Port
Port 4500 — IPsec NAT-T
Port 4500 (UDP) is used by IPsec NAT-T. IPsec NAT traversal.
Port 4500 at a glance
| Property | Value |
|---|---|
| Port number | 4500 |
| Transport | UDP |
| Service | IPsec NAT-T |
| Category | Registered port |
What it is used for
IPsec NAT traversal.
Security considerations
Part of VPN tunnels behind NAT.
See our full TCP/UDP port reference and learn how firewalls filter ports in the CyberOps course.
Frequently asked questions
What is port 4500 used for?
Port 4500 (UDP) is used by IPsec NAT-T. IPsec NAT traversal.
Is port 4500 TCP or UDP?
Port 4500 uses UDP.
Is it safe to open port 4500?
Part of VPN tunnels behind NAT.
Related
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