<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >Testing internal MASQ server connectivity</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Linux IP Masquerade HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Testing IP Masquerade " HREF="testing.html"><LINK REL="PREVIOUS" TITLE="Testing internal MASQ client to MASQ server connectivity" HREF="testing-masqed-pc-to-masq-server.html"><LINK REL="NEXT" TITLE="Testing internal MASQ server to MASQ client connectivity" HREF="testing-masq-server-to-masqed-pc.html"></HEAD ><BODY CLASS="SECT1" 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" >Linux IP Masquerade HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="testing-masqed-pc-to-masq-server.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 5. Testing IP Masquerade</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="testing-masq-server-to-masqed-pc.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="TESTING-MASQ-SERVER-INTERNAL" ></A >5.4. Testing internal MASQ server connectivity</H1 ><P ><P ></P ><UL ><LI ><P ><STRONG >Step Four: Testing internal MASQ server connectivity</STRONG > </P ><P >On the MASQ server, ping the internal IP address of the MASQ server's network interface card (i.e. <STRONG >ping 192.168.0.1</STRONG >). If this ping doesn't work, make sure that TCP/IP is correctly configured on the MASQed Server as described by the various Network HOWTOs (URLs can be found in the requirements section for your 2.4.x kernel in <A HREF="kernel-2.4.x-requirements.html" >Section 2.6</A >, 2.2.x kernel in <A HREF="kernel-2.2.x-requirements.html" >Section 2.7</A >, or 2.0.x kernel in <A HREF="kernel-2.0.x-requirements.html" >Section 2.8</A >). The output should look something like the following (hit Control-C to abort the ping):</P ><P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" WIDTH="90%" ><TR ><TD ><FONT COLOR="#000000" ><PRE CLASS="PROGRAMLISTING" >-------------------------------------- masq-server# ping 192.168.0.1 PING 192.168.0.1 (192.168.0.1): 56 data bytes 64 bytes from 192.168.0.1: icmp_seq=0 ttl=255 time=0.8 ms 64 bytes from 192.168.0.1: icmp_seq=1 ttl=255 time=0.4 ms 64 bytes from 192.168.0.1: icmp_seq=2 ttl=255 time=0.4 ms 64 bytes from 192.168.0.1: icmp_seq=3 ttl=255 time=0.5 ms ^C --- 192.168.0.1 ping statistics --- 4 packets transmitted, 4 packets received, 0% packet loss round-trip min/avg/max = 0.4/0.5/0.8 ms ---------------------------------------</PRE ></FONT ></TD ></TR ></TABLE ></P ></LI ></UL ></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="testing-masqed-pc-to-masq-server.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="testing-masq-server-to-masqed-pc.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Testing internal MASQ client to MASQ server connectivity</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="testing.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Testing internal MASQ server to MASQ client connectivity</TD ></TR ></TABLE ></DIV ></BODY ></HTML >