HP-UX IPSec Configuration Examples

Example 2: Authenticated ESP with Exceptions

Carrot Configuration

The ipsec_config batch file on Carrot contains the following entries.

Host IPSec Policies

You configure four host IPSec policies on Carrot.

1.potato: accepts all packets to and from system Potato using ESP-AES-HMAC-SHA1.

add host potato -destination 193.3.3.3 -priority 20 \ -action ESP_AES128_HMAC_SHA1

2.pass_icmp: allows all ICMP packets within the 192.1.1.* network to pass in clear text. Notice how the 192.1.1.* network is specified in the filter: the remote IP address is 192.1.1.0 and the prefix length is 24.The prefix length specifies the number of bits in the packet address that must match the configured remote IP address, beginning with the most significant bit.

add host pass_icmp -destination 192.1.1.0/24 \ -protocol ICMP -priority 30 -action pass

3.aes_lan: applies ESP-AES-HMAC-SHA1 authenticated ESP to all packets in the 192.1.1.* network.

add host aes_lan -destination 192.1.1.0/24 \ -priority 40 -action ESP_AES128_HMAC_SHA1

4.default: You modify the default host IPSec policy to discard all other packets. To modify the default host IPSec policy, you must delete the existing policy, then re-add it.

#to modify the default host policy, you must delete

#the existing default policy, then re-add it

add host default -action DISCARD add host default -action DISCARD

Policy Priority Note the priority of the pass_icmp policy (30) and aes_lan policy (40). The pass_icmp policy MUST have a lower order number (higher priority) than the aes_lan policy. This is because internal ICMP packets will match both the pass_icmp and aes_lan policy, and assigning the pass_icmp policy a lower order number causes IPSec to select the pass_icmp policy for the ICMP packets instead of the aes_lan policy.

300

Appendix C

Page 303 Page 305
Page 304
Image 304
HP UX IPSec Software manual Carrot Configuration, Host IPSec Policies
Page 303 Page 305

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.
Top Page Image Contents