Linux下防止未授权IP使用ssh服务方法一iptables -A INPUT -p tcp -s 192.168.0.0/24 --destination-port 22 -j ACCEPTiptables -A INPUT -p tcp -s 192.168.1.0/24 --destination-port 22 -j ACCEPTiptables -A INPUT -p tcp -s ! 127.0.0.1 --destination-port 22 -j DROP方法二[root@nihao ~]# more /etc/hosts.deny## 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 : deny[root@nihao ~]# more /etc/hosts.allow## 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: 192.168.0.230 :allow这里写允许的ip或者网段经验总结:Linux桌面使用技巧集锦Termcolor —— 用 Python 打出彩色Linux终端信息相关资讯 SSH Linux安全
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