231 lines
4.6 KiB
HTML
231 lines
4.6 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>Common Problems once the link is working</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.52"><LINK
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REL="HOME"
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TITLE="Linux PPP HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="Getting Help when totally stuck"
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HREF="c1329.html"><LINK
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REL="NEXT"
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TITLE="I can send email, but not receive it"
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HREF="x1354.html"></HEAD
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><BODY
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CLASS="CHAPTER"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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><A
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HREF="http://www.linuxports.com/howto/ppp"
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TARGET="_top"
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>Linux PPP HOWTO</A
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></TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="c1329.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="x1354.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="CHAPTER"
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><H1
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><A
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NAME="AEN1337"
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>Chapter 22. Common Problems once the link is working</A
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></H1
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><DIV
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CLASS="TOC"
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><DL
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><DT
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><B
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>Table of Contents</B
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></DT
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><DT
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>22.1. <A
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HREF="c1337.html#AEN1341"
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>I can't see beyond the PPP server I connect to</A
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></DT
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><DT
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>22.2. <A
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HREF="x1354.html"
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>I can send email, but not receive it</A
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></DT
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><DT
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>22.3. <A
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HREF="x1357.html"
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>Why can't people finger, WWW, gopher, talk, etc. to my machine?</A
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></DT
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></DL
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></DIV
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><P
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>One problem you will find is that many service providers will only
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support the connection software package that they distribute to new
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accounts. This is (typically) for Microsoft Windows :-( - and many service
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provider help desks seem to know nothing about Unix (or Linux). So, be
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prepared for limited assistance from them!</P
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><P
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>You could of course do the individual a favour and educate then about
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Linux (any ISP help desk person should be reasonably 'with it' in
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Internet terms and that means they should have a home Linux box - of
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course it does)!</P
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN1341"
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>22.1. I can't see beyond the PPP server I connect to</A
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></H1
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><P
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>OK - your PPP connection is up and running and you can ping the PPP
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server by IP number (the second or "remote" IP number shown by <TT
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CLASS="LITERAL"
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>ifconfig
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ppp0</TT
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>), but you can't reach anything beyond this.</P
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><P
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>First of all, try pinging the IP numbers you have specified in
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/etc/resolv.conf as name servers. If this works, you <I
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CLASS="EMPHASIS"
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>can</I
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> see beyond your
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PPP server (unless this has the same IP number as the "remote" IP number
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of your connection). So now try pinging the full Internet name of your
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service provider - eg</P
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><P
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> <TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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>ping my.provider.net.au</PRE
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></TD
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></TR
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></TABLE
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> </P
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><P
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>If this does NOT work, you have a problem with the name resolution. This
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is probably because of a typo in your /etc/resolv.conf file. Check this
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carefully against the information you acquired by ringing your service
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provider. If all looks OK, ring your service provider and check that you
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wrote down the IP numbers correctly.</P
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><P
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>If it STILL doesn't work (and your service provider confirms that his
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name servers are up and running), you have a problem somewhere else -
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and I suggest you check carefully through your Linux installation
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(looking particularly for file permissions).</P
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><P
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>If you STILL can't ping your service provider's IP name servers by IP number,
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either they are down (give them a voice call and check) or there is a
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routing problem at your service provider's end. Again, ring them and
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check this out.</P
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><P
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>One possibility is that the "remote end" is a Linux PPP server where the
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IP forwarding option has not been specified in the kernel!</P
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><P
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>A good general test is to try connecting to your service provider using
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the software that most supply for (gulp) Microsoft Windows. If
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everything works from another operating system to exactly the same
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account, then the problem is with your Linux system and NOT your service
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provider.</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="c1329.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
|
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
|
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ALIGN="right"
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VALIGN="top"
|
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><A
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HREF="x1354.html"
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>Next</A
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></TD
|
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></TR
|
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
|
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VALIGN="top"
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>Getting Help when totally stuck</TD
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><TD
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WIDTH="34%"
|
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ALIGN="center"
|
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VALIGN="top"
|
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> </TD
|
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><TD
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
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>I can send email, but not receive it</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |