1、需要root用户执行
2、将会在脚本所在目录生成hosts.deny文件，里面存数据
脚本奉上【本人菜鸟，千万不要喷啊】：
#!/usr/bin/python
# _*_coding:utf-8 _*_
import time
import re
import sys
import os
from datetime import date
logfile = r‘/var/log/secure‘
current_path = sys.path[0]
denyfile = r‘/‘+current_path+‘/hosts.deny‘
months_31 = [‘Jan‘,‘Mar‘,‘May‘,‘Jul‘,‘Aug‘,‘Oct‘,‘Dec‘]
months_30 = [‘Apr‘,‘Jun‘,‘Sep‘,‘Nov‘]
month_28or29 = ‘Feb‘
months = {
‘Jan‘:1,‘Feb‘:2,‘Mar‘:3,‘Apr‘:4,‘May‘:5,‘Jun‘:6,
‘Jul‘:7,‘Aug‘:8,‘Sep‘:9,‘Oct‘:10,‘Nov‘:11,‘Dec‘:12
}
month_days = {}
for mon in months_31:
month_days[mon] = 31
for mon in months_30:
month_days[mon] = 30
if date.isocalendar(date.today())[0] % 4 == 0:
month_days[month_28or29] = 29
else:
month_days[month_28or29] = 28
def copyFiles(sourceFile, targetFile):
open(targetFile, "wb").write(open(sourceFile, "rb").read())
def search_source():
t = date.today()
month = t.strftime(‘%b‘)
day = t.strftime(‘%d‘)
pat = re.compile(‘.+sshd.+Failed password.+ (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}) .+‘)
lines = []
f = open(logfile,‘r‘)
for line in f:
if line.split()[0] == month and (int(day) - int(line.split()[1])) < 7 and (int(day) - int(line.split()[1])) >= 0:
if re.search(pat,line):
lines.append(line)
elif (months[month] - months[line.split()[0]]) == 1 or (months[month] - months[line.split()[0]]) == -11:
if (int(day) + month_days[line.split()[0]] - int(line.split()[1])) < 7 and re.search(pat,line):
lines.append(line)
return lines
def count_ips(lines):
count = {}
if len(lines) == 0:
print ‘No one use ssh and failed.‘
raise SystemExit
pat = re.compile(‘ (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}) ‘)
for line in lines:
ip = re.findall(pat,line)[0]
if ip in count:
count[ip] += 1
else:
count[ip] = 1
return count
def deny_ips(count):
f = open(denyfile,‘w‘)
valve = 50
for ip in count:
if count[ip] >= valve:
word = ‘ALL: %s #failed %d times in a week.\n‘ % (ip,count[ip])
f.write(word)
f.close()
def main():
current_path=sys.path[0]
if os.path.isfile(current_path+"/hosts.deny"):
copyFiles(current_path+"/hosts.deny", current_path+"/hosts.deny."+str(int(time.time())))
lines = search_source()
count = count_ips(lines)
deny_ips(count)
if __name__ == ‘__main__‘:
main() 时间： 2024-11-09 00:27:50