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Port 1198 (cajo-discovery)

IANA assigns port 1198 to cajo-discovery: cajo reference discovery.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cajo-discovery TCP cajo reference discovery John Catherino -
cajo-discovery UDP cajo reference discovery John Catherino -

Registry dates for this port: registered 2005-08.

Check what is listening on port 1198

Linux: is anything listening on TCP 1198?
sudo ss -tlnp 'sport = :1198'
Linux: UDP 1198
sudo ss -ulnp 'sport = :1198'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1198
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1198 '
Windows (Command Prompt)
netstat -ano | findstr :1198
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1198 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1198
From Windows
Test-NetConnection HOST -Port 1198
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1198

Block port 1198 in the firewall

ufw
sudo ufw deny 1198/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1198 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1198 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1198' -Direction Inbound -Protocol TCP -LocalPort 1198 -Action Block
ufw
sudo ufw deny 1198/udp
iptables
sudo iptables -A INPUT -p udp --dport 1198 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1198 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1198' -Direction Inbound -Protocol UDP -LocalPort 1198 -Action Block

Related ports

1196netmagic1197carrius-rshell1199dmidi1200scol

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.