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Port 4163 (silverpeakpeer)

IANA assigns port 4163 to silverpeakpeer: Silver Peak Peer Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
silverpeakpeer TCP Silver Peak Peer Protocol Damon Ennis -
silverpeakpeer UDP Silver Peak Peer Protocol Damon Ennis -

Registry dates for this port: registered 2007-03.

Check what is listening on port 4163

Linux: is anything listening on TCP 4163?
sudo ss -tlnp 'sport = :4163'
Linux: UDP 4163
sudo ss -ulnp 'sport = :4163'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4163
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4163 '
Windows (Command Prompt)
netstat -ano | findstr :4163
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4163 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4163
From Windows
Test-NetConnection HOST -Port 4163
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4163

Block port 4163 in the firewall

ufw
sudo ufw deny 4163/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4163 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4163 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4163' -Direction Inbound -Protocol TCP -LocalPort 4163 -Action Block
ufw
sudo ufw deny 4163/udp
iptables
sudo iptables -A INPUT -p udp --dport 4163 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4163 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4163' -Direction Inbound -Protocol UDP -LocalPort 4163 -Action Block

Related ports

4161omscontact4162omstopology4164silverpeakcomm4165altcp

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