ubuntu查看尝试登录服务器的ip,一般用来查看攻击ip来源:
grep \"Failed password for root\" /var/log/auth.log | awk \'{print $11}\' | sort | uniq -c | sort -nr | more
centos查看尝试登录服务器的ip,一般用来查看攻击ip来源:
cat /var/log/secure | awk \'/Failed/{print $(NF-3)}\'| sort| uniq -c| awk \'{print $2\"=\"$1;}\'
然后将以上ip加入/etc/hosts.deny 文件,格式:all:114.115.116.117