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Port 1798 (etp)

IANA assigns port 1798 to etp: Event Transfer Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
etp TCP Event Transfer Protocol Mike Wray -
etp UDP Event Transfer Protocol Mike Wray -

Check what is listening on port 1798

Linux: is anything listening on TCP 1798?
sudo ss -tlnp 'sport = :1798'
Linux: UDP 1798
sudo ss -ulnp 'sport = :1798'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1798
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1798 '
Windows (Command Prompt)
netstat -ano | findstr :1798
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1798 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1798
From Windows
Test-NetConnection HOST -Port 1798
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1798

Block port 1798 in the firewall

ufw
sudo ufw deny 1798/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1798 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1798 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1798' -Direction Inbound -Protocol TCP -LocalPort 1798 -Action Block
ufw
sudo ufw deny 1798/udp
iptables
sudo iptables -A INPUT -p udp --dport 1798 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1798 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1798' -Direction Inbound -Protocol UDP -LocalPort 1798 -Action Block

Related ports

1796vocaltec-admin1797uma1799netrisk1800ansys-lm

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