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Port 4405 (ds-mail)

IANA assigns port 4405 to ds-mail: ASIGRA Televaulting Message Level Restore service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ds-mail TCP ASIGRA Televaulting Message Level Restore service - -
ds-mail UDP ASIGRA Televaulting Message Level Restore service - -

Check what is listening on port 4405

Linux: is anything listening on TCP 4405?
sudo ss -tlnp 'sport = :4405'
Linux: UDP 4405
sudo ss -ulnp 'sport = :4405'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4405
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4405 '
Windows (Command Prompt)
netstat -ano | findstr :4405
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4405 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4405
From Windows
Test-NetConnection HOST -Port 4405
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4405

Block port 4405 in the firewall

ufw
sudo ufw deny 4405/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4405 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4405 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4405' -Direction Inbound -Protocol TCP -LocalPort 4405 -Action Block
ufw
sudo ufw deny 4405/udp
iptables
sudo iptables -A INPUT -p udp --dport 4405 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4405 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4405' -Direction Inbound -Protocol UDP -LocalPort 4405 -Action Block

Related ports

4403ds-user4404ds-admin4406ds-slp4407nacagent

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.