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Port 26489 (exonet)

IANA assigns port 26489 to exonet: EXOnet.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
exonet TCP EXOnet Urban Fosseus -
exonet UDP EXOnet Urban Fosseus -

Registry dates for this port: registered 2008-12-24.

Check what is listening on port 26489

Linux: is anything listening on TCP 26489?
sudo ss -tlnp 'sport = :26489'
Linux: UDP 26489
sudo ss -ulnp 'sport = :26489'
Linux / macOS: which process owns the port
sudo lsof -nP -i :26489
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':26489 '
Windows (Command Prompt)
netstat -ano | findstr :26489
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 26489 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 26489
From Windows
Test-NetConnection HOST -Port 26489
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 26489

Block port 26489 in the firewall

ufw
sudo ufw deny 26489/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 26489 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 26489 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 26489' -Direction Inbound -Protocol TCP -LocalPort 26489 -Action Block
ufw
sudo ufw deny 26489/udp
iptables
sudo iptables -A INPUT -p udp --dport 26489 -j DROP
nftables
sudo nft add rule inet filter input udp dport 26489 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 26489' -Direction Inbound -Protocol UDP -LocalPort 26489 -Action Block

Related ports

26486exoline-tcp, exoline-udp26487exoconfig27010flex-lmadmin27016chlenix

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