AudioCodes Media Pack MP-11x, User Manual

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Version 6.6 161 MP-11x & MP-124
User's Manual 13. Security
5. To save the changes to flash memory, see 'Saving Configuration' on page 366 .
Table 13-3: IP Security Proposals Table Configuration Parameters
Parameter Name Description
Encryption Algorithm
[IPsecProposalTable_EncryptionAlgorithm]
Defines the encryption (privacy) algorithm.

[0] NONE

[1] DES CBC

[2] 3DES CBC

[3] AES (default)
Authentication Algorithm
[IPsecProposalTable_AuthenticationAlgorithm]
Defines the message authentication (integrity)
algorithm.

[0] NONE

[2] HMAC SHA1 96

[4] HMAC MD5 96 (default)
Diffie Hellman Group
[IPsecProposalTable_DHGroup]
Defines the length of the key created by the DH
protocol for up to four proposals. For the
ini file
parameter, X denotes the proposal number (0 to
3).

[0] Group 1 (768 Bits) = DH-786-Bit

[1] Group 2 (1024 Bits) (default) = DH-1024-
Bit
If no proposals are defined, the default settings (shown in the following table) are applied.
Table 13-4: Default IPSec/IKE Proposals
Proposal Encryption Authentication DH Group
Proposal 0 3DES SHA1 Group 2 (1024 bit)
Proposal 1 3DES MD5 Group 2 (1024 bit)
Proposal 2
3DES SHA1 Group 1 (786 bit)
Proposal 3 3DES MD5 Group 1 (786 bit)
13.4.3 Configuring IP Security Associations Table
The IP Security Associations Table page allows you to configure up to 20 peers (hosts or
networks) for IP security (IPSec)/IKE. Each of the entries in this table controls both Main
and Quick mode configuration for a single peer. Each row in the table refers to a different
IP destination. IPSec can be applied to all traffic to and from a specific IP address.
Alternatively, IPSec can be applied to a specific flow, specified by port (source or
destination) and protocol type.
The destination IP address (and optionally, destination port, source port and protocol type)
of each outgoing packet is compared to each entry in the table. If a match is found, the
device checks if an SA already exists for this entry. If no SA exists, the IKE protocol is
invoked and an IPSec SA is established and the packet is encrypted and transmitted. If a
match is not found, the packet is transmitted without encryption.
This table can also be used to enable Dead Peer Detection (RFC 3706), whereby the
device queries the liveliness of its IKE peer at regular intervals or on-demand. When two
peers communicate with IKE and IPSec, the situation may arise in which connectivity
between the two goes down unexpectedly. In such cases, there is often no way for IKE and