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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
 <META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9">
 <TITLE>Configuration HOWTO: °ìÈÌŪ¤Ê´ÉÍýºî¶È</TITLE>
 <LINK HREF="Config-HOWTO-4.html" REL=next>
 <LINK HREF="Config-HOWTO-2.html" REL=previous>
 <LINK HREF="Config-HOWTO.html#toc3" REL=contents>
</HEAD>
<BODY>
<A HREF="Config-HOWTO-4.html">¼¡¤Î¥Ú¡¼¥¸</A>
<A HREF="Config-HOWTO-2.html">Á°¤Î¥Ú¡¼¥¸</A>
<A HREF="Config-HOWTO.html#toc3">Ìܼ¡¤Ø</A>
<HR>
<H2><A NAME="s3">3. °ìÈÌŪ¤Ê´ÉÍýºî¶È</A></H2>

<P>
<P>½ñ¤¯¤³¤È¤Ï¤¿¤¯¤µ¤ó¤¢¤ê¤Þ¤¹¤¬¡¢»þ´Ö¤Ï¸Â¤é¤ì¤Æ¤¤¤Þ¤¹! ¤³¤³¤Ï³Ú¤·¤¯¤ä¤ê¤Þ
¤·¤ç¤¦¡£Â¾¤Ë¤â¤¿¤¯¤µ¤ó¤Îºî¶È¤¬¤¢¤Ê¤¿¤òÂÔ¤Á¤«¤Þ¤¨¤Æ¤¤¤Þ¤¹¤¬¡¢¤³¤ÎÀá¤Ï
¥Í¥Ã¥È¥ï¡¼¥¯Ãæ¿´¤Ç¹Ô¤­¤Þ¤¹¡£
<P>¥Í¥Ã¥È¥ï¡¼¥¯¤ÎʬÌî¤Ï¤È¤Æ¤â¹­¤¯¡¢¤³¤³¤ÇÀâÌÀ¤·¿Ô¤¯¤¹¤³¤È¤Ï¤Ç¤­¤Þ¤»¤ó¡£»²
¹Íʸ¸¥¤È¤·¤Æ NET-3 HOWTO ¤òµó¤²¤Æ¤ª¤­¤Þ¤¹¡£¤Þ¤¿¡¢¤Û¤È¤ó¤É¤Î¥Ç¥£¥¹¥È¥ê
¥Ó¥å¡¼¥·¥ç¥ó¤Ë¤Ï¥Í¥Ã¥È¥ï¡¼¥¯¥µ¡¼¥Ó¥¹¤ÎÀßÄê¤Ë¤Ä¤¤¤Æ¤Îʸ½ñ¤¬ÉÕ°¤·¤Æ¤¤¤Þ
¤¹¡£¤³¤³¤Ç¤Ï¤¤¤¯¤Ä¤«¤ÎÅÀ¤À¤±¤òºÆ³Îǧ¤·¤Þ¤·¤ç¤¦¡£
<P>¤¢¤Ê¤¿¤¬¥¤¥ó¥¹¥È¡¼¥ë¤¹¤ë¤È»×¤ï¤ì¤ë¥µ¡¼¥Ó¥¹¤Ë¤Ä¤¤¤Æ¤¹¤Ù¤­¤³¤È¤Î´Êñ¤Ê¥ê
¥¹¥È¤ò¼¨¤·¤Þ¤¹: cron ¤ä timed ¤È¤¤¤Ã¤¿¥«¥ì¥ó¥À¡¼¤äÈ÷˺Ͽ¡£http, samba,
telnet/ssh ¤Î¥¢¥¯¥»¥¹¡¢anonymous FTP, POP/IMAP ¥µ¡¼¥Ð¡¢NFS ¥µ¡¼¥Ó¥¹¡Ä¡£
<P>
<H2><A NAME="ss3.1">3.1 ¥Í¥Ã¥È¥ï¡¼¥¯¤ÎÀßÄê</A>
</H2>

<P>
<P>¤ª»È¤¤¤Î¥Ç¥£¥¹¥È¥ê¥Ó¥å¡¼¥·¥ç¥ó¤Ë¤ª¤¤¤Æ¥Í¥Ã¥È¥ï¡¼¥¯¥µ¡¼¥Ó¥¹¤ò¿·¤·¤¯ÄɲÃ
¤¹¤ë¤¿¤á¤Î¼ÂºÝ¤Î¼ê½ç¤Ï¤â¤Ã¤È¤º¤Ã¤ÈÊ£»¨¤Ç¤¹¤¬¡¢°Ê²¼¤Î¥¹¥¯¥ê¥×¥È¤ÏºÇ½é¤Î
¼ê¤¬¤«¤ê¤È¤·¤Æ¤Ï½½Ê¬¤Ê¤Ï¤º¤Ç¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
#!/bin/sh

# net-up.sh: set up network access

DEVICE=eth0
IPADDR=192.168.1.100
NETMASK=255.255.255.0
NETWORK=192.168.1.0
GATEWAY=192.168.1.1

ifconfig $DEVICE $IPADDR netmask $NETMASK up
route add -net $NETWORK netmask $NETMASK $DEVICE
route add default gw $GATEWAY
</PRE>
</CODE></BLOCKQUOTE>
<P>¤³¤Î¥¹¥¯¥ê¥×¥È¤ò»È¤¦¤È¡¢¥ì¥¹¥­¥å¡¼¥Ç¥£¥¹¥¯¤Î»ÈÍÑ»þ¤Ë¼ê·Ú¤Ë¥Í¥Ã¥È¥ï¡¼¥¯
¥¢¥¯¥»¥¹¤òÍ­¸ú¤Ë¤Ç¤­¤Þ¤¹¡£¸«¤Æ¤ÎÄ̤ê¤Ç¤¹¤¬¡¢¤³¤Î¥¹¥¯¥ê¥×¥È¤Ç¤Ï³°Éô¤Ë
ping, ftp, telnet ¤·¤«¤Ç¤­¤Þ¤»¤ó¡£
<P>
<H2><A NAME="ss3.2">3.2 ¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤Ø¤ÎÀܳ¤Î¶¦Í­</A>
</H2>

<P>
<P>¤³¤ì¤Ï Linux ¤ò¥µ¡¼¥Ð¤È¤·¤Æ»È¤¦¤ÈÊØÍø¤Ê»Å»ö¤Î¤Ò¤È¤Ä¤Ç¤¹¡£¸½ºß¤Ï¡¢¤´¤¯
Ê¿Ëޤʥ«¡¼¥Í¥ë¤Ç¤â IP ¥Õ¥¡¥¤¥¢¥¦¥©¡¼¥ëµ¡Ç½, IP ¥Þ¥¹¥«¥ì¡¼¥Éµ¡Ç½¡¢
¥Õ¥©¥ï¡¼¥Ç¥£¥ó¥°µ¡Ç½¤¬¥Ç¥Õ¥©¥ë¥È¤ÇÍ­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡£Í­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤Ê
¤¤¤è¤¦¤Ç¤¢¤ì¤Ð¡¢IP-Masquerade mini-HOWTO ¤ò¤´Í÷¤Ë¤Ê¤Ã¤Æ¡¢¤³¤ì¤é¤Îµ¡Ç½
¤òÍ­¸ú¤Ë¤¹¤ëÊýË¡¤òÄ´¤Ù¤Æ¤¯¤À¤µ¤¤¡£¤½¤ì¤«¤é
ipfwadm (¥«¡¼¥Í¥ë 2.0.x; 
<A HREF="http://www.xos.nl/linux/ipfwadm/">http://www.xos.nl/linux/ipfwadm/</A>) 
¤Þ¤¿¤Ï
ipchains (¥«¡¼¥Í¥ë 2.2.x; 
<A HREF="http://www.adelaide.net.au/~rustcorp/ipfwchains/ipfwchains.html">http://www.adelaide.net.au/~rustcorp/ipfwchains/ipfwchains.html</A>)
¤ò¥¤¥ó¥¹¥È¡¼¥ë¤·¤Æ¤¯¤À¤µ¤¤¡£É¬Íפʥµ¡¼¥Ó¥¹¤Î¤¿¤á¤Î¥«¡¼¥Í¥ë¥â¥¸¥å¡¼¥ë¤ò
Í­¸ú¤Ë¤¹¤ë¤Î¤ò˺¤ì¤Ê¤¤¤Ç¤¯¤À¤µ¤¤¡£Î㤨¤Ð¡¢FTP ¤ò»È¤¦¤¿¤á¤Ë¤Ï°Ê²¼¤Î¹Ô¤ò
/etc/rc.d/rc.sysconfig ¤ËÄɲä·¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
/sbin/modprobe ip_masq_ftp
</PRE>
</CODE></BLOCKQUOTE>
<P>¤³¤Î¾¤Î¥â¥¸¥å¡¼¥ë¤ÏÉáÄÌ¡¢
/lib/modules/KERNEL-VERSION/ipv4 ¤Ë¤¢¤ê¤Þ¤¹¡£
<P>¤¢¤Ê¤¿¤Î LAN ¤Ë¤¤¤ë¾¤Î¥Þ¥·¥ó¤ËÂФ·¤Æ IP ¥Þ¥¹¥«¥ì¡¼¥Éµ¡Ç½¤òÍ­¸ú¤Ë¤¹¤ë
¤Î¤Ï¤È¤Æ¤â´Êñ¤Ç¤¹¡£¤Þ¤º¡¢¥Í¥Ã¥È¥ï¡¼¥¯½é´ü²½¥¹¥¯¥ê¥×¥È
(/etc/sysconfig/network ¤¬Àµ¤·¤¤¾ì½ê¤Î¤Ï¤º¤Ç¤¹)¤òÄ´¤Ù¤Æ¡¢
<CODE>FORWARD_IPV4=true</CODE> ¤È¤¤¤¦¹Ô¤¬¤¢¤ë¤«¤É¤¦¤«¤ò³Îǧ¤·¤Þ¤¹¡£¤³¤ì¤Ï¡¢
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<P>°Ê²¼¤Î¹Ô¤ò /etc/rc.d/rc.sysinit ¤ËÄɲä·¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
# default: packets cannot go reach the outside
/sbin/ipfwadm -F -p deny
# allow all machines on the local network to reach the Internet
/sbin/ipfwadm -F -a m -S 192.168.1.0/24 -D 0.0.0.0/0
# alternatively, allow only these two machines
# /sbin/ipfwadm -F -a m -S 192.168.1.100/24 -D 0.0.0.0/0
# /sbin/ipfwadm -F -a m -S 192.168.1.101/24 -D 0.0.0.0/0
</PRE>
</CODE></BLOCKQUOTE>
<P>¥«¡¼¥Í¥ë 2.2.x ·Ï¤ò¤ª»È¤¤¤Ç¤¢¤ì¤Ð¡¢<CODE>ipfwadm</CODE> ¤Ç¤Ï¤Ê¤¯
<CODE>ipfwadm-wrapper</CODE> ¤ò»È¤¦¤ÈÁÇÁ᤯Ω¤Á¾å¤¬¤ê¤Þ¤¹¡£
<P>¤³¤³¤Þ¤Ç¤¯¤ë¤È¡¢¥¯¥é¥¤¥¢¥ó¥È¥Þ¥·¥ó¤«¤é ISP ¤ËÅÅÏäò¤«¤±¤µ¤»¤ë¼ê¤¬Íߤ·
¤¯¤Ê¤ë¤Ç¤·¤ç¤¦¡£É®¼Ô¤Ï
Mserver (
<A HREF="http://cpwright.villagenet.com/mserver/">http://cpwright.villagenet.com/mserver/</A>)
¤ò»È¤Ã¤Æ¤¤¤Þ¤¹¡£etc/mserver.conf ¤òÊÔ½¸¤·¤Æ¤¯¤À¤µ¤¤¡£
½¤Àµ¤¹¤ëɬÍפ¬¤¢¤ë¹àÌÜ¤Ï ``checkhost'', ``shadow'', ``cname'' ¤À¤±¤Ç¤¹¡£
¼¡¤ËÀܳ(Ê£¿ô²Ä)¤òÄêµÁ¤·¤Þ¤¹¡£¤â¤Á¤í¤ó¡¢¥¯¥é¥¤¥¢¥ó¥È¥Þ¥·¥ó¤Ë¤Ï¡¢
ÍøÍѲÄǽ¤Ê¥¯¥é¥¤¥¢¥ó¥È¤Î¤Ò¤È¤Ä¤ò¥¤¥ó¥¹¥È¡¼¥ë¤·¤Þ¤¹¡£
<P>
<P>
<P>
<H2><A NAME="Restricting"></A> <A NAME="ss3.3">3.3 ¥Í¥Ã¥È¥ï¡¼¥¯¥¢¥¯¥»¥¹¤ÎÀ©¸Â </A>
</H2>

<P>
<P>PPP ¤ò»È¤Ã¤Æ¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤ËÀܳ¤Ç¤­¤¿¤â¤Î¤È¤·¤Þ¤¹¡£¤¤¤Ã¤¿¤óÀܳ¤¹¤ë¤È¡¢
¤¢¤Ê¤¿¤Î¥Þ¥·¥ó¤Ï¹¶·â¤Ë¤µ¤é¤µ¤ì¤ë¤«¤â¤·¤ì¤Þ¤»¤ó¡£¤½¤³¤Ç¡¢°Ê²¼¤Î¹Ô¤ò
/etc/hosts.allow ¤ËÄɲ䷤Ƥ¯¤À¤µ¤¤:
<P>
<BLOCKQUOTE><CODE>
<PRE>
# only allow access to localhost
ALL: 127.
</PRE>
</CODE></BLOCKQUOTE>
<P>¤½¤ì¤«¤é°Ê²¼¤Î¹Ô¤ò /etc/hosts.deny ¤ËÄɲä·¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
# deny access to everyone
ALL: ALL
</PRE>
</CODE></BLOCKQUOTE>
<P>¥¤¥ó¥¿¡¼¥Í¥Ã¥È¤ËľÀÜ·Ò¤¬¤Ã¤Æ¤¤¤ë¥Í¥Ã¥È¥ï¡¼¥¯¤Ë½ê°¤·¤Æ¤¤¤ë¤Ê¤é¡¢
finger, telnet, ¤½¤ì¤«¤é¾¤Î¥µ¡¼¥Ó¥¹¤â¥»¥­¥å¥ê¥Æ¥£¤Î¤¿¤á¤Ë»ß¤á¤Æ¤ª¤¯Êý
¤¬¤è¤¤¤Ç¤·¤ç¤¦¡£telnet ¤ÎÂå¤ï¤ê¤Ë¤Ï <CODE>ssh</CODE> ¤ò»È¤¤¤Þ¤·¤ç¤¦¡£ÊÔ½¸
¤¹¤Ù¤­¥Õ¥¡¥¤¥ë¤Ï /etc/inetd.conf ¤Ç¤¹¡£¥µ¡¼¥Ó¥¹¤ò»ß¤á¤ëÂå
¤ï¤ê¤Ë¡¢°Ê²¼¤Î¹Ô¤ò /etc/hosts.allow ¤ËÄɲ䷤ƥͥåȥ¥¯
¥¢¥¯¥»¥¹¤òÀ©¸Â¤¹¤ëÊýË¡¤â¤¢¤ê¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
in.telnetd: 192.168.1., .¾¤Î.¿®Íꤷ¤Æ¤¤¤ë.¥Í¥Ã¥È¥ï¡¼¥¯
in.ftpd: 192.168.1., .¾¤Î.¿®Íꤷ¤Æ¤¤¤ë.¥Í¥Ã¥È¥ï¡¼¥¯
</PRE>
</CODE></BLOCKQUOTE>
<P>¤½¤ì¤«¤é°Ê²¼¤Î¹Ô¤ò /etc/hosts.deny ¤ËÄɲä·¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
in.telnetd: ALL
in.ftpd: ALL
</PRE>
</CODE></BLOCKQUOTE>
<P>
<P>
<H2><A NAME="ss3.4">3.4 NFS ¤Î¥¨¥¯¥¹¥Ý¡¼¥È</A>
</H2>

<P>
<P>¥µ¡¼¥Ð¾å¤ËÃÖ¤¤¤Æ¤¤¤ë¥Û¡¼¥à¥Ç¥£¥ì¥¯¥È¥ê¤Î¥¨¥¯¥¹¥Ý¡¼¥È¤Ï°ìÈÌŪ¤Ë¹Ô¤ï¤ì¤Æ
¤¤¤Þ¤¹¡£¤È¤³¤í¤¬¡¢¤¢¤ë¥æ¡¼¥¶¤Î UID ¤ä GID ¤¬¥Þ¥·¥ó´Ö¤Ç°ìÃפ·¤Æ¤¤¤Ê¤¤¤È
ÌäÂ꤬µ¯¤³¤ê¤Þ¤¹¡£¥æ¡¼¥¶ guido ¤Î UID/GID ¤¬ <CODE>server</CODE> ¤Ç 500 ¤Ç
¤¢¤ê¡¢<CODE>client</CODE> ¤Ç 512 ¤Î¾ì¹ç¤Ë¤Ï¡¢°Ê²¼¤ÎÀßÄ꤬ÊØÍø¤Ç¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
# /etc/exports
/tmp            ¼«Ê¬¤Î.¥¯¥é¥¤¥¢¥ó¥È.¥Þ¥·¥ó(rw)
/home/guido     ¼«Ê¬¤Î.¥¯¥é¥¤¥¢¥ó¥È.¥Þ¥·¥ó(rw,map_static=/etc/nfs/client.map)
</PRE>
</CODE></BLOCKQUOTE>
<P>/etc/nfs/client.map ¤Ï°Ê²¼¤Î¤è¤¦¤Ë½ñ¤­¤Þ¤¹:
<P>
<BLOCKQUOTE><CODE>
<PRE>
# /etc/nfs/client.map
# NFS mapping for client
#       remote          local
uid     512             500
gid     512             500
</PRE>
</CODE></BLOCKQUOTE>
<P>
<P>
<P>
<H2><A NAME="ss3.5">3.5 ¥Í¡¼¥à¥µ¡¼¥Ð</A>
</H2>

<P>
<P>¤Þ¤À½ñ¤±¤Æ¤¤¤Þ¤»¤ó¡£
<P>
<HR>
<A HREF="Config-HOWTO-4.html">¼¡¤Î¥Ú¡¼¥¸</A>
<A HREF="Config-HOWTO-2.html">Á°¤Î¥Ú¡¼¥¸</A>
<A HREF="Config-HOWTO.html#toc3">Ìܼ¡¤Ø</A>
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