the recipient's server.
- 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
Is port 4310 dangerous?
We have no specific security note for port 4310. Its risk depends on the program actually listening on it. General advice for email services:
IANA registry entries for port 4310
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| mirrtex | 4310 | TCP, UDP | Mir-RT exchange service | - | 2008-02-14 |
// source: IANA service name and port number registry
Which program uses port 4310, and is it reachable?
Linux
sudo ss -ltnup 'sport = :4310' # process listening on 4310
sudo lsof -nP -i :4310macOS
sudo lsof -nP -i :4310
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4310 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 4310 netstat -ano | findstr :4310
From another machine
nmap -p 4310 -sV <host> sudo nmap -sU -p 4310 <host> nc -zv <host> 4310
Block it in the firewall
sudo ufw deny 4310/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 4310" -Direction Inbound -LocalPort 4310 -Protocol TCP -Action Block # Windows
What is port 4310 used for?
Port 4310 is assigned by IANA to mirrtex (Mir-RT exchange service).
Is port 4310 TCP or UDP?
Port 4310 is registered for TCP and UDP.
Is it safe to open port 4310?
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. Require TLS and authenticated submission.
How do I check if port 4310 is open?
On Linux run "ss -ltnup 'sport = :4310'", on macOS "lsof -nP -i :4310", and on Windows "netstat -ano | findstr :4310" to see the local process. From another machine, "nmap -p 4310 <host>" shows whether it is reachable.