특정 IP만 SSH 접속 허용하기

특정 IP만 SSH 접속 허용하기

1 방법: hosts.allow, hosts.deny 설정

[root@jmnote ~]# cat /var/log/secure.* | grep Accepted | awk '{print $9"\t"$11"\t"$14}' | sort | uniq
root    113.157.124.168 ssh2
root    135.79.246.80   ssh2
root    135.79.246.217  ssh2

/etc/hosts.allow 수정

#
# hosts.allow	This file describes the names of the hosts which are
#		allowed to use the local INET services, as decided
#		by the '/usr/sbin/tcpd' server.
#
sshd: 113.157.124.168, 135.79.246.

→ 113.157.124.168와 135.79.246.XXX 대역을 허용

/etc/hosts.deny 수정

#
# hosts.deny	This file describes the names of the hosts which are
#		*not* allowed to use the local INET services, as decided
#		by the '/usr/sbin/tcpd' server.
#
# The portmap line is redundant, but it is left to remind you that
# the new secure portmap uses hosts.deny and hosts.allow.  In particular
# you should know that NFS uses portmap!
sshd: ALL

→ 나머지는 모두 ssh 접근 불가

sshd 재시작

sshd를 재시작해야 적용된다.

[root@jmnote ~]# service sshd restart
Stopping sshd:                                             [  OK  ]
Starting sshd:                                             [  OK  ]

2 같이 보기

3 참고 자료