HP-UX IPFilter Version A.03.05.14 Administrator's Guide

Performance Guidelines
System Configuration
Appendix C 183
System Configuration
The following are four suggestions for HP-UX system configuration for
optimal performance:
Figure C-1 Processing packets through a system
1. On an intermediate system, disable the interface on the intranet
side. By default, there is redundant processing for each packet
through an intermediate system, as shown in Figure C-1. By
Table C-1 Processing Packets through a System
Packets from the Internet Packets to the Internet
1 Packets enter the system 5 Packets enter the system
2 Processed by inbound
IPFilter processing
6 Processed by inbound IPFilter
processing
3 Processed by outbound
IPFilter processing
7 Processed by outbound
IPFilter processing
4 Packets leave the system 8 Packets leave the system
Packets are processed twice
(2 and 3)
Packets are processed twice
(6 and 7)