HP UX IPSec Software ipsec_config add bypass Syntax, Node1, Node2, Figure, Bypass List Example, Maximizing Security, ipsec_config add bypass ip_address

Configuring HP-UX IPSec

Step 6: Configuring the Bypass List (Local IPv4 Addresses)

application (16.1.1.1 and 16.2.2.2), and configure the critical application to use only the specific logical interfaces. You can then configure the remaining logical interfaces in the bypass list (15.1.1.1 and 15.2.2.2).

Figure 3-1	Bypass List Example
	Node1			Node2
			bypass
		15.1.1.1 (lan0:0)			15.2.2.2 (lan0:0)
			secure
		16.1.1.1 (lan0:1)			16.2.2.2 (lan0:1)

Maximizing Security

An IPv4 address in the bypass list has the same effect as an open IPSec policy, with the bypass interface address as the local address, a wildcard

(*) remote address, wildcard protocol and ports, and a Pass transform.

If you configure entries in the bypass list, intruders may be able to access services or ports bound to addresses in the bypass list from other interfaces on the system, even if the other interface IP addresses are secured by IPSec policies. Intruders may access services or ports bound to addresses in the bypass list even if the intruders are not directly connected to interfaces in the bypass list.

HP recommends that you do not use the bypass list on systems where you are using HP-UX IPSec as a filter or firewall to protect your network.

See “Maximizing Security” on page 59 for more information.

ipsec_config add bypass Syntax

You can use the following ipsec_config add bypass syntax to configure preshared keys in most installations:

ipsec_config add bypass ip_address

HP recommends that you use an ipsec_config batch file to configure HP-UX IPSec.To specify an add bypass operation for an ipsec_config batch file, use the above syntax without the ipsec_config command name:

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