<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >Testing internal MASQ client PC 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="Loading up the rc.firewall ruleset" HREF="loading-rc.firewall.html"><LINK REL="NEXT" TITLE="Testing internal MASQ client to MASQ server connectivity" HREF="testing-masqed-pc-to-masq-server.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="loading-rc.firewall.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-masqed-pc-to-masq-server.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="TESTING-THE-MASQED-PC" ></A >5.2. Testing internal MASQ client PC connectivity</H1 ><P ><P ></P ><UL ><LI ><P ><STRONG >Step Two: Testing internal MASQ client PC connectivity</STRONG > </P ><P >From an internal MASQed computer, try pinging its local IP address (i.e. <STRONG >ping 192.168.0.10 </STRONG >). This will verify that TCP/IP is correctly working on the local machine. Almost ALL modern operating systems have built-in support for the "ping" command. If this ping doesn't work, make sure that TCP/IP is correctly configured on the MASQed PC as described earlier in <A HREF="configuring-clients.html" >Chapter 4</A > of this HOWTO. 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-client# ping 192.168.0.10 PING 192.168.0.10 (192.168.0.10): 56 data bytes 64 bytes from 192.168.0.10: icmp_seq=0 ttl=255 time=0.8 ms 64 bytes from 192.168.0.10: icmp_seq=1 ttl=255 time=0.4 ms 64 bytes from 192.168.0.10: icmp_seq=2 ttl=255 time=0.4 ms 64 bytes from 192.168.0.10: icmp_seq=3 ttl=255 time=0.5 ms ^C --- 192.168.0.10 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="loading-rc.firewall.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-masqed-pc-to-masq-server.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Loading up the rc.firewall ruleset</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 client to MASQ server connectivity</TD ></TR ></TABLE ></DIV ></BODY ></HTML >