Oʻzbеkiston rеspublikasi axborot tеxnologiyalari va kommunikatsiyalarini rivojlantirish vazirligi
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| Amaliy qism
Amaliy qismda Cisco paket tracer simulyatorida VPN texnologiyasini sozlash koʻrib chiqilgan. VPNni sozlash uchun quyidagi koʻrsatmalarga amal qilish kerak. 1. Bosh ofis marshrutizatori, filial marshrutizatori va ular oʻrtasida xizmat koʻrsatuvchi Internet-provayder marshrutizatori joylashgan tarmoq topologiyasi yaratiladi (13.2-rasm). 2. Belgilangan manzildan chiqadigan barcha marshrutizatorlarni sozlang. Quyida har bir marshrutizator uchun buyruqlar toʻplami berilgan. 13.2-rasm. Tadqiq qilinayotgan tarmoq topologiyasi ROUTER_1 ga kiritiladigan buyruqlar ketma-ketligi. Router>enable Router#conf t 161 Router(config)#int fa 0/0 Router(config-if)#no shut Router(config-if)#ip nat inside Router(config-if)#ip address 192.168.1.1 255.255.255.0 Router(config)#int fa 0/1 Router(config-if)#no shut Router(config-if)#ip address 1.1.1.1 255.255.255.252 Router(config-if)#ip nat outside Router(config-if)#exit Router(config)#ip access-list extended for-nat Router(config-ext-nacl)#deny ip 192.168.2.0 0.0.0.255 192.168.3.0 0.0.0.255 Router(config-ext-nacl)#permit ip 192.168.2.0 0.0.0.255 any Router(config-ext-nacl)#exit Router(config)#ip nat inside source list for-nat int fa 0/1 overload Router(config)#ip route 0.0.0.0 0.0.0.0 1.1.1.2 Router(config)#ip dhcp pool vl2 Router(dhcp-config)#network 192.168.2.0 255.255.255.0 Router(dhcp-config)#default-router 192.168.2.1 Router(dhcp-config)#dns-server 8.8.8.8 Router(dhcp-config)#exit Router(config)#crypto isakmp policy 1 Router(config-isakmp)#encryption aes Router(config-isakmp)#hash md5 Router(config-isakmp)#authentication pre-share Router(config-isakmp)#group 2 Router(config)#crypto isakmp key 123 address 2.2.2.1 Router(config)#crypto ipsec transform-set ts esp-aes esp-md5-hmac Router(config)#ip access-list extended for-vpn Router(config-ext-nacl)#permit ip 192.168.2.0 0.0.0.255 192.168.3.0 0.0.0.255 Router(config-ext-nacl)#exit Router(config)#crypto map kriptokarta 10 ipsec-isakmp Router(config-crypto-map)#match address for-vpn Router(config-crypto-map)#set peer 2.2.2.1 Router(config-crypto-map)#set transform-set ts Router(config-crypto-map)#exit Router(config)#int fa 0/1 Router(config-if)#crypto map kriptokarta *Jan 3 07:16:26.785: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is ON 162 Router(config-if)#exit (VPN qurish jarayoni) ROUTER_2 kiritiladigan buyruqlar ketma-ketligi. Router>enable Router#conf t Router(config)#int fa 0/0 Router(config-if)#no shut Router(config-if)#ip nat inside Router(config-if)#ip address 192.168.3.1 255.255.255.0 Router(config-if)#exit Router(config)#int fa 0/1 Router(config-if)#no shut Router(config-if)#ip address 2.2.2.1 255.255.255.0 Router(config-if)#ip nat outside Router(config-if)#exit Router(config)#ip access-list extended for-nat Router(config-ext-nacl)#deny ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255 Router(config-ext-nacl)#permit ip 192.168.3.0 0.0.0.255 any Router(config-ext-nacl)#exit Router(config)#ip nat inside source list for-nat int fa 0/1 overload Router(config)#ip route 0.0.0.0 0.0.0.0 2.2.2.2 Router(config)#ip dhcp pool vl3 Router(dhcp-config)#network 192.168.3.0 255.255.255.0 Router(dhcp-config)#default-router 192.168.3.1 Router(dhcp-config)#dns-server 8.8.8.8 Router(dhcp-config)#exit Router(config)#crypto isakmp policy 1 Router(config-isakmp)#encryption aes Router(config-isakmp)#hash md5 Router(config-isakmp)#authentication pre-share Router(config-isakmp)#group 2 Router(config-isakmp)#exit Router(config)#crypto isakmp key 123 address 1.1.1.1 Router(config)#crypto ipsec transform-set ts esp-aes esp-md5-hmac Router(config)#ip access-list extended for-vpn Router(config-ext-nacl)#permit ip 192.168.3.0 0.0.0.255 192.168.2.0 0.0.0.255 Router(config-ext-nacl)#exit Router(config)#crypto map kriptokarta 10 ipsec-isakmp 163 Router(config-crypto-map)#match address for-vpn Router(config-crypto-map)#set peer 1.1.1.1 Router(config-crypto-map)#set transform-set ts Router(config-crypto-map)#exit Router(config)#int fa 0/1 Router(config-if)#crypto map kriptokarta *Jan 3 07:16:26.785: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is ON Router(config-if)#exit ROUTER_3 kiritiladigan buyruqlar ketma-ketligi. Router>enable Router#conf t Router(config)#int fa 0/0 Router(config-if)#no shut Router(config-if)#ip address 1.1.1.2 255.255.255.252 Router(config)#int fa 0/1 Router(config-if)#no shut Router(config-if)#ip address 2.2.2.2 255.255.255.0 Router(config-if)#exit 3. DHCP protokoli ishlashini tekshirish (13.3-rasm). 13.3-rasm. DHCP protokoli funksiyasini tekshirish 4. Bosh ofis va filial oʻrtasida aloqani ICMP protokolidan foydalanib tekshirish (13.4-rasm). 164 13.4-rasm. Korxonaning idoralari oʻrtasidagi aloqani tekshirish 5. VPN kanali orqali uzatiladigan paketlar statistikasi haqida ma'lumot olish uchun Show crypto ipsec sa buyrugʻidan foydalaniladi (13.5-rasm). 13.5-rasm. VPN kanali orqali yuborilgan ma'lumot statistikasi |