글쓴이:이정현
#!/bin/sh

################################  변수정의부문

# 메일 수신자
mailto=junghyun at junghyun.pe.kr(받고자하는 메일주소기입)

# 화면출력 여부, 메일전송 여부
dsp=${1}; msg=${2}

# 접속자 정보 등
a=${3}; c=${4}; d=${5}; h=${6}; n=${7}; p=${8}; s=${9}; u=${10}

# 현재 시간
time=`date`
hostname=`hostname`
################################  화면 출력부문

if [ $dsp = Y ]
then
/bin/echo -e "
                  ======================================\n\
                                 N O T I C E            \n\
                  ======================================\n\
                  텔넷을 사용할수 없습니다.!

             
                  
           
                  
 \n\
                  Access Time             : $time\n\
                  Client host address     : $a\n\
                  Client information      : $c\n\
                  Client host name(or IP) : $h\n\
                  Client host name        : $n\n\
                  Client user name        : $u\n\n"
fi
################################  메일 송신부문
if [ $msg = Y ]
then
/bin/echo -e "
                      ===============================\n\
                              접속 거부자 상세정보   \n\
                      ===============================\n\
\n\
            확인된 서버                    : $hostname
            Access Time                    : $time\n\
            Access client host address     : $a\n\
            Access client information      : $c\n\
            The daemon process name        : $d\n\
            Access client host name(or IP) : $h\n\
            Access client host name        : $n\n\
            The daemon process id          : $p\n\
            Server information             : $s\n\
            Access client user name        : $u\n\
\n\

--------------------------------------------------------------------\n\

                 Access client finger information
\n\
--------------------------------------------------------------------\n\
\n\n" | \
      /bin/mail -s "<B><U>텔넷접근</U></B> 호스트[$d]" $mailto
fi

=======================================================================
위와같이 설정하시고 /etc/hosts.deny에 
in.telnetd:ALL:twist ( /etc/hosts.deny-out Y Y %a %c %d %h %n %p %s %u ) &