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Port 1396 (dvl-activemail)

IANA assigns port 1396 to dvl-activemail: DVL Active Mail.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dvl-activemail TCP DVL Active Mail - -
dvl-activemail UDP DVL Active Mail - -

Check what is listening on port 1396

Linux: is anything listening on TCP 1396?
sudo ss -tlnp 'sport = :1396'
Linux: UDP 1396
sudo ss -ulnp 'sport = :1396'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1396
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1396 '
Windows (Command Prompt)
netstat -ano | findstr :1396
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1396 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1396
From Windows
Test-NetConnection HOST -Port 1396
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1396

Block port 1396 in the firewall

ufw
sudo ufw deny 1396/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1396 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1396 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1396' -Direction Inbound -Protocol TCP -LocalPort 1396 -Action Block
ufw
sudo ufw deny 1396/udp
iptables
sudo iptables -A INPUT -p udp --dport 1396 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1396 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1396' -Direction Inbound -Protocol UDP -LocalPort 1396 -Action Block

Related ports

1394iclpv-nlc1395iclpv-wsm1397audio-activmail1398video-activmail

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