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Comments and suggestions concerning this book should be mailed to gmourani@videotron.ca © Copyright 1999-2000 Gerhard Mourani and Open Network Architecture ® 163 [root@deep tmp]# tar xzpf portsentry-version_tar.gz Compile and Optimize You must modify the “Makefile” file of Portsentry to specify installation paths, compilation flag, and optimization for your system. We must modify this file to be compliant with Red Hat file system structure. Step 1 Cd into the new Portsentry directory and type the following commands on your terminal: Edit the Makefile file (vi Makefile) and change the following lines: CC = cc To read: CC = egcs CFLAGS = -O -Wall To read: CFLAGS = -O9 -funroll-loops -ffast-math -malign-double -mcpu=pentiumpro -march=pentiumpro - fomit-frame-pointer -fno-exceptions -Wall INSTALLDIR = /usr/local/psionic To read: INSTALLDIR = /usr/psionic The above changes would configure the software to use “egcs” compiler, optimization flags specific to our system, and locate all files related to  Portsentry software to the destination target directory we have choose. Step 2 Since we are using an alternate path for the files (i.e NOT in /usr/local/psionic), we need to change the path to the PortSentry configuration file in the main “portsentry_config.h” header file. Cd into the new PortSentry directory and edit the  portsentry_config.h file (vi  portsentry_config.h) and change the following: #define CONFIG_FILE "/usr/local/psionic/portsentry/portsentry.conf" To read: #define CONFIG_FILE "/usr/psionic/portsentry/portsentry.conf" Step 3 Install Portsentry on your system. [root@deep portsentry-1.0]#  make linux [root@deep portsentry-1.0]#  make install The above commands would configure the software to Linux operating system, compile, build, and then install files into the appropriate locations. Cleanup after work [root@deep /]# cd /var/tmp [root@deep tmp]# rm -rf portsentry-version/ portsentry-version_tar.gz