File: //usr/share/doc/freetds-0.95.81/userguide/stunnel.htm
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<HTML
><HEAD
><TITLE
>stunnel HOWTO</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="FreeTDS User Guide"
HREF="index.htm"><LINK
REL="UP"
TITLE="Advanced Configurations"
HREF="configs.htm"><LINK
REL="PREVIOUS"
TITLE="TDS Connection Pooling"
HREF="tdspool.htm"><LINK
REL="NEXT"
TITLE="Use FreeTDS "
HREF="usefreetds.htm"><LINK
REL="STYLESHEET"
TYPE="text/css"
HREF="userguide.css"><META
HTTP-EQUIV="Content-Type"
CONTENT="text/html; charset=utf-8"></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"
><SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> User Guide: A Guide to Installing, Configuring, and Running <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="tdspool.htm"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Chapter 5. Advanced Configurations</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="usefreetds.htm"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="STUNNEL"
>stunnel HOWTO</A
></H1
><P
>Contributed by <A
HREF="mailto:bradleyb@u.washington.edu"
TARGET="_top"
>Bradley Bell</A
>.</P
><P
>To set up <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> over stunnel between a Linux webserver and a W2k SQL server:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>Get unencrypted <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> working</P
></LI
><LI
><P
>Install openssl and stunnel on the Linux box:
<A
HREF="http://www.stunnel.org/"
TARGET="_top"
>stunnel.org</A
></P
></LI
><LI
><P
>Download the <A
HREF="http://www.stunnel.org/download/binaries.html"
TARGET="_top"
>stunnel binary</A
> and openssl dll's for Windows.</P
></LI
><LI
><P
>Generate stunnel.pem (complete with Diffie-Hellman parameters) for
placement on the W2k box. See <A
HREF="http://www.stunnel.org/faq/certs.html"
TARGET="_top"
>instructions</A
> in the stunnel FAQ.</P
></LI
><LI
><P
>Start stunnel on the W2k box:</P
><PRE
CLASS="SCREEN"
> <SAMP
CLASS="PROMPT"
>$ </SAMP
><KBD
CLASS="USERINPUT"
>stunnel.exe -d 61666 -r localhost:1433</KBD
></PRE
><P
>61666 is just an arbitrary port number.</P
></LI
><LI
><P
>Start stunnel on the Linux box:</P
><PRE
CLASS="SCREEN"
> <SAMP
CLASS="PROMPT"
>$ </SAMP
><KBD
CLASS="USERINPUT"
>stunnel -c -d 1433 -r <TT
CLASS="REPLACEABLE"
><I
>win2kserver</I
></TT
>:61666</KBD
></PRE
><P
>where <TT
CLASS="REPLACEABLE"
><I
>win2kserver</I
></TT
> is the hostname or IP address of the W2k box.</P
></LI
><LI
><P
>Set up <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
> to use the tunnel. If this is your unencrypted entry in
<TT
CLASS="FILENAME"
>freetds.conf</TT
>:</P
><DIV
CLASS="EXAMPLE"
><A
NAME="E.G.UNENCRYPTED"
></A
><P
><B
>Example 5-9. Unencrypted entry in <TT
CLASS="FILENAME"
>freetds.conf</TT
></B
></P
><PRE
CLASS="PROGRAMLISTING"
> [win2kserver]
host = win2kserver
port = 1433
</PRE
></DIV
><P
> the encrypted equivalent uses:</P
><DIV
CLASS="EXAMPLE"
><A
NAME="E.G.ENCRYPTED"
></A
><P
><B
>Example 5-10. Encrypted entry in <TT
CLASS="FILENAME"
>freetds.conf</TT
></B
></P
><PRE
CLASS="PROGRAMLISTING"
> [win2kserver]
host = localhost
port = 1433
</PRE
></DIV
></LI
></OL
></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="tdspool.htm"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.htm"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="usefreetds.htm"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>TDS Connection Pooling</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="configs.htm"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Use <SPAN
CLASS="PRODUCTNAME"
>FreeTDS</SPAN
></TD
></TR
></TABLE
></DIV
></BODY
></HTML
>