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

HP-UX IPFilter Configuration Examples
example.3
Appendix A154
example.3
# block all inbound packets.
#
block in from any to any
#
# pass through packets to and from localhost.
#
pass in from 127.0.0.1/32 to 127.0.0.1/32
#
# allow a variety of individual hosts to send any type of IP
# packet to any other host.
#
pass in from 10.1.3.1/32 to any
pass in from 10.1.3.2/32 to any
pass in from 10.1.3.3/32 to any
pass in from 10.1.3.4/32 to any
pass in from 10.1.3.5/32 to any
pass in from 10.1.0.13/32 to any
pass in from 10.1.1.1/32 to any
pass in from 10.1.2.1/32 to any
#
#
# block all outbound packets.
#
block out from any to any
#
# allow any packets destined for localhost out.
#
pass out from any to 127.0.0.1/32
#
# allow any host to send any IP packet out to a limited number
# of hosts.
#
pass out from any to 10.1.3.1/32
pass out from any to 10.1.3.2/32
pass out from any to 10.1.3.3/32
pass out from any to 10.1.3.4/32
pass out from any to 10.1.3.5/32
pass out from any to 10.1.0.13/32
pass out from any to 10.1.1.1/32
pass out from any to 10.1.2.1/32