3-laboratoriya ishi tarmoq qurilmalari xavfsizligini tahlil qilish


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Gafurova Husnobod TARMOQ HAVFSIZLIGI

Ishni bajarish tartibi

  1. Eng avval router 1 ni sozlab olamaiz va parol o’rnatamiz.


Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname husnobod
husnobod(config)#enable password 1234
husnobod(config)#do wr
Building configuration...
[OK]
husnobod(config)#line co
husnobod(config)#line console 0
husnobod(config-line)#password 1234
husnobod(config-line)#login
husnobod(config-line)#do wr

  1. So’ngra o’rnatilgan parolni tekshirib ko’ramiz.

husnobod(config-line)#exit
husnobod(config)#ex
husnobod#
husnobod#reload
husnobod(config-line)#exit
husnobod(config)#ex
husnobod#

Press RETURN to get started!


User Access Verification


User Access Verification


Password:


husnobod>en
Password:
husnobod#


Muvofiqiyatli ishladi endi esa marshrutizatorning konfiguratsion registrning qiymatini aniqlab olamiz. Buning uchun Roterga show version buyrug’I beriladi.
Muvofiqiyatli ishladi endi esa marshrutizatorning konfiguratsion registrning qiymatini aniqlab olamiz. Buning uchun Roterga show version buyrug’I beriladi.

Marshrutizatorning konfiguratsion registrning qiymati 0X2102 ekan.



  1. Endi unutilgan parolni o`zgartirish jarayoni bosqichma-bosqich bajarib ko’ramiz

    1. Birinchi navbatda marshrutizatorga konsol kabel orqali ulanish

lozim (Rollover deb ham nomlanadi).



Konsol orqali ulaniladi va keyingi jarayonlarning barchasi konsol port orqali


amalga oshiramiz.

    1. Xizmat ko`rsatish maqsadlarida ishlatiladigan – ROMMON rejimiga marshrutizatorni o’tkazib olishimis kerak buning uchun marshrutizatorga reload buyrug‘i berildi

va uning ishga tushish jarayonida CTRL+C klavishlari kombinatsiyasi bosiladi natijada Romon rejimi ishga tushadi. So‘ngra confreg 0x2142 buyrug‘I kiritiladi.

    1. Marshrutizatorni ROMMON rejimidan oddiy ishchi rejimga o’tkazish uchun uni qayta ishga tushirish kerak bo’ladi. Bunda biz ikkita yo’limiz bor

—marshurtizatorni elektr quvvatidan uzib uni qaytadan ulash.
— marshurtizatorga resed buyrug‘ini berish.
Men 2-chi usulni tanladim va marshurtizatorga resed buyrug‘ini berdim.

5 .1. Marshrutizator yondgandan so’ng unga quyidagi buyruqlar ketma-ketligi kiritiladi.

Would you like to enter the initial configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>
Router>
Router>
Router>
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#conf
Router(config)#config-register 0x2102
Router(config)#do wr
Building configuration...
[OK]

Va marshrutizator qayta sozlashga tayyor.


5 .1. Marshrutizator yondgandan so’ng unga quyidagi buyruqlar ketma-ketligi kiritiladi.
Would you like to enter the initial configuration dialog? [yes/no]: no
Press RETURN to get started!
Router>
Router>
Router>
Router>
Router>en
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#conf
Router(config)#config-register 0x2102
Router(config)#do wr
Building configuration...
[OK]


Va marshrutizator qayta sozlashga tayyor.




Cisco Catalyst kommutatorlarida parolni olib tashlash (сброс)



  1. Cisco Catalyst kommutatorlarida parolni olib tashlash uchun qurilmaga fizik kirish imkoniyati kerak. Kommutatorga konsol kabeli orqali ulaniladi, tok energiyasi manbasidan o`chiriladi va qayta ishga tushiriladi, ishga tushirilish vaqtida oldi panelidagi “MODE” tugmasi 3-sekund bosib turiladi.




  1. Hosil bo‘lgan oynadan ok buyrug‘I tanlanadi.




  1. Quiyidagi amallar ketma-ketligi bajariladi.

s
witch: flash_init
switch: rename flash:config.text flash:config.old
switch: boot
Switch>en
Switch#

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