HP-UX IPFilter A.03.05.13 Administrator's Guide: HP-UX 11i v3
Table Of Contents
- HP-UX IPFilter Version A.03.05.13 Administrator's Guide
- Legal Notices
- Table of Contents
- Preface: About This Document
- 1 Installing and Configuring HP-UX IPFilter
- Overview of HP-UX IPFilter Installation
- Step 1: Checking HP-UX IPFilter Installation Prerequisites
- Step 2: Loading HP-UX IPFilter Software
- Step 3: Determining the Rules for IPFilter
- Step 4: Adding Rules to the Rules Files
- Step 5: Loading IPFilter and NAT Rules
- Step 6: Verifying the Installation and Configuration
- Kernel Tunable Parameters
- Supported and Unsupported Interfaces
- Troubleshooting HP-UX IPFilter
- 2 HP-UX IPFilter on HP-UX 11i Version 3
- 3 Rules and Keywords
- IPFilter Configuration Files
- Basic Rules Processing
- IPFilter Keywords
- pass and block: Controlling IP Traffic
- in and out: Bidirectional Filtering
- quick: Optimizing IPFilter Rules Processing
- on: Filtering by Network Interfaces
- from and to: Filtering by IP Addresses and Subnets
- log: Tracking Packets on a System
- proto: Controlling Specific Protocols
- opt and ipopts: Filtering on IP Options
- icmp-type: Filtering ICMP Traffic by Type
- port: Filtering on TCP and UDP Ports
- keep state: Protecting TCP, UDP, and ICMP Sessions
- flags: Tight Filtering Based on TCP Header Flags
- keep frags: Letting Fragmented Packets Pass
- with frags: Dropping Fragmented Packets
- with short: Dropping Short Fragments
- return-rst: Responding to Blocked TCP Packets
- return-icmp: Responding to Blocked ICMP Packets
- dup-to: Drop-Safe Logging
- NAT Keywords
- 4 Dynamic Connection Allocation
- 5 Firewall Building Concepts
- Blocking Services by Port Number
- Using Keep State
- Using Keep State with UDP
- Using Keep State with ICMP
- Logging Techniques
- Improving Performance with Rule Groups
- Localhost Filtering
- Using the to
- Creating a Complete Filter by Interface
- Combining IP Address and Network Interface Filtering
- Using Bidirectional Filtering Capabilities
- Using port and proto to Create a Secure Filter
- 6 HP-UX IPFilter Utilities
- 7 HP-UX IPFilter and FTP
- 8 HP-UX IPFilter and RPC
- 9 HP-UX IPFilter and IPSec
- 10 HP-UX IPFilter and Serviceguard
- A HP-UX IPFilter Configuration Examples
- B HP-UX IPFilter Static Linking
- C Performance Guidelines
- Index
Installing and Configuring HP-UX IPFilter
Step 6: Verifying the Installation and Configuration
Chapter 1 13
Step 6: Verifying the Installation and
Configuration
After HP-UX IPFilter is installed and you have configured and loaded
the rules file, you must verify the installation and configuration.
• Verify that HP-UX IPFilter is running using the -v option of the ipf
command:
ipf -V
ipf: HP IP Filter: v3.5alpha5 (A.03.05.13) (312)
Kernel: HP IP Filter: v3.5alpha5 (A.03.05.13)
Running: yes
Log Flags: 0 = none set
Default: pass all, Logging: available
Active list: 1
• Verify that HP-UX IPFilter has been correctly loaded using the
kcmodule -s command:
kcmodule -s
Name ID Status Type
=============================================
pfil 1 LOADED STREAMS
ipf 2 LOADED WSIO
• Execute the following commands to verify that your rules have been
properly loaded. Run ipfstat -i to check for the inbound rules and
run ipfstat -o to check for outbound rules.
To view all rules at the same time, run:
ipfstat -io
By default, IPFilter processes the rules in the ipf.conf file.
For additional configuration options, see “Kernel Tunable Parameters”
on page 14.