Scenario Four

HP-UX IPSec and IPFilter

Allowing Protocol 50 and Protocol 51 Traffic

	If the IPFilter configuration is so broad that it blocks protocol 50 or
	protocol 51 traffic, then IPSec traffic will not get through.
Figure 6-7	Scenario Four

A		B
10.10.10.10		15.15.15.15
IPSec <---------------	> TCP <	-----------------> IPSec
IPFilter
-----block !TCP-----

In Scenario Four, IPSec is configured to encrypt TCP traffic between the two machines and IPFilter is configured to block non-TCP traffic. IPFilter rules are also configured to let UDP/500 traffic pass on machine B.

# IPSec hole with machine B

pass in quick proto UDP from 15.15.15.15 port 500 to 10.10.10.10 port = 500

pass out quick proto UDP from 10.10.10.10 port 500 to 15.15.15.15 port = 500

# Let in encrypted IPSec traffic

pass in quick proto 50 from 15.15.15.15 to 10.10.10.10 pass out quick proto 50 from 10.10.10.10 to 15.15.15.15

#Allow TCP traffic to/from anywhere pass in quick proto TCP

pass out quick proto TCP

#Block all other traffic to/from anywhere block in from any to any

block out from any to any

NOTE	If IPSec is configured to do authentication rather than encryption, you
	must configure IPFilter to let protocol 51 traffic pass.

Chapter 6

197

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.

HP UX IPSec Software Protocol 51 traffic, then IPSec traffic will not get through, Scenario Four

Models: UX IPSec Software

HP-UX IPSec and IPFilter

protocol 51 traffic, then IPSec traffic will not get through.

UX IPSec Software specifications