openssh 5.8 업데이트

서버에 설치된 ssh 버전확인

[darksharavim]ssh -V
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

 

기존 패키지 삭제

[darksharavim]/etc/rc.d/init.d/sshd stop
[darksharavim]rpm -qa | grep ssh 패키지 확인
[darksharavim]rpm -e openssh-server
[darksharavim]rpm -e openssh-clients
[darksharavim]rpm -e openssh

 

openssh 5.8 다운로드

[darksharavim]wget ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-5.8p1.tar.gz

 

압축해제

[darksharavim]tar -xvzf openssh-5.8p1.tar.gz

 

설치

[darksharavim]./configure \
--prefix=/usr/local/openssh \
--sysconfdir=/etc/ssh \
--with-pam \
--with-mantype=man \
--with-md5-passwords \
--with-zlib

[darksharavim]make && make install

 

/etc/ssh/sshd_config 설정

[darksharavim]vi /etc/ssh/sshd_config
Port 22
Protocol 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
PermitRootLogin yes
PasswordAuthentication yes
PermitEmptyPasswords no

 

ssh 데몬 자동스크립트 설정(/etc/rc.d/init.d/sshd)

#!/bin/bash
#
# Init file for OpenSSH server daemon
#
# chkconfig: 2345 55 25
# description: OpenSSH server daemon
#
# processname: sshd
# config: /etc/ssh/ssh_host_key
# config: /etc/ssh/ssh_host_key.pub
# config: /etc/ssh/ssh_random_seed
# config: /etc/ssh/sshd_config
# pidfile: /var/run/sshd.pid
# source function library
. /etc/rc.d/init.d/functions
# pull in sysconfig settings
[ -f /etc/sysconfig/sshd ] && . /etc/sysconfig/sshd
RETVAL=0
prog="sshd"
# Some functions to make the below more readable
KEYGEN=/usr/local/openssh/bin/ssh-keygen
SSHD=/usr/local/openssh/sbin/sshd
RSA1_KEY=/etc/ssh/ssh_host_key
RSA_KEY=/etc/ssh/ssh_host_rsa_key
DSA_KEY=/etc/ssh/ssh_host_dsa_key
PID_FILE=/var/run/sshd.pid
do_rsa1_keygen() {
        if [ ! -s $RSA1_KEY ]; then
                echo -n $"Generating SSH1 RSA host key: "
                if $KEYGEN -q -t rsa1 -f $RSA1_KEY -C '' -N '' >&/dev/null; then
                        chmod 600 $RSA1_KEY
                        chmod 644 $RSA1_KEY.pub
                        success $"RSA1 key generation"
                        echo
                else
                        failure $"RSA1 key generation"
                        echo
                        exit 1
                fi
        fi
}
do_rsa_keygen() {
        if [ ! -s $RSA_KEY ]; then
                echo -n $"Generating SSH2 RSA host key: "
                if $KEYGEN -q -t rsa -f $RSA_KEY -C '' -N '' >&/dev/null; then
                        chmod 600 $RSA_KEY
                        chmod 644 $RSA_KEY.pub
                        success $"RSA key generation"
                        echo
                else
                        failure $"RSA key generation"
                        echo
                        exit 1
                fi
        fi
}
do_dsa_keygen() {
        if [ ! -s $DSA_KEY ]; then
                echo -n $"Generating SSH2 DSA host key: "
                if $KEYGEN -q -t dsa -f $DSA_KEY -C '' -N '' >&/dev/null; then
                        chmod 600 $DSA_KEY
                        chmod 644 $DSA_KEY.pub
                        success $"DSA key generation"
                        echo
                else
                        failure $"DSA key generation"
                        echo
                        exit 1
                fi
        fi
}
do_restart_sanity_check()
{
        $SSHD -t
        RETVAL=$?
        if [ ! "$RETVAL" = 0 ]; then
                failure $"Configuration file or keys are invalid"
                echo
        fi
}
start()
{
        # Create keys if necessary
        do_rsa1_keygen
        do_rsa_keygen
        do_dsa_keygen
        echo -n $"Starting $prog:"
        initlog -c "$SSHD $OPTIONS" && success || failure
        RETVAL=$?
        [ "$RETVAL" = 0 ] && touch /var/lock/subsys/sshd
        echo
}
stop()
{
        echo -n $"Stopping $prog:"
        killproc $SSHD -TERM
        RETVAL=$?
        [ "$RETVAL" = 0 ] && rm -f /var/lock/subsys/sshd
        echo
}
reload()
{
        echo -n $"Reloading $prog:"
        killproc $SSHD -HUP
        RETVAL=$?
        echo
}
case "$1" in
        start)
                start
                ;;
        stop)
                stop
                ;;
        restart)
                stop
                start
                ;;
        reload)
                reload
                ;;
        condrestart)
                if [ -f /var/lock/subsys/sshd ] ; then
                        do_restart_sanity_check
                        if [ "$RETVAL" = 0 ] ; then
                                stop
                                # avoid race
                                sleep 3
                                start
                        fi
                fi
                ;;
        status)
                status $SSHD
                RETVAL=$?
                ;;
        *)
                echo $"Usage: $0 {start|stop|restart|reload|condrestart|status}"
                RETVAL=1
esac
exit $RETVAL

 

실행권한설정

[darksharavim]chmod 700 /etc/rc.d/init.d/sshd

 

자동실행

[darksharavim]vi /etc/rc.d/rc.local
/etc/rc.d/init.d/sshd start

 

ssh데몬구동

[darksharavim]/usr/local/openssh/sbin/sshd 또는 /etc/rc.d/init.d/sshd start

 

버전확인

[darksharavim]ssh -V
OpenSSH_5.8p1, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008