Port
Port 68 — DHCP client
Port 68 (UDP) is used by DHCP client. DHCP client side — devices request an address on this port.
Port 68 at a glance
| Property | Value |
|---|---|
| Port number | 68 |
| Transport | UDP |
| Service | DHCP client |
| Category | Well-known port |
What it is used for
DHCP client side — devices request an address on this port.
Security considerations
Pairs with port 67. Protect with DHCP snooping.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 68 used for?
Port 68 (UDP) is used by DHCP client. DHCP client side — devices request an address on this port.
Is port 68 TCP or UDP?
Port 68 uses UDP.
Is it safe to open port 68?
Pairs with port 67. Protect with DHCP snooping.
Related
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