- Require TLS and authenticated submission.
- Make sure the server is not an open relay.
- Publish SPF, DKIM and DMARC for the domain.
Port 4405: ASIGRA Televaulting Message Level Restore service
Port 4405 is assigned by IANA to ds-mail (ASIGRA Televaulting Message Level Restore service).
4405
How ds-mail works
EmailMail servers hand messages to each other over port 4405, 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 4405 dangerous?
We have no specific security note for port 4405. Its risk depends on the program actually listening on it. General advice for email services:
IANA registry entries for port 4405
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| ds-mail | 4405 | TCP, UDP | ASIGRA Televaulting Message Level Restore service | - | - |
// source: IANA service name and port number registry
Which program uses port 4405, and is it reachable?
Linux
sudo ss -ltnup 'sport = :4405' # process listening on 4405
sudo lsof -nP -i :4405macOS
sudo lsof -nP -i :4405
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4405 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 4405 netstat -ano | findstr :4405
From another machine
nmap -p 4405 -sV <host> sudo nmap -sU -p 4405 <host> nc -zv <host> 4405
Block it in the firewall
sudo ufw deny 4405/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 4405" -Direction Inbound -LocalPort 4405 -Protocol TCP -Action Block # Windows
What is port 4405 used for?
Port 4405 is assigned by IANA to ds-mail (ASIGRA Televaulting Message Level Restore service).
Is port 4405 TCP or UDP?
Port 4405 is registered for TCP and UDP.
Is it safe to open port 4405?
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 4405 is open?
On Linux run "ss -ltnup 'sport = :4405'", on macOS "lsof -nP -i :4405", and on Windows "netstat -ano | findstr :4405" to see the local process. From another machine, "nmap -p 4405 <host>" shows whether it is reachable.