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IPFYI
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848

GDOI

Medium Risk

UDP — Security & VPN

Port Overview

Port Number 848
Service Name GDOI
Transport Protocol UDP
Category Security & VPN
Security Risk Medium
Port Range Well-Known (0-1023)

What is Port 848?

Group Domain of Interpretation (GDOI), defined in RFC 6407, an IKE-based key management protocol for IPsec group VPNs (GET VPN). Used by Cisco GET VPN deployments.

UDP Security & VPN

Security Considerations

Port 848 (GDOI) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.

Recommendation: Keep the service updated. Monitor logs for unusual activity.

Related Ports — Security & VPN

49 TACACS 65 TACACS-DS 88 Kerberos 90 DNSIX Security 370 codaauth2 389 LDAP 464 Kerberos Change Password 500 IKE/ISAKMP
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