1. Shell Script 생성
# cat > /bin/wall
===================================================================
#!/bin/sh
trap "echo Sorry; exit 0" 1 2 3 4 5 6 7 10 15
echo "***********************************************************"
echo "* *"
echo "* You are NOT allowed Telnet Service!!! *"
echo "* *"
echo "***********************************************************"
exit 0
====================================================================
# chmod 755 /bin/wall
2. Shell Script 등록
# cat >> /etc/shells
======================
/bin/ksh
/bin/bash
/bin/csh
/bin/wall
======================
3. /etc/passwd 파일 수정
root:x:0:1:Super-User:/:/bin/ksh
~
temp:x:102:1::/export/temp:/bin/wall <- 수정
4. Telnet 접속 확인
# telnet localhost
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
SunOS 5.8
login: temp
Password:
Last login: Thu Apr 29 18:51:27 from localhost
***********************************************************
* *
* You are NOT allowed Telnet Service!!! *
* *
***********************************************************
Connection closed by foreign host.
5. FTP 접속 확인
# ftp localhost
Connected to localhost.
220 test04 FTP server (SunOS 5.8) ready.
Name (localhost:root): temp
331 Password required for temp.
Password:
230 User temp logged in.
ftp>
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©2002 영삼넷 // openkr