Python小程序(三):自动读取secure文件,并封禁异常IP地址
2022/8/24 1:23:18
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Python小程序(三):自动读取secure文件,并封禁异常IP地址
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#! python # -*- coding:utf-8 -*- # 时间:20220812 # 作者:ColoFly # 转载请注明出处及作者
import os,re,time,datetime,openpyxl from collections import Counter sec_log = open(r'secure', 'r', encoding='utf-8') sec_line = sec_log.readlines() End_time = datetime.datetime(2033, 12, 31, 23, 59, 59) #循环结束时间 #正则表达式,用于匹配IP地址 IpRegex = re.compile(r'''( (\d{1,3}) #IP address A class \. (\d{1,3}) #IP address B class \. (\d{1,3}) #IP address C class \. (\d{1,3}) #IP address D class )''', re.VERBOSE) Col_A = 'A' #定义表格prohibit_ip列号 Col_B = 'B' #定义表格prohibit_time列号 if __name__ == '__main__': if os.path.exists('prohibit_ip.xlsx'): print('prohibit_ip.xlsx is exists') else: table = ["prohibit_ip", "prohibit_time"] wb = openpyxl.Workbook() sheet = wb.active sheet.title = "Ip_sheet" row = 1 for i in range(len(table)): sheet.cell(row, i+1, table[i]) wb.save(filename = "prohibit_ip.xlsx") print('prohibit_ip.xlsx created successfully') file_location = 'prohibit_ip.xlsx' #定义存放文件名称 workbook = openpyxl.load_workbook('prohibit_ip.xlsx') #加载表格簿 Ip_sheet = workbook.active #读取表格 while datetime.datetime.now() < End_time: #读取每一行中是否存在'Failed password',如果存在则循环这一行中内容查找IP地址。因为相关文件 #来自Linux /var/log/secure文件中,就不再使用IP模块进行IP地址校验。 file_location = 'prohibit_ip.xlsx' # 定义存放文件名称 workbook = openpyxl.load_workbook('prohibit_ip.xlsx') # 加载表格簿 Ip_sheet = workbook.active # 读取表格 Ip_list = {} matches = [] for line in sec_line: if 'Failed password' in line: for Ip in IpRegex.findall(line): matches.append(Ip[0]) #print(matches) Ip_count = Counter(matches) print(Ip_count) for k,v in Ip_count.items(): #读取单元格 if k in Ip_list: print('Ok') continue else: #print('False') if int(v) > 3: print('iptables -A INPUT -p tcp -s ' + k + ' --dport 22 -j DROP') Ip_sheet[Col_A + str(Max_Row)] = k Ip_sheet[Col_B + str(Max_Row)] = datetime.datetime.now() workbook.save('prohibit_ip.xlsx') Max_Row = Ip_sheet.max_row + 1 Max_Col = Ip_sheet.max_column + 1 for Row in range(2, Max_Row): Ip_date = Ip_sheet[Col_A + str(Row)].value Ip_list.update({Ip_date: 1}) #print(Ip_list) #print(date1) time.sleep(5)
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