Cisco Systems DPC/EPC2325 DOCSIS important safety instructions MD5 SHA

How Do I Configure My DOCSIS Residential Gateway?

Field	Description
Phase 2 authentication	Allows you to select an authentication type for another level of
	security. Select one of the following three authentication types:

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MD5

SHA

Null (none)

	You may choose any authentication type as long as the other end of
	the VPN tunnel uses the same method
	Note: SHA is recommended because it is more secure.
Phase 2 SA lifetime	Allows you to enter the number of seconds for an individual rotating
	key to last until a re-key negotiation between each endpoint occurs.
	Smaller lifetimes are generally more secure since it would give a
	hacker a smaller amount of time to try to crack the key. However, key
	negotiation does take up bandwidth, so network throughput is
	sacrificed with small lifetimes. The default setting for Phase 2 is 3,600
	seconds.

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