Table of Contents
What RFC 2408?
RFC 2408 – Internet Security Association and Key Management Protocol (ISAKMP)
What RFC 4301?
This document specifies the base architecture for IPsec-compliant systems. It describes how to provide a set of security services for traffic at the IP layer, in both the IPv4 [Pos81a] and IPv6 [DH98] environments.
What IPsec protects in tunnel mode?
IPsec can be used in tunnel mode or transport mode. Tunnel mode provides confidentiality (ESP) and/or authentication (AH) to the entire original packet, including the original IP headers. New IP headers are added (with the source and destination addresses of the IPsec gateways).
Is IPSec and IKEv2 the same?
IKEv2 (Internet key exchange version 2) is part of the IPSec protocol suite. Standardized in RFC 7296. IPSec has become the defacto standard protocol for secure Internet communications, providing confidentiality, authentication and integrity. Open-source VPN protocol developed by OpenVPN technologies.
Which is better IPSec or IKEv2?
IPSec is considered secure and reliable, while IKEv2 is extremely fast and stable – IKEV2 offers quick re-connections when switching networks or during sudden drops. Thus, a combination of IKEv2/IPsec forms one of the best VPN protocols that exhibits the advantages of the two.
What is phase1 and Phase 2 in IPSec VPN?
Phase 1 Security Associations are used to protect IKE messages that are exchanged between two IKE peers, or security endpoints. Phase 2 Security Associations are used to protect IP traffic, as specified by the security policy for a specific type of traffic, between two data endpoints.
What is RFC in cyber security?
A Request For Comments is a formal standards-track document developed in working groups within the Internet Engineering Task Force (IETF).
What are the 2 modes of IPsec?
The IPsec standards define two distinct modes of IPsec operation, transport mode and tunnel mode. The modes do not affect the encoding of packets. The packets are protected by AH, ESP, or both in each mode.
What is difference between transport mode and tunnel mode?
In transport mode, the sending and receiving hosts establish a connection before exchanging data. In tunnel mode, a second IP packet is sent in a completely different protocol. This protects data packets from being inspected or modified in transit.
Is AES-GCM required for mobile VPN with IPsec ESP?
GCM is required by NSA Suite B, a cryptographic standard specified by the United States government. For more information about AES-GCM in IPSec ESP, see RFC 4106. AES-GCM is not supported for Mobile VPN with IPSec.
What is RFC 2401 security architecture for IP?
RFC 2401 Security Architecture for IP November 1998 to help fill in gaps in background/vocabulary.
What type of encryption does AES-GCM use?
AES-GCM uses AES-CM for encryption and Galois Message Authentication Code (GMAC) for authentication. A detailed description of the AES-GCM family can be found in [ RFC5116 ].
What is AES-GCM for SRTP?
RFC 7714 AES-GCM for SRTP December 2015 The key size is set when the session is initiated and SHOULD NOT be altered. The Galois/Counter Mode of operation (GCM) is an AEAD mode of operation for block ciphers. GCM uses Counter Mode to encrypt the data, an operation that can be efficiently pipelined.