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Date: Sat, 07 Oct 2000 17:44:39 +0900
From: ARAKAWA Osamu <oarakawa@mri-jma.go.jp>
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Subject: [FreeBSD-users-jp 55858] Re: telnet
 =?ISO-2022-JP?B?GyRCQFxCMyROJF8bKEI=?= DNS
 =?ISO-2022-JP?B?GyRCJEskaCRrGyhC?= hostname
 =?ISO-2022-JP?B?GyRCJE4bKEI=?= lookup
 =?ISO-2022-JP?B?GyRCJCwkRyQtJEokJCEjGyhC?= 
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$B$"$i$+$o!w(BMRI/JMA$B$G$9!#(B

From: Ueta Masateru <ueta@pixy.issp.u-tokyo.ac.jp>
Subject: [FreeBSD-users-jp 55680] Re: telnet $B@\B3$N$_(B DNS $B$K$h$k(B hostname $B$N(B lookup $B$,$G$-$J$$!#(B 
Date: Sat, 30 Sep 2000 15:15:45 +0900
Message-ID: <20000930151545P.ueta@pixy.issp.u-tokyo.ac.jp>

$B?"ED$5$s$N%"%I%P%$%9$K=>$$D4$Y$F$_$^$7$?!#(B

> 1.where telnet $B$H$7$F$_$k(B
> $B"*(B 2 $B$D8+IU$+$C$?$i!"IaCJ;H$C$F$$$J$$J}$G<B9T$7$F$_$k(B

# where telnet rcp rlogin rsh
/usr/bin/telnet
/bin/rcp               $B!t(Brcp$B$@$1(B/bin$B$K$"$k(B
/usr/bin/rlogin
/usr/bin/rsh

> 2.ldd telnet $B$H$+(B ldd rcp $B$H$+$r$7$F!"Hf3S$7$F$_$k(B
> $B"*(Blibc $B<~$j$J$I$K0c$$$,$"$k$+!"$I$&$+$rD4$Y$k!#$H$/$K(B ELF binary $B$H(B 
> a.out binary $B$"$?$j$K$OCm0U$7$F8+$k!#(B

$B$^$:!"(BELF or a.out binary$B$N3NG'(B
# file /usr/bin/telnet /usr/bin/rlogin /usr/bin/rsh /bin/rcp
/usr/bin/telnet: ELF 32-bit LSB executable, Intel 80386, 
version 1 (FreeBSD), dynamically linked, stripped
/usr/bin/rlogin: setuid ELF 32-bit LSB executable, Intel 80386, 
version 1 (FreeBSD), dynamically linked, stripped
/usr/bin/rsh:    setuid ELF 32-bit LSB executable, Intel 80386, 
version 1 (FreeBSD), dynamically linked, stripped
/bin/rcp:        setuid ELF 32-bit LSB executable, Intel 80386, 
version 1 (FreeBSD), statically linked, stripped

$B$9$Y$F(BELF binary$B$G$"$k$3$H$r3NG'!#(B
$B$?$@$7!"(B/bin/rcp$B$@$1$,!"(Bstatic link binary$B!#(B

# ldd /usr/bin/telnet
/usr/bin/telnet:
        libncurses.so.5 => /usr/lib/libncurses.so.5 (0x28072000)
        libipsec.so.0 => /usr/lib/libipsec.so.0 (0x280b1000)
        libc.so.4 => /usr/lib/libc.so.4 (0x280bb000)
# ldd /usr/bin/rlogin
/usr/bin/rlogin:
        libc.so.4 => /usr/lib/libc.so.4 (0x28065000)
# ldd /usr/bin/rsh
/usr/bin/rsh:
        libc.so.4 => /usr/lib/libc.so.4 (0x28065000)

> 3.$B$H$j$"$($:!"(Bnm /usr/lib/libc.a $B$H$+$r$7$F$_$k(B
> $B"*(Bgethostbyname $B$,J,N%$5$l$F$$$?$j$7$J$$$+$r8+$k(B

# nm -D /usr/lib/libc.so.4 | grep gethostbyname
000544a4 T gethostbyname
000544ec T gethostbyname2
# nm -a /usr/lib/libc.a| grep gethostbyname
         U gethostbyname
         U gethostbyname
         U gethostbyname
         U gethostbyname
000001b8 T gethostbyname
000001f0 T gethostbyname2

> 4.$B$I$&$7$F$bBLL\$J$i!"(Bnamed $B$N(B syslog $B$r:N<h$7$F860x$H$J$j$=$&$J$b$N$r(B
> $BC5$7=P$9!#(B

$B$3$l$O!"JL%^%7%s$KLd$$9g$o$;$K9T$C$F$$$k$N$G$A$g$C$HL5M}$G$9!#(B
DNS server$B$K$O;d$O<j$,=P$;$^$;$s$+$i!#(B
$B$+$o$j$K(Btcpdump$B$G<+%[%9%H$+$i(BDNS server$B$X$"$F$FAw=P$5$l$k%Q%1%C%H$r(B
$BC5$7$F$b!"(Btcpdump$B$N=PNO$N8+J}$r$A$c$s$HJ,$+$C$F$$$k$o$1$G$O$J$$$N$G$9$,!"(B

rlogin$B$G$N@\B3$K$*$$$F$O<+%[%9%H$H@\B3@h$H$N4V$K%Q%1%C%H$N$d$j<h$j$,(B
$B$"$k$N$G$9$,!"(Btelnet$B@\B3$G$O$$$C$5$$%Q%1%C%H$OAw=P$5$l$^$;$s!#(B

$B$3$N3NG'$K$*$$$F5$$,IU$$$?$N$G$9$,!"(B

telnet localhost
$B$9$i$b(B
localhost: No address associated with hostname
$B$H$J$C$F$7$^$$$^$9!#$^$"!"8=>u$G$OL5M}$b$J$$$G$7$g$&$,!#(B

> 5.http://www.freebsd.org/ $B$"$?$j$rD4$Y$F!";w$?>I>u$NJs9p$HBP:v$,Ds<($5(B
> $B$l$F$$$J$$$+$r$_$k(B

$BF1$8>I>u$NJs9p$,(Bfreebsd-questions$B$K$"$j$^$7$?!#(B

--------------------------------------------------------------------
  running 4.1-STABLE cvsup'd as of Jul 30

  when I try to telnet to a host I get the following error
  <hostname>: No address associated with hostname

  ftp, irc, etc the other clients I use seem to work fine.

  Thanks

  H. Jared Agnew
---------------------------------------------------------------------

$B$?$@$7!"(B7/30$B:"$N(B4.1-STABLE$B$NOC$J$s$G$9!#;d$O(B4.0-RELEASE$B!#(B
CVSup$B$O(BFirewall$B$N$?$a$K;H$&$3$H$,$G$-$^$;$s!#(B

$B$3$N%9%l%C%I$r$?$I$C$F$$$/$H(B

----------------------------------------------------------------
This was a problem in the secure-telnet in stable for a few days last
week. Re-CVSup, rebuild secure telnet (or world if you want), install,
and your problem should go away.
----------------------------------------------------------------

$B$H!"(Btelnet$B<+BN$NLdBj$G$"$k!"$b$&0lEY(BCVSup$B$7$J$*$7$F(Btelnet$B$r$D$/$jD>$7$F$/(B
$B$l!"$H$$$&$3$H$G$7$?!#(B

$BF1$8>I>u$G$b(Bfreebsd-questions$B$GOCBj$K$J$C$?$N$O(B4.1-STABLE$B$G$9!#(B
$B0lJ}!";d$O(B4.0-RELEASE(=4.0-CURRENT?)$B$G$3$NLdBj$KAx6x$7$^$7$?!#(B
$B>I>u$,F1$8$@$+$i$H$$$C$F860x$^$GF1$8$G$"$k$H$O8B$j$^$;$s$,!"(B
$B$H$j$"$($:!"(B/usr/bin/telnet$B$r(B4.1-RELEASE$B$N$b$N$K:9$749$($F$_$^$9!#(B
$B$=$l$G$bF1$8>I>u$,=P$k$N$J$i(B4.1-STABLE$B$N(Bsource$B$+$i(B/usr/bin/telnet$B$r(B
$B%3%s%Q%$%k$7$F:9$749$($F$_$^$9!#(B
$B$=$l$G$b$@$a$J$i(B......$B$I$&$7$^$7$g$&$+$M(B....

-------------------
arkw
