12.5.2. Prerequisites for configuring Keepalived - - Proxedo Network Security Suite 2 Administrator Guide

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12.5.2. Prerequisites for configuring Keepalived

The Keepalived component can only be added to cluster configuration.
Install the Keepalived package in cluster hosts as follows:
```
apt install keepalived 
```
It is available in Ubuntu 24.04 LTS main repository.

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Preface
- 1. Summary of contents
- 2. Target audience and prerequisites
- 3. Products covered in this guide
- 4. Contact and support information
- 5. About this document
  - 5.1. Feedback
1. Introduction
- 1.1. What PNS is
- 1.2. Who uses PNS?
2. Concepts of the PNS Gateway solution
- 2.1. Main components of the PNS Gateway solution
- 2.2. The concepts and architecture of PNS firewalls
3. Managing PNS hosts
- 3.1. MS and MC
  - 3.1.1. Defining a new host and starting MC
- 3.2. MC structure
- 3.3. Configuration and Configuration management
- 3.4. Viewing PNS logs
  - 3.4.1. The command bar of the log viewer
4. Registering new hosts
- 4.1. Bootstrap a new host
- 4.2. Reconnecting to a host
  - 4.2.1. Reconnecting MS to a host
5. Networking, routing, and name resolution
- 5.1. Configuring networking interfaces
- 5.2. Managing name resolution
- 5.3. Managing client-side name resolution
  - 5.3.1. Configure name resolution
- 5.4. The routing editor
6. Managing network traffic with PNS
- 6.1. Understanding Application-level Gateway policies
- 6.2. Zones
- 6.3. Application-level Gateway instances
- 6.4. Application-level Gateway services
- 6.5. Configuring firewall rules
- 6.6. Proxy classes
- 6.7. Policies
- 6.8. Monitoring active connections
- 6.9. Traffic reports
  - 6.9.1. Configuring PNS reporting
7. Logging with syslog-ng
- 7.1. Introduction to syslog-ng
- 7.2. Configuring syslog-ng with MC
8. The Text editor plugin
- 8.1. Using the Text editor plugin
  - 8.1.1. Configure services with the Text editor plugin
  - 8.1.2. Use the additional features of Text editor plugin
9. Native services
- 9.1. BIND
- 9.2. NTP
  - 9.2.1. Configuring NTP with MC
  - 9.2.2. Status and statistics
- 9.3. Postfix
  - 9.3.1. Configuring Postfix with MC
    - 9.3.1.1. Configuring Postfix with MC
- 9.4. Local services on PNS
  - 9.4.1. Enabling access to local services
10. Local firewall administration
- 10.1. GNU/Linux
- 10.2. Login to the firewall
- 10.3. Editing configuration files
- 10.4. Network configuration
- 10.5. System logging
- 10.6. NTP
- 10.7. BIND
- 10.8. Updating and upgrading your PNS hosts
- 10.9. Packet filter
- 10.10. PNS configuration
  - 10.10.1. Policy.py and instances.conf
    - 10.10.1.1. Edit the Policy.py file
  - 10.10.2. Application-level Gateway control
- 10.11. Managing core dump files
11. Key and certificate management in PNS
- 11.1. Cryptography basics
  - 11.1.1. Symmetric and asymmetric encryption
- 11.2. PKI Basics
- 11.3. PKI in MS
12. Clusters and high availability
- 12.1. Introduction to clustering
- 12.2. Clustering solutions
  - 12.2.1. Fail-Over clusters
  - 12.2.2. Load balance clusters
- 12.3. Managing clusters with MS
- 12.4. Creating clusters
- 12.5. Keepalived for High Availability
- 12.6. Availability Checker
  - 12.6.1. Prerequisites for configuring the Availability Checker plugin
  - 12.6.2.
    - 12.6.2.1. Configuring the Availability Checker
13. Advanced MS and Agent configuration
- 13.1. Setting configuration parameters
- 13.2. Setting agent configuration parameters
- 13.3. Managing connections
- 13.4. Handling XML databases
14. Virus and content filtering using CF
- 14.1. Content Filtering basics
  - 14.1.1. Quarantining
- 14.2. Content Filtering with CF
- 14.3. Quarantine management in MC
  - 14.3.1. Information stored about quarantined objects
  - 14.3.2. Configuring quarantine cleanup
15. Connection authentication and authorization
- 15.1. Authentication and authorization basics
  - 15.1.1. Inband authentication
  - 15.1.2. Outband authentication
    - 15.1.2.1. Outband authentication using the Authentication Agent
- 15.2. The concept of AS
  - 15.2.1. Supported backends and authentication methods
- 15.3. Authenticating connections with AS
- 15.4. Logging in AS
16. Virtual Private Networks
- 16.1. Virtual Private Networking basics
- 16.2. Using VPN connections
  - 16.2.1. Using VPN connections
- 16.3. Configuring IPSec connections
- 16.4. Configuring SSL (OpenVPN) connections
  - 16.4.1. Configuring SSL connections
  - 16.4.2. SSL options
    - 16.4.2.1. Configuring the VPN management daemon
    - 16.4.2.2. Push options
      - The Redirect gateway option
17. Integrating PNS to external monitoring systems
- 17.1. Monitoring PNS with Munin
- 17.2. Installing a Munin server on a MS host
- 17.3. Monitoring PNS with Nagios
Appendix A. Keyboard shortcuts in Management Console
- A.1. Function keys
- A.2. Shortcuts
- A.3. Access keys
Appendix B. Further readings
- B.1. PNS-related material
- B.2. General, Linux-related materials
- B.3. Postfix documentation
- B.4. BIND Documentation
- B.5. NTP references
- B.6. SSH resources
- B.7. OpenSSL resources
- B.8. TCP/IP Networking
- B.9. Netfilter/nftables
- B.10. General security-related resources
- B.11. syslog-ng references
- B.12. Python references
- B.13. Public key infrastructure (PKI)
- B.14. Virtual Private Networks (VPN)
Appendix C. Proxedo Network Security Suite End-User License Agreement
- C.1. 1. SUBJECT OF THE LICENSE CONTRACT
- C.2. 2. DEFINITIONS
- C.3. 3. LICENSE GRANTS AND RESTRICTIONS
- C.4. 4. SUBSIDIARIES
- C.5. 5. INTELLECTUAL PROPERTY RIGHTS
- C.6. 6. TRADE MARKS
- C.7. 7. NEGLIGENT INFRINGEMENT
- C.8. 8. INTELLECTUAL PROPERTY INDEMNIFICATION
- C.9. 9. LICENSE FEE
- C.10. 10. WARRANTIES
- C.11. 11. DISCLAIMER OF WARRANTIES
- C.12. 12. LIMITATION OF LIABILITY
- C.13. 13.DURATION AND TERMINATION
- C.14. 14. AMENDMENTS
- C.15. 15. WAIVER
- C.16. 16. SEVERABILITY
- C.17. 17. NOTICES
- C.18. 18. MISCELLANEOUS
Appendix D. Creative Commons Attribution Non-commercial No Derivatives (by-nc-nd) License

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