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Port 1398 (video-activmail)

IANA assigns port 1398 to video-activmail: Video Active Mail.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
video-activmail TCP Video Active Mail Avshalom Houri -
video-activmail UDP Video Active Mail Avshalom Houri -

Check what is listening on port 1398

Linux: is anything listening on TCP 1398?
sudo ss -tlnp 'sport = :1398'
Linux: UDP 1398
sudo ss -ulnp 'sport = :1398'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1398
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1398 '
Windows (Command Prompt)
netstat -ano | findstr :1398
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1398 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1398
From Windows
Test-NetConnection HOST -Port 1398
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1398

Block port 1398 in the firewall

ufw
sudo ufw deny 1398/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1398 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1398 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1398' -Direction Inbound -Protocol TCP -LocalPort 1398 -Action Block
ufw
sudo ufw deny 1398/udp
iptables
sudo iptables -A INPUT -p udp --dport 1398 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1398 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1398' -Direction Inbound -Protocol UDP -LocalPort 1398 -Action Block

Related ports

1396dvl-activemail1397audio-activmail1399cadkey-licman1400cadkey-tablet

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