206 lines
3.5 KiB
HTML
206 lines
3.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Testing MASQ functionality with DNS resolution</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 MASQ functionality without DNS"
|
|
HREF="testing-masq-wo-dns.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Testing more MASQ functionality with DNS"
|
|
HREF="testing-masq-w-dns-extended.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-masq-wo-dns.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-w-dns-extended.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="TESTING-MASQ-W-DNS"
|
|
></A
|
|
>5.10. Testing MASQ functionality with DNS resolution</H1
|
|
><P
|
|
> <P
|
|
></P
|
|
><UL
|
|
><LI
|
|
><P
|
|
><STRONG
|
|
>Step Ten: Testing MASQ functionality with DNS
|
|
resolution</STRONG
|
|
></P
|
|
><P
|
|
>Now try TELNETing to a remote machine by DNS name (i.e. <STRONG
|
|
>"telnet metalab.unc.edu"</STRONG
|
|
> (IP address 152.2.210.81).
|
|
If this works, the output should look like something below. With this test,
|
|
this shows that UDP-based DNS is working fine. </P
|
|
><P
|
|
><TABLE
|
|
BORDER="0"
|
|
BGCOLOR="#E0E0E0"
|
|
WIDTH="90%"
|
|
><TR
|
|
><TD
|
|
><FONT
|
|
COLOR="#000000"
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
>--------------------------------
|
|
masq-client# telnet MetaLab.unc.edu
|
|
Trying 152.2.210.80...
|
|
Connected to 152.2.210.80.
|
|
Escape character is '^]'.
|
|
|
|
|
|
SunOS 5.7
|
|
|
|
|
|
******************** Welcome to MetaLab.unc.edu *******************
|
|
|
|
To login to MetaLab as a user, connect to login.metalab.unc.edu.
|
|
This machine does not allow public telnet logins.
|
|
|
|
login: Connection closed by foreign host.
|
|
--------------------------------</PRE
|
|
></FONT
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
></P
|
|
><P
|
|
>If this did not work, but Step EIGHT did work, make sure that you have
|
|
one or more valid DNS servers configured on each of the MASQ CLIENT
|
|
computer(s) as shown in <A
|
|
HREF="configuring-clients.html"
|
|
>Chapter 4</A
|
|
>. Please note
|
|
that these DNS servers will typically be your ISP's DNS servers and NOT your
|
|
local MASQ server. Some people might later choose to setup their OWN DNS
|
|
servers but this is beyond the scope of this HOWTO.</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-masq-wo-dns.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-w-dns-extended.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Testing MASQ functionality without DNS</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 more MASQ functionality with DNS</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |