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Port 37654 (unisys-eportal)

IANA assigns port 37654 to unisys-eportal: Unisys ClearPath ePortal.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
unisys-eportal TCP Unisys ClearPath ePortal Sung U Ro -
unisys-eportal UDP Unisys ClearPath ePortal Sung U Ro -

Registry dates for this port: registered 2006-01.

Check what is listening on port 37654

Linux: is anything listening on TCP 37654?
sudo ss -tlnp 'sport = :37654'
Linux: UDP 37654
sudo ss -ulnp 'sport = :37654'
Linux / macOS: which process owns the port
sudo lsof -nP -i :37654
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':37654 '
Windows (Command Prompt)
netstat -ano | findstr :37654
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 37654 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 37654
From Windows
Test-NetConnection HOST -Port 37654
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 37654

Block port 37654 in the firewall

ufw
sudo ufw deny 37654/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 37654 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 37654 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 37654' -Direction Inbound -Protocol TCP -LocalPort 37654 -Action Block
ufw
sudo ufw deny 37654/udp
iptables
sudo iptables -A INPUT -p udp --dport 37654 -j DROP
nftables
sudo nft add rule inet filter input udp dport 37654 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 37654' -Direction Inbound -Protocol UDP -LocalPort 37654 -Action Block

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