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Port 1898 (cymtec-port)

IANA assigns port 1898 to cymtec-port: Cymtec secure management.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cymtec-port TCP Cymtec secure management Michael Mester -
cymtec-port UDP Cymtec secure management Michael Mester -

Check what is listening on port 1898

Linux: is anything listening on TCP 1898?
sudo ss -tlnp 'sport = :1898'
Linux: UDP 1898
sudo ss -ulnp 'sport = :1898'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1898
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1898 '
Windows (Command Prompt)
netstat -ano | findstr :1898
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1898 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1898
From Windows
Test-NetConnection HOST -Port 1898
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1898

Block port 1898 in the firewall

ufw
sudo ufw deny 1898/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1898 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1898 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1898' -Direction Inbound -Protocol TCP -LocalPort 1898 -Action Block
ufw
sudo ufw deny 1898/udp
iptables
sudo iptables -A INPUT -p udp --dport 1898 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1898 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1898' -Direction Inbound -Protocol UDP -LocalPort 1898 -Action Block

Related ports

1896b-novative-ls1897metaagent1899mc2studios1900SSDP / UPnP

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