“ Tarmoq xavfsizligi

Cisco ASA Modellari 
Cisco ASA 5510 - masofadan turib ishlashni hisobga oladigan kichik va o'rta biznes korxonalar 
uchun mukammal model, bu iqtisodiy jihatdan xavfsiz yechim hamdir. Barcha xavfsizlik 
xizmatlarini onlayn boshqarish platformasi orqali boshqarish mumkin. Cisco 5510-da siz kutgan 
yuqori samarali firewall va tarmoq xavfsizligi yechimlari mavjud. Xavfsizlik xizmatlari moduli 
buzilishning oldini olish imkoniyatlarini to'liq boshqarish imkoniyatini beradi va mustahkam 
antivirus xizmatini bajaradi. Biznes kelajakda kengayishini inobatga olgan holda himoya qilish 
mexanizmlarini sinflarga ajratadi, shuning uchun Cisco ASA 5510 kompaniyaga kerak bo'lganda 
funksiyalarni kengaytirishga imkon beradi. 
Ishni bajarish tartibi 
1.
Cisco packet tracer dasturi ishga tushiriladi. 
2.
Laboratoriya ishi uchun cisco 2960 kommutatori, 2911 marshruzatori, ASA0 5505 firewalli, 
server va kompyuterlar tanlanadi. 
3.
Quyida keltirilgan topologiya quriladi. 
4.
Qurilgan topologiya testlab ko`riladi. 

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83 
15.2-rasm. Tadqiq qilinayotgan tarmoq topologiyasi. 
Qurilgan topologiyada quyidagi buyruqlar teriladi: 
ASA0 ga quyidagi buyruqlar ketma ketligi kiritiladi. 
ciscoasa>en 
ciscoasa#conf t 
ciscoasa(config)#interface vlan 1 
ciscoasa(config-if)#no ip address
ciscoasa(config-if)#ip address 192.168.100.1 255.255.255.0 
ciscoasa(config-if)#exit
ciscoasa(config)#dhcpd address 192.168.100.22-192.168.100.50 inside
ciscoasa(config)#dhcpd dns 8.8.8.8 
ciscoasa(config)#enable password salom 
ciscoasa(config)#username elshod password admin 
ciscoasa(config)#ssh 192.168.100.22 255.255.255.255 inside
ciscoasa(config)#ssh timeout 1 
ciscoasa(config)#aaa authentication ssh console LOCAL 
ciscoasa(config)#interface vlan 2 
ciscoasa(config-if)# no ip address
ciscoasa(config-if)#ip address 195.158.0.2 255.255.255.252 
ciscoasa(config-if)#exit
ciscoasa(config)#route outside 0.0.0.0 0.0.0.0 195.158.0.1 
ciscoasa(config)#object network NET 
ciscoasa(config-network-object)#subnet 192.168.100.0 255.255.255.0 
ciscoasa(config-network-object)#nat (inside,outside) dynamic interface
ciscoasa(config-network-object)#ex 
ciscoasa#conf t 
ciscoasa(config)#access-list NAT extended permit icmp any any 
ciscoasa(config)#access-group NAT in interface outside
 
ROUTERga quyida buyruqlar ketma ketligi kiritiladi. 
continue with configuration dialog? [yes/no]: no 
Router>enable
Router#conf t 
Router(config)#interface gigabitEthernet 0/0 
Router(config-if)#no shutdown
Router(config-if)#exit

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84 
Router(config)#hostname IP 
IP(config)#interface gigabitEthernet 0/0 
IP(config-if)#ip address 195.158.0.1 255.255.255.252 
IP(config-if)#ex 
IP(config)#interface gigabitEthernet 0/1 
IP(config-if)#no shutdown
IP(config-if)#ip address 8.8.8.1 255.255.255.0 
Router(config-if)#do wr 
Router(config-if)#exit 
15.3-rasm Server ga IP manzil berish. 
15.4-rasm. Hostning ASA firewall orqali avtomatik IP manzil olishi. 
15.5-rasm. SSH protokoli yordamida firewallga masofaviy ulanish. 

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85 
15.6-rasm. Qurilgan topologiyani testlab ko
’
rish.