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Port 4162 (omstopology)

IANA assigns port 4162 to omstopology: OMS Topology.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
omstopology TCP OMS Topology David Page -
omstopology UDP OMS Topology David Page -

Registry dates for this port: registered 2005-08.

Check what is listening on port 4162

Linux: is anything listening on TCP 4162?
sudo ss -tlnp 'sport = :4162'
Linux: UDP 4162
sudo ss -ulnp 'sport = :4162'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4162
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4162 '
Windows (Command Prompt)
netstat -ano | findstr :4162
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4162 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4162
From Windows
Test-NetConnection HOST -Port 4162
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4162

Block port 4162 in the firewall

ufw
sudo ufw deny 4162/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4162 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4162 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4162' -Direction Inbound -Protocol TCP -LocalPort 4162 -Action Block
ufw
sudo ufw deny 4162/udp
iptables
sudo iptables -A INPUT -p udp --dport 4162 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4162 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4162' -Direction Inbound -Protocol UDP -LocalPort 4162 -Action Block

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