HP UX IPSec Software Filter Selection, IKE Parameter Selection, HP-UX IKE SA Lifetime Values

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The filter matches packets with the following addresses:

Source address: 10.1.1.1

Destination address: 10.2.2.2

If the filter is mirrored, it also matches packets with the following addresses:

Source address: 10.2.2.2

Destination address: 10.1.1.1

The mirror setting only affects Windows IP Security behavior before IPsec SAs are established. If the Windows IP Security module receives a packet via an existing SA, it does not verify that the packet address fields match the address filter used when the SA was established.

By comparison, HP-UX IPSec host and tunnel policies are always mirrored. (Gateway policies are the only HP-UX IPSec policies that are not mirrored.)

Filter Selection

Windows does not allow you to specify the search or priority order for the filters in a rule or for the order of rules in a policy. The Windows IP Security module automatically creates an internal filter list and orders the filters from most specific to least specific.

HP-UX IPSec allows you to specify a priority value for IPsec and IKE policies. HP-UX IPSec searches the policies in priority order within each type of policy. Lower priority values have higher priority (priority value 1 is the highest priority).

If you do not specify a priority value when creating a policy on HP-UX, ipsec_config automatically assigns a priority value so that the new policy is the last policy searched before the default policy within its policy type. The output of the ipsec_config show command includes the priority values for configured policies.

IKE Parameter Selection

On HP-UX systems, only one IKE SA proposal is used for each peer. You can configure multiple IKE policies, but only one IKE policy is selected per peer, and each IKE policy specifies only one IKE SA. During IKE negotiations, IKE searches policies in priority order and selects the first policy with a matching remote address. IKE then uses the IKE SA parameters to send an IKE SA proposal, or to evaluate the IKE SA proposal(s) it receives.

On Windows systems, you can configure a set of multiple IKE SA proposals, but only one set per IP Security policy, and only one IP Security policy can be in use (assigned) on the system.

IKE SA Key (Master Key) Lifetime Values

IKE SA key lifetimes (referred to as Master key lifetimes on Windows systems) specify the maximum lifetimes for IKE SA keys and are specified by units of time (seconds). In addition, users can specify the maximum number of IPsec SA negotiations that can be completed per IKE SA (“Maximum Quick Modes” (page 43)).

HP-UX IKE SA Lifetime Values

The HP-UX IPSec default preferred lifetime value for IKE SAs is 28,800 seconds (eight hours).

If the HP-UX system initiates IKE SA negotiations, the HP-UX IKE daemon proposes the preferred lifetime value to the remote system. The remote system may process this value in any manner according to the IPsec protocol suite.

If the remote system initiates IKE SA negotiations and sends a proposed value that is longer than (less secure than) the HP-UX preferred value, HP-UX sends an IKE NOTIFY message with its preferred value, and this value is used for the SA.

If the remote system initiates IKE SA negotiations and sends a proposed lifetime that is the same or more secure (shorter than) the HP-UX preferred value, the HP-UX IKE daemon accepts the

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Contents HP Part Number J4256-90025 Published June Edition Page Table of Contents Glossary List of Figures Page List of Tables Page About This Document Typographic ConventionsPage Testing Environment Known Problem with Windows 2000 SP1 and SP2Introduction Protocol Implementation Differences Windows IP Security Configuration Overview RulesConfiguring a Windows Host-to-Host Policy Tunnel SettingsCreating a Policy Adding a Rule IP Security Policy WizardRules Tab Creating the IP Filter List and Filters for the Rule Creating an IP Filter ListClick OK to return to the Filter Properties dialog box Protocol Tab for Filter Properties Configuring Filter Actions for the Rule Selecting the Filter List for a RuleSecurity Methods for Filter Action Encryption and Integrity Click Apply Selecting the Filter Action Configuring the Connection Type for the Rule Modifying IKE Parameters for the PolicyGeneral Policy Properties Dialog Box Master key perfect forward secrecy PFS Starting the IP Security Service IKE Security Algorithms Dialog BoxIpsec Services Properties Dialog Box Assigning the IP Security PolicyVerifying the Configuration Windows ConfigurationExample HP-UX Configuration Outbound Tunnel Rule Requirements Configuring a Windows End-to-End Tunnel PolicyConfiguring a Tunnel Rule Inbound Tunnel Rule RequirementsOutbound Rule Outbound Rule Filter Inbound Rule Filter HP-UX Configuration Troubleshooting Tips Using IKE Logging on HP-UX SystemsUsing IKE Logging on Windows Systems Additional Windows Troubleshooting Tools Disable IKE logging. On Windows XP systems, setComparing HP-UX and Windows IPsec Configuration Parameters IPsec Parameters on Windows and HP-UXMirrored Filters Values page 42 forIKE SA Key Master Key Lifetime Values Filter SelectionIKE Parameter Selection HP-UX IKE SA Lifetime ValuesIPsec SA Key Session Key Lifetime Values Maximum Quick ModesPerfect Forward Secrecy PFS Windows IKE SA Lifetime ValuesWindows IPsec SA Lifetime Values Related Publications Page Glossary Transform
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UX IPSec Software specifications

HP-UX IPSec Software is an integral component of the HP-UX operating system, providing robust and secure communication capabilities for enterprise environments. As organizations increasingly rely on secure networking solutions, HP-UX IPSec stands out with its comprehensive set of features and technologies designed to safeguard sensitive data.

One of the core characteristics of HP-UX IPSec Software is its implementation of the Internet Protocol Security (IPSec) framework. This technology secures Internet Protocol (IP) communications through authentication and encryption, ensuring the integrity and confidentiality of data transmissions. By leveraging IPSec, HP-UX provides a secure method for connecting remote users and secure sites over untrusted networks, such as the internet.

A notable feature of the HP-UX IPSec Software is its support for both transport and tunnel modes. The transport mode encrypts only the payload of the IP packet, whereas the tunnel mode encapsulates the entire IP packet within a new packet, allowing for secure communications between entire networks. This flexibility enables organizations to tailor their security strategies based on specific use cases and requirements.

HP-UX IPSec also emphasizes interoperability and compliance with industry standards. The software supports various encryption algorithms and authentication methods, including those defined by the Internet Engineering Task Force (IETF). This commitment to open standards ensures that HP-UX can seamlessly integrate with a diverse range of networking infrastructures and security solutions.

In addition to its security features, HP-UX IPSec Software offers administration tools that simplify the configuration and management of IPSec policies. The software includes a user-friendly command-line interface, allowing system administrators to specify security associations and policies efficiently. Moreover, comprehensive logging and monitoring capabilities help organizations keep track of their security posture and detect potential vulnerabilities.

Another essential characteristic of HP-UX IPSec Software is its scalability. Designed to accommodate the needs of both small and large enterprises, it can handle increased loads and adapt to changing security demands without compromising performance.

In conclusion, HP-UX IPSec Software stands as a vital solution for organizations seeking to protect their data transmissions over IP networks. With its core technologies, such as transport and tunnel modes, adherence to industry standards, user-friendly administration tools, and scalability, it provides a formidable layer of security in an increasingly interconnected world. This makes it a preferred choice for enterprises aiming to enhance their network security frameworks.
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