×ðÁú¿­Ê±

ÏÂÁîÐй¤¾ßÊÇÄãµÄ·ÀÓùÎäÆ÷£º±£»¤ÄãµÄLinuxЧÀÍÆ÷

ÏÂÁîÐй¤¾ßÊÇÄãµÄ·ÀÓùÎäÆ÷£º±£»¤ÄãµÄLinuxЧÀÍÆ÷

Ëæ×Å»¥ÁªÍøµÄÉú³¤ £¬Linux²Ù×÷ϵͳÔÚЧÀÍÆ÷ÁìÓòÖеÄÆÕ¼°ÂÊÔ½À´Ô½¸ß¡£È»¶ø £¬LinuxЧÀÍÆ÷Ò²ÃæÁÙ×ÅÖÖÖÖÍøÂçÇå¾²Íþв¡£ÎªÁ˱£»¤ÄãµÄЧÀÍÆ÷ÃâÊܺڿ͹¥»÷ºÍ¶ñÒâÈí¼þµÄË𺦠£¬Ñ§»áʹÓÃÏÂÁîÐй¤¾ßÊDZز»¿ÉÉٵġ£

±¾ÎĽ«ÏÈÈÝһЩ³£ÓõÄÏÂÁîÐй¤¾ßºÍÊÖÒÕ £¬×ÊÖúÄã±£»¤ÄãµÄLinuxЧÀÍÆ÷¡£

·À»ðǽÖÎÀí

·À»ðǽÊDZ£»¤Ð§ÀÍÆ÷ÃâÊÜδÊÚȨ»á¼ûµÄµÚÒ»µÀ·ÀµØ¡£ÔÚLinuxÖÐ £¬ÎÒÃÇ¿ÉÒÔʹÓÃiptablesÏÂÁîÀ´ÉèÖúÍÖÎÀí·À»ðǽ¹æÔò¡£ÏÂÃæÊÇһЩʾÀý£º

# ÔÊÐíÌض¨IP»á¼ûSSH
iptables -A INPUT -s 192.168.1.1 -p tcp --dport 22 -j ACCEPT

# ×èÖ¹ËùÓÐÆäËûSSH»á¼û
iptables -A INPUT -p tcp --dport 22 -j DROP

# ÔÊÐíPing
iptables -A INPUT -p icmp --icmp-type 8 -j ACCEPT

µÇ¼ºó¸´ÖÆ

ÕâЩ¹æÔò½«ÔÊÐíIPΪ192.168.1.1µÄÖ÷ʱ»ú¼ûSSH £¬²¢×èÖ¹ÆäËûIP¶ÔSSHµÄ»á¼û¡£Í¬Ê± £¬ÔÊÐíICMP PingÇëÇó¡£

ÈëÇÖ¼ì²âϵͳ£¨Intrusion Detection System, IDS£©

IDS¿ÉÒÔ¼à¿ØÍøÂçÁ÷Á¿ £¬²¢·¢Ã÷ÈκÎÒì³£ÐÐΪ»òDZÔڵĹ¥»÷¡£snortÊÇÒ»¸öÖøÃûµÄ¿ªÔ´IDS¹¤¾ß¡£ÏÂÃæÊÇÒ»¸öʾÀý£º

# ×°ÖÃsnort
sudo apt-get install snort

# Æô¶¯snort
sudo snort -c /etc/snort/snort.conf

µÇ¼ºó¸´ÖÆ

ͨ¹ý×°ÖúÍÉèÖÃsnort £¬Äã¿ÉÒÔÔÚLinuxЧÀÍÆ÷ÉÏʵÏÖÈëÇÖ¼ì²â¹¦Ð§¡£

ÈÕÖ¾¼à¿Ø

ͨ¹ý¼à¿ØЧÀÍÆ÷µÄÈÕÖ¾Îļþ £¬Äã¿ÉÒÔʵʱ·¢Ã÷Òì³£Ô˶¯»ò¹¥»÷¡£³£¼ûµÄЧÀÍÆ÷ÈÕÖ¾Îļþ°üÀ¨/var/log/syslog¡¢/var/log/auth.logµÈ¡£Äã¿ÉÒÔʹÓÃgrepÏÂÁî¹ýÂËÈÕÖ¾ÎļþÄÚÈÝ £¬ÀýÈ磺

# ²éÕҵǼʧ°ÜµÄ¼Í¼
grep 'Failed' /var/log/auth.log

# ²éÕÒÀֳɵǼµÄ¼Í¼
grep 'Accepted' /var/log/auth.log

µÇ¼ºó¸´ÖÆ

ͨ¹ý²éÕÒÒªº¦´Ê £¬Äã¿ÉÒÔ·¢Ã÷ÊÇ·ñÓÐÒì³£µÄµÇ¼ʵÑé¡£

׼ʱʹÃü

׼ʱʹÃü£¨Cron Jobs£©ÊÇLinuxÖг£ÓõÄ×Ô¶¯»¯¹¤¾ß¡£Í¨¹ýÉèÖÃ׼ʱʹÃü £¬Äã¿ÉÒÔ°´ÆÚÔËÐÐһЩ¾ç±¾»òÏÂÁî £¬¼á³ÖЧÀÍÆ÷µÄÇå¾²¡£ÏÂÃæÊÇÒ»¸öʾÀý£º

# ±à¼­×¼Ê±Ê¹ÃüÉèÖÃ
crontab -e

# ÔÚÉèÖÃÎļþÖÐÌí¼ÓÒÔÏÂÄÚÈÝ£¬ÌìÌìÖ´ÐÐÒ»´Î
0 0 * * * /path/to/script.sh

µÇ¼ºó¸´ÖÆ

ÔÚÉÏÊöʾÀýÖÐ £¬¾ç±¾script.sh½«ÔÚÌìÌìÎçÒ¹Ö´ÐС£

ÃÜÂëÕ½ÂÔ

ÉèÖÃÇ¿ÃÜÂëÕ½ÂÔ¿ÉÒÔ±ÜÃâ±»ÍƲâ»ò±©Á¦Æƽâ¡£Äã¿ÉÒÔʹÓÃpasswdÏÂÁîÐÞ¸ÄÓû§ÃÜÂë £¬²¢Ê¹ÓÃÃÜÂëÕ½ÂÔ¹¤¾ßÔöÇ¿ÃÜÂëÇ¿¶È¡£ÀýÈç £¬Ê¹ÓÃpwqcheck¹¤¾ß£º

# ×°ÖÃpwqcheck
sudo apt-get install libpam-pwquality

# ±à¼­ÃÜÂëÕ½ÂÔÉèÖÃ
sudo nano /etc/pam.d/common-password

µÇ¼ºó¸´ÖÆ

ÔÚÉèÖÃÎļþÖÐ £¬Äã¿ÉÒÔÉèÖÃÃÜÂëµÄ×îС³¤¶È¡¢ÒªÇó°üÀ¨µÄ×Ö·ûÀàÐ͵È¡£

×ܽá

ÏÂÁîÐй¤¾ßÊDZ£»¤LinuxЧÀÍÆ÷µÄÖ÷ÒªÎäÆ÷¡£Í¨¹ýÉèÖ÷À»ðǽ¹æÔò¡¢Ê¹ÓÃIDS¹¤¾ß¡¢¼à¿ØÈÕÖ¾¡¢ÉèÖÃ׼ʱʹÃüÒÔ¼°Ç¿»¯ÃÜÂëÕ½ÂÔ £¬Äã¿ÉÒÔÔöÇ¿¶ÔЧÀÍÆ÷µÄ±£»¤¡£±ðµÄ £¬Ïàʶ²¢ÊµÊ±¸üÐÂÓëЧÀÍÆ÷Ïà¹ØµÄÇå¾²²¹¶¡Ò²ÊǺÜÊÇÖ÷ÒªµÄ¡£

È»¶ø £¬ÕâÖ»ÊÇÈëÃż¶µÄÇå¾²²½·¥¡£ÎªÁ˸üÖÜÈ«µØ±£»¤ÄãµÄЧÀÍÆ÷ £¬Ä㻹ÐèÒªÉîÈëѧϰÍøÂçÇå¾²µÄ»ù±¾ÖªÊ¶ £¬ÒÔ¼°ÆäËûµÄ¸ß¼¶ÊÖÒÕ¡£

ÓÐÁËÕâЩ·ÀÓù¹¤¾ßºÍ֪ʶ £¬ÐÅÍÐÄã¿ÉÒÔ¸üºÃµØ±£»¤ÄãµÄLinuxЧÀÍÆ÷ £¬µÖÓùÖÖÖÖÇå¾²Íþв¡£

ÒÔÉϾÍÊÇÏÂÁîÐй¤¾ßÊÇÄãµÄ·ÀÓùÎäÆ÷£º±£»¤ÄãµÄLinuxЧÀÍÆ÷µÄÏêϸÄÚÈÝ £¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡

ÃâÔð˵Ã÷£ºÒÔÉÏչʾÄÚÈÝȪԴÓÚÏàÖúýÌå¡¢ÆóÒµ»ú¹¹¡¢ÍøÓÑÌṩ»òÍøÂçÍøÂçÕûÀí £¬°æȨÕùÒéÓë±¾Õ¾ÎÞ¹Ø £¬ÎÄÕÂÉæ¼°¿´·¨Óë¿´·¨²»´ú±í×ðÁú¿­Ê±ÂËÓÍ»úÍø¹Ù·½Ì¬¶È £¬Çë¶ÁÕß½ö×ö²Î¿¼¡£±¾ÎĽӴýתÔØ £¬×ªÔØÇë˵Ã÷À´ÓÉ¡£ÈôÄúÒÔΪ±¾ÎÄÇÖÕ¼ÁËÄúµÄ°æȨÐÅÏ¢ £¬»òÄú·¢Ã÷¸ÃÄÚÈÝÓÐÈκÎÉæ¼°ÓÐÎ¥¹«µÂ¡¢Ã°·¸Ö´·¨µÈÎ¥·¨ÐÅÏ¢ £¬ÇëÄúÁ¬Ã¦ÁªÏµ×ðÁú¿­Ê±ÊµÊ±ÐÞÕý»òɾ³ý¡£

Ïà¹ØÐÂÎÅ

ÁªÏµ×ðÁú¿­Ê±

13452372176

¿É΢ÐÅÔÚÏß×Éѯ

ÊÂÇéʱ¼ä£ºÖÜÒ»ÖÁÖÜÎå £¬9:30-18:30 £¬½ÚãåÈÕÐÝÏ¢

QR code
¡¾ÍøÕ¾µØͼ¡¿¡¾sitemap¡¿