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357 lines
5.7 KiB
357 lines
5.7 KiB
3 years ago
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML
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><HEAD
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><TITLE
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>Using the 'slirp' networking module</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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REL="HOME"
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TITLE="Bochs User Manual"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Tips and Techniques"
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HREF="howto.html"><LINK
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REL="PREVIOUS"
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TITLE="Configuring and using a tuntap network interface"
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HREF="config-tuntap.html"><LINK
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REL="NEXT"
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TITLE="Using the 'socket' networking module"
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HREF="using-socket.html"></HEAD
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><BODY
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CLASS="SECTION"
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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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SUMMARY="Header navigation 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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>Bochs User Manual</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="config-tuntap.html"
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ACCESSKEY="P"
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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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>Chapter 8. Tips and Techniques</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="using-socket.html"
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ACCESSKEY="N"
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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="SECTION"
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><H1
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CLASS="SECTION"
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><A
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NAME="USING-SLIRP"
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>8.12. Using the 'slirp' networking module</A
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></H1
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><P
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>Slirp is a software program that emulates a PPP, SLIP, or CSLIP connection to
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the Internet via a shell account. The original version has been written by
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Danny Gasparovski in 1995. It has been integrated in QEMU to provide user mode
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networking. Now a port of the QEMU Slirp implementation is available in Bochs.</P
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><P
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>Features and limitations:
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<P
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></P
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><UL
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><LI
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><P
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>Access to the internet and host network services without root/Administrator
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privileges or additional libraries.</P
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></LI
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><LI
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><P
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>Builtin DHCP and TFTP servers</P
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></LI
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><LI
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><P
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>Optional SMB support on Linux</P
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></LI
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><LI
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><P
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>ICMP traffic (ping) from guest to the host's network or the internet
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not supported</P
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></LI
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><LI
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><P
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>guest access from the host or external network disabled by default</P
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></LI
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></UL
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></P
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><P
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>This example shows how to use the 'slirp' module with the NE2000 adapter. The line
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is very similar for the E1000 or PCI Pseudo NIC.
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<PRE
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CLASS="SCREEN"
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>ne2k: mac=52:54:00:12:34:56, ethmod=slirp, ethdev=/home/volker/tests/bochs, script=""</PRE
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>
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The "ethdev" value specifies the TFTP root directory. All other options for Slirp must
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be set in a config file specified with "script" parameter. If no config file is set up,
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Bochs uses this "classic" Slirp configuration shown in the "Default" column below.</P
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><DIV
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CLASS="SECTION"
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><H2
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CLASS="SECTION"
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><A
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NAME="AEN4060"
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>8.12.1. Advanced Slirp setup with config file</A
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></H2
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><P
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>An example for a Slirp config file can be found in the Bochs sources and in
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binary packages (<TT
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CLASS="FILENAME"
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>misc/slirp.conf</TT
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>).
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<DIV
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CLASS="TABLE"
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><A
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NAME="AEN4064"
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></A
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><P
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><B
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>Table 8-2. Slirp config file options</B
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></P
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><TABLE
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BORDER="1"
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RULES="all"
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CLASS="CALSTABLE"
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><COL><COL><COL><THEAD
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><TR
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><TH
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>Option</TH
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><TH
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>Description</TH
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><TH
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>Default value</TH
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></TR
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></THEAD
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><TBODY
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><TR
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><TD
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>restricted</TD
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><TD
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>if set to 1, only built-in services are available</TD
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><TD
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>0</TD
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></TR
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><TR
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><TD
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>net</TD
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><TD
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>base IP address of the virtual network</TD
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><TD
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>10.0.2.0</TD
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></TR
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><TR
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><TD
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>mask</TD
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><TD
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>netmask of the virtual network</TD
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><TD
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>255.255.255.0</TD
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></TR
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><TR
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><TD
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>host</TD
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><TD
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>IP address of the DHCP and TFTP server</TD
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><TD
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>10.0.2.2</TD
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></TR
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><TR
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><TD
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>hostname</TD
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><TD
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>DHCP client hostname</TD
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><TD
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>undefined</TD
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></TR
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><TR
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><TD
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>dhcpstart</TD
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><TD
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>start address of DHCP pool</TD
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><TD
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>10.0.2.15</TD
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></TR
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><TR
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><TD
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>dns</TD
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><TD
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>IP address of the virtual DNS server</TD
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><TD
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>10.0.2.3</TD
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></TR
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><TR
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><TD
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>bootfile</TD
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><TD
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>boot filename returned by DHCP</TD
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><TD
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>undefined</TD
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></TR
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><TR
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><TD
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>dnssearch</TD
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><TD
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>comma-separated list of DNS suffixes to search (DHCP extension)</TD
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><TD
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>undefined</TD
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></TR
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><TR
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><TD
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>smb_export</TD
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><TD
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>absolute path to the shared folder (non-Windows SMB support)</TD
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><TD
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>undefined</TD
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></TR
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><TR
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><TD
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>smb_srv</TD
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><TD
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>alternative IP address of the SMB server</TD
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><TD
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>10.0.2.4</TD
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></TR
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><TR
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><TD
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>hostfwd</TD
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><TD
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>map guest port to host port for host-to-guest access
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(see below for details)</TD
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><TD
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>undefined</TD
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></TR
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></TBODY
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></TABLE
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></DIV
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></P
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></DIV
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><DIV
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CLASS="SECTION"
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><H2
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CLASS="SECTION"
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><A
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NAME="AEN4121"
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>8.12.2. Access to guest services from the host</A
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></H2
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><P
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>With the config file option "hostfwd" you can map guest ports to ports on the host
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system. This is the format of the directive:
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<PRE
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CLASS="SCREEN"
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> hostfwd = <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>protocol:hostaddr:hostport-guestaddr:guestport</I
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></SPAN
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></PRE
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>
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The host and guest IP addresses are optional. This example shows how to access
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the guest SSH server using the host port 12345.
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<PRE
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CLASS="SCREEN"
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> hostfwd = tcp::12345-:22</PRE
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>
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Up to 5 port redirection rules are supported per slirp instance.</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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SUMMARY="Footer navigation 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="config-tuntap.html"
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ACCESSKEY="P"
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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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ACCESSKEY="H"
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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="using-socket.html"
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ACCESSKEY="N"
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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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|
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>Configuring and using a tuntap network interface</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="howto.html"
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ACCESSKEY="U"
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>Up</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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>Using the 'socket' networking module</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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>
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