<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <HTML ><HEAD ><TITLE >Firewall Configuration</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="Kickstart Configurator" HREF="index.html"><LINK REL="PREVIOUS" TITLE="Authentication" HREF="system-config-kickstart-auth.html"><LINK REL="NEXT" TITLE="X Configuration" HREF="system-config-kickstart-xconfig.html"></HEAD><link rel="stylesheet" type="text/css" href="rhdocs-man.css" ><BODY CLASS="CHAPTER" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Kickstart Configurator</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="system-config-kickstart-auth.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="system-config-kickstart-xconfig.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="REDHAT-CONFIG-KICKSTART-FIREWALL" ></A >Chapter 8. Firewall Configuration</H1 ><P > The <B CLASS="GUILABEL" >Firewall Configuration</B > window is similar to the screen in the installation program and the <B CLASS="APPLICATION" >Security Level Configuration Tool</B >. </P ><DIV CLASS="FIGURE" ><A NAME="REDHAT-CONFIG-KICKSTART-FIREWALL-FIG" ></A ><DIV CLASS="MEDIAOBJECT" ><P ><IMG SRC="./figs/ksconfig-firewall.png"></P ></DIV ><P ><B >Figure 8-1. Firewall Configuration</B ></P ></DIV <P > If <B CLASS="GUILABEL" >Disable firewall</B > is selected, the system allows complete access to any active services and ports. No connections to the system are refused or denied. </P ><P > Selecting <B CLASS="GUILABEL" >Enable firewall</B > configures the system to reject incoming connections that are not in response to outbound requests, such as DNS replies or DHCP requests. If access to services running on this machine is needed, you can choose to allow specific services through the firewall.</P> <P> Selecting <B CLASS="GUILABEL">SELinux Active</B> sets SELinux to enabled and enforcing. Selecting <B CLASS="GUILABEL">SELinux Warn</B> sets SELinux to enabled, but errors are logged instead of refusing to allow programs to run. Selecting <B CLASS="GUILABEL">SELinux Disabled</B> disables SELinux entirely. </P> <P> Only devices configured in the <B CLASS="GUILABEL" >Network Configuration</B > section are listed as available <B CLASS="GUILABEL" >Trusted devices</B >. Connections from any devices selected in the list are accepted by the system. For example, if <B CLASS="GUILABEL" >eth1</B > only receives connections from internal system, you might want to allow connections from it. </P ><P > If a service is selected in the <B CLASS="GUILABEL" >Trusted services</B > list, connections for the service are accepted and processed by the system. </P ><P > In the <B CLASS="GUILABEL" >Other ports</B > text field, list any additional ports that should be opened for remote access. Use the following format: <TT CLASS="USERINPUT" ><B >port:protocol</B ></TT >. For example, to allow IMAP access through the firewall, specify <TT CLASS="USERINPUT" ><B >imap:tcp</B ></TT >. Specify numeric ports can also be specified; to allow UDP packets on port 1234 through the firewall, enter <TT CLASS="USERINPUT" ><B >1234:udp</B ></TT >. To specify multiple ports, separate them with commas. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="system-config-kickstart-auth.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="system-config-kickstart-xconfig.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Authentication</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >X Configuration</TD ></TR ></TABLE ></DIV ></BODY ></HTML >