Port 68

bootpc · TCP/UDP

RangeSystem/well-known port (0–1023)
ProtocolTCP/UDP
Servicebootpc

Frequently asked questions

What is port 68 used for?

Port 68 is registered with the IANA for bootpc (TCP/UDP). Description: Bootstrap Protocol Client.

Is port 68 a well-known port?

Yes. Port 68 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.

How do I check whether port 68 is open?

Locally on Linux with ss -tulpn | grep ':68\b', on Windows with netstat -ano | findstr :68. To test a remote host use Test-NetConnection <host> -Port 68 in PowerShell or nc -zv <host> 68 on Linux/macOS.

How do I open port 68 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 68/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=68/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 68" -Direction Inbound -Protocol TCP -LocalPort 68 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPbootpcBootstrap Protocol Client
UDPbootpcBootstrap Protocol Client

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