嵌入式系统

如何获取该软件。</P>
            <P>2 编译及安装 </P>
            <P>编辑Makefile.config(详见附录1），否则，有一些功能无法实现。然后执行如下命令序列：</P>
            <P>make；make clean；make install </P>
            <P>3.设置 /usr/local/etc/netperm.table及/etc/inetd.conf 和 /etc/services 
            </P>
            <P>　　netperm.table是fwtk启动时读取的配置文件，inetd.conf是守护进程inetd的配置文件。 
            我们使用inetd守护进程来启动，故需要配置inetd.conf来提供fwtk的各种服务。另外， 
            还需配置/etc/services文件给出相应服务的端口号。 </P>
            <P>在本例中，http的代理由http-gw提供；ftp的代理由ftp-gw提供；telnet的代理由tn-gw提供； 
            而pop3的代理由plug-gw提供。</P>
            <P>　　netperm.table的实例如下，其各项设置的意义十分明显，请自行了解： </P>
            <P>netacl-telnetd: permit-hosts 127.0.0.1 -exec /usr/sbin/in.telnetd 
            <BR>netacl-telnetd: permit-hosts 10.0.* -exec 
            /usr/sbin/in.telnetd<BR>netacl-rlogind: permit-hosts 10.0.* -exec 
            /usr/local/etc/rlogin-gw </P>
            <P>http-gw: timeout 3600 <BR>http-gw: default-httpd 10.0.0.1 
            <BR>http-gw: permit-hosts 10.0.* -log all <BR>http-gw: ftp-proxy 
            /usr/local/etc/ftp-gw <BR>http-gw: deny-hosts unknown </P>
            <P>ftp-gw: timeout 7200 <BR>ftp-gw: permit-hosts 10.0.* -log retr 
            stor <BR>ftp-gw: deny-hosts unknown</P>
            <P>tn-gw: timeout 7200 <BR>tn-gw: permit-hosts 10.0.* -passok -xok 
            <BR>tn-gw: deny-hosts unknown </P>
            <P>plug-gw: port 2012 10.0.* -plug-to pop.netease.com -port 110 
            <BR>plug-gw: port 2013 10.0.* -plug-to pop.163.net -port 110 
            <BR>plug-gw: port 2014 10.0.* -plug-to www.ynmail.com -port 110 
            <BR>plug-gw: port 2015 10.0.* -plug-to pop.263.net -port 110 
            <BR>plug-gw: port 2016 10.0.* -plug-to pop1.nettaxi.com -port 
            110<BR>plug-gw: port 2017 10.0.* -plug-to pop.sohu.com -port 110 
            <BR>plug-gw: port 2018 10.0.* -plug-to pop.21cn.com -port 110 </P>
            <P>inetd.conf的相应内容如下： <BR>ftp-a stream tcp nowait root 
            /usr/local/etc/ftp-gw ftp-gw <BR>telnet-a stream tcp nowait root 
            /usr/local/etc/tn-gw tn-gw<BR>www-a stream tcp nowait root 
            /usr/local/etc/http-gw http-gw <BR>ftp stream tcp nowait root 
            /usr/sbin/tcpd wu.ftpd -l -a <BR>telnet stream tcp nowait root 
            /usr/sbin/tcpd in.telnetd <BR>pop-3 stream tcp nowait root 
            /usr/sbin/tcpd ipop3d<BR>#imap stream tcp nowait root /usr/sbin/tcpd 
            imapd </P>
            <P>pop-gw2 stream tcp nowait root /usr/local/etc/plug-gw plug-gw 
            2012 <BR>pop-gw3 stream tcp nowait root /usr/local/etc/plug-gw 
            plug-gw 2013 <BR>pop-gw4 stream tcp nowait root 
            /usr/local/etc/plug-gw plug-gw 2014 <BR>pop-gw5 stream tcp nowait 
            root /usr/local/etc/plug-gw plug-gw 2015 <BR>pop-gw6 stream tcp 
            nowait root /usr/local/etc/plug-gw plug-gw 2016 <BR>pop-gw7 stream 
            tcp nowait root /usr/local/etc/plug-gw plug-gw 2017<BR>pop-gw8 
            stream tcp nowait root /usr/local/etc/plug-gw plug-gw 2018 </P>
            <P>相应的应在/etc/services/中加入如下内容： </P>
            <P>ftp 21/tcp <BR>ftp-a 2021/tcp <BR>telnet 23/tcp <BR>telnet-a 
            2023/tcp<BR>www 80/tcp http # WorldWideWeb HTTP <BR>www 80/udp # 
            HyperText Transfer Protocol<BR>www-a 8000/tcp <BR>pop-gw 2010/tcp 
            <BR>pop-gw1 2011/tcp <BR>pop-gw2 2012/tcp <BR>pop-gw3 2013/tcp 
            <BR>pop-gw4 2014/tcp<BR>pop-gw5 2015/tcp<BR>pop-gw6 
            2016/tcp<BR>pop-gw7 2017/tcp<BR>pop-gw8 2018/tcp<BR>pop-gw9 
            2019/tcp<BR>pop-gw10 2020/tcp </P>
            <P>附录1 fwtk 2.1的Makefile.config文件</P>
            <P># <BR># Copyright (c) 1993, Trusted Information Systems, 
            Incorporated<BR># All rights reserved. <BR># <BR># Redistribution 
            and use are governed by the terms detailed in the <BR># license 
            document ("LICENSE") included with the toolkit. <BR>#</P>
            <P># <BR># Author: Marcus J. Ranum, Trusted Information Systems, 
            Inc.<BR># <BR># RcsId: "$Header: 
            /home/rmurphy/fwtk/fwtk/RCS/Makefile.config.linux,v 1.2<BR># 
            1998/01/13 23:50:46 rmurphy Exp $" </P>
            <P># Your C compiler (eg, "cc" or "gcc") <BR>CC= gcc</P>
            <P># program to use for installation -- this may or may not preserve 
            <BR># old versions (or whatever). assumes that it takes 
            parameters:<BR># copy source dest<BR>CP= cp </P>
            <P># Defines for your operating system<BR># 
            <BR>DEFINES=-DLINUX<BR>#DEFINES=-DSYSV -DSOLARIS</P>
            <P># Options for your compiler (eg, "-g" for debugging, "-O" 
            for<BR># optimizing, or "-g -O" for both under GCC) <BR>#COPT= -g 
            -traditional $(DEFINES) <BR>COPT= -O $(DEFINES)<BR>#COPT= -O 
            $(DEFINES)</P>
            <P># Version of "make" you want to use<BR>#MAKE= gnumake<BR>MAKE= 
            make </P>
            <P># Your ranlib utility (use "touch" if you don't have ranlib) 
            <BR>RANLIB= ranlib <BR>#RANLIB= touch</P>
            <P># Destination directory for installation of binaries <BR>DEST= 
            /usr/local/etc</P>
            <P># Destination directory for installation of man pages 
            <BR>#DESTMAN= $(DEST)/../man</P>
            <P># Names of any auxiliary libraries your system may require (e.g., 
            -lsocket) <BR># If you want to link against a resolver library, 
            specify it here. <BR>#AUXLIB= <BR>#AUXLIB= -lsocket <BR># Some 
            versions of Linux have broken the crypt() function out into a <BR># 
            separate library - uncomment the following line if authsrv fails to 
            build.<BR>AUXLIB= -lcrypt</P>
            <P># For Solaris:<BR>#AUXLIB= -lresolv -lsocket -lnsl </P>
            <P># DBM library should be specified if it is an external library or 
            <BR># you with to use a different one than what is included in libc 
            <BR>#DBMLIB= -lndbm</P>
            <P># for Linux: <BR>DBMLIB=-lgdbm <BR># "Linux" is such a ephemeral 
            concept. Unfortunately, one of the <BR># significant 
            incompatibilities between distributions and versions<BR># is where 
            the DBM libraries end up. "-ldbm", "-ldb", or "-lgdbm" could <BR># 
            work for you. "-lgdbm" works for me (Slackware Linux 2.3). <BR># for 
            BSD:<BR>#DBMLIB=</P>
            <P># Flags to pass to the linker (eg, -static for static binaries 
            under GCC, <BR># or -Bstatic for static binaries under SunOS 
            4.1.x)<BR>#LDFL= -Bstatic <BR>#LDFL= <BR>LDFL= -g -static <BR># 
            Flags for X gateway link - usually the same as LDFL <BR>XLDFL=-g 
</P>
            <P># Location of the fwtk sources [For #include by any external 
            tools needing it]<BR>#FWTKSRCDIR=/u/b/mjr/firewall/fwtk 
            <BR>FWTKSRCDIR=/usr/local/src/fwtk</P>
            <P># Location of X libraries for X-gw 
            <BR>XLIBDIR=/usr/X11R6/lib<BR>#XLIBDIR=/usr/local/X11R5/lib</P>
            <P># X Libraries <BR># For BSD:<BR>#XLIBS= -L$(XLIBDIR) -lXaw -lXmu 
            -lXt -lXext -lX11 -lSM -lICE -lipc <BR>#XLIBS = -L$(XLIBDIR) -lXaw 
            -lXmu -lXt -lXext -lX11 <BR># for Linux:</P>
            <P>XLIBS = -L$(XLIBDIR) -lXaw -lXmu -lXt -lXext -lX11 -lc</P>
            <P># for BSD/OS 2.0: <BR>#XLIBS = -L$(XLIBDIR) -lXaw -lXmu -lXt 
            -lXext -lX11 -lSM -lICE -lXext <BR># For SunOS: <BR>#XLIBS = 
            -L$(XLIBDIR) -lXaw -lXmu -lXt -lXext -lX11 </P>
            <P># Location of X include files <BR>XINCLUDE=/usr/X11R6/include 
            <BR>#XINCLUDE=/usr/local/X11R5/include</P>
            <P># Objects to include in libfwall for SYSV <BR>SYSVOBJ= signal.o 
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