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Port 5164 (vpa, vpa-disc)

IANA assigns port 5164 to vpa, vpa-disc: Virtual Protocol Adapter.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vpa TCP Virtual Protocol Adapter Douglas Goodall -
vpa-disc UDP Virtual Protocol Adapter Discovery Douglas Goodall -

Registry dates for this port: registered 2009-08-05.

Check what is listening on port 5164

Linux: is anything listening on TCP 5164?
sudo ss -tlnp 'sport = :5164'
Linux: UDP 5164
sudo ss -ulnp 'sport = :5164'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5164
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5164 '
Windows (Command Prompt)
netstat -ano | findstr :5164
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5164 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5164
From Windows
Test-NetConnection HOST -Port 5164
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5164

Block port 5164 in the firewall

ufw
sudo ufw deny 5164/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5164 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5164 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5164' -Direction Inbound -Protocol TCP -LocalPort 5164 -Action Block
ufw
sudo ufw deny 5164/udp
iptables
sudo iptables -A INPUT -p udp --dport 5164 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5164 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5164' -Direction Inbound -Protocol UDP -LocalPort 5164 -Action Block

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5162snmpssh-trap5163sbackup5165ife-icorp, ife_icorp5166winpcs

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