Enterasys Networks Network Card manual Click the Encryption tab Do one of the following

Tunnel Protocols	Chapter 3
	Configuring an ANG-3000/7000

	Table 2 IPSec Authentication Parameters
Parameter	Explanation
None	Disables the Signature Algorithm for IPSec packets; individual
	packets are no longer signed and verified during transmission.
HMAC-SHA	Enables hashing message authentication codes (HMAC) that are
	generated using the SHA cryptographic hashing function. HMAC-
	SHA is generally regarded as stronger, more secure
	cryptographic function than HMAC-MD5.
HMAC-MD5	Enables hashing message authentication codes (HMAC) that are
	generated using the Rivest MD5 message digest algorithm
	hashing function. While not as strong cryptographically as
	HMAC-SHA, HMAC-MD5 provides better performance.
Time Period	Interval after which a new key is generated.
Data	Lifetime volume (in kilobytes) of the key after which a new key is
Transferred	generated.

8Click the Encryption tab.

9Do one of the following:

–To set IPSec encryption parameters, choose IPSec from the Protocol menu. IPSec encryption parameters are shown in Figure 25. Select the IPSec Encryption Algorithm that determines how IPSec packets exchanged between the ANG and Aurorean Client remote users are encrypted.

–To set PPTP encryption parameters, choose PPTP from the Protocol menu. PPTP encryption parameters are shown in Figure 25. Select the Microsoft Point-to-Point Encryption (MPPE) algorithm that determines how PPTP packets exchanged between the ANG and Aurorean remote users are encrypted.

46 RiverMaster Administrator’s Guide