Доброго дня, вечера, ночи и возможно утра! Есть у меня Cisco 1721 без модулей. Выполняет роль шлюза для множества подсетей. Обратил внимание на то что с любой подсети с любой машины можно пинговать не только шлюз этой самой подсети но и других то же, а мне этого не хотелось бы. Подскажите как мне реализовать так, что бы каждая
Так же обеспокоился безопасностью сетей вообще. Цель - изоляция друг от друга но если нужно маршрутизация между отдельными IP-адрессами.
Уважаемые мною специалисты, ознакомьтесь с действующим конфигом и поделитесь вашими соображениями! Буду рад нашей дискуссии. =)

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
enable secret 5 ЧЧЧ
enable password ЧЧЧ
!
no aaa new-model
ip subnet-zero
!
!
ip name-server ЧЧ.ЧЧ.ЧЧ.ЧЧ
!
ip flow-cache timeout inactive 60
ip flow-cache timeout active 10
ip cef
!
username ЧЧЧ privilege 15 password 0 ЧЧЧ
username ЧЧЧ privilege 15 password 0 ЧЧЧ
!
!
!
!
interface FastEthernet0
no ip address
ip route-cache policy
ip route-cache flow
ip policy route-map MAP
speed auto
full-duplex
no cdp enable
!
interface FastEthernet0.80
encapsulation dot1Q 80
ip address 10.80.80.252 255.255.255.0
ip nat inside
!
interface FastEthernet0.257
encapsulation dot1Q 257
ip address 192.168.4.37 255.255.255.0
ip nat outside
!
interface FastEthernet0.801
encapsulation dot1Q 801
ip address 10.80.1.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.802
encapsulation dot1Q 802
ip address 10.80.2.1 255.255.255.0
!
interface FastEthernet0.803
encapsulation dot1Q 803
ip address 10.80.3.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.804
encapsulation dot1Q 804
ip address 10.80.4.1 255.255.255.0
!
interface FastEthernet0.805
encapsulation dot1Q 805
ip address 10.80.5.1 255.255.255.0
!
interface FastEthernet0.806
encapsulation dot1Q 806
ip address 10.80.6.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.807
encapsulation dot1Q 807
ip address 10.80.7.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.808
encapsulation dot1Q 808
ip address 10.80.8.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.809
encapsulation dot1Q 809
ip address 10.80.9.1 255.255.255.0
!
interface FastEthernet0.810
encapsulation dot1Q 810
ip address 10.80.10.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.811
encapsulation dot1Q 811
ip address 10.80.11.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.812
encapsulation dot1Q 812
ip address 10.80.12.1 255.255.255.0
!
interface FastEthernet0.813
encapsulation dot1Q 813
ip address 10.80.13.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.814
encapsulation dot1Q 814
ip address 10.80.14.1 255.255.255.0
!
interface FastEthernet0.815
encapsulation dot1Q 815
ip address 10.80.15.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.816
encapsulation dot1Q 816
ip address 10.80.16.1 255.255.255.0
!
interface FastEthernet0.817
encapsulation dot1Q 817
ip address 10.80.17.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.818
encapsulation dot1Q 818
ip address 10.80.18.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.819
encapsulation dot1Q 819
ip address 10.80.19.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.820
encapsulation dot1Q 820
ip address 10.80.20.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.821
encapsulation dot1Q 821
ip address 10.80.21.1 255.255.255.0
!
interface FastEthernet0.822
encapsulation dot1Q 822
ip address 10.80.22.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.823
encapsulation dot1Q 823
ip address 10.80.23.1 255.255.255.0
ip nat inside
!
interface FastEthernet0.850
encapsulation dot1Q 850
ip address 10.80.51.1 255.255.255.0
!
interface FastEthernet0.875
encapsulation dot1Q 875
ip address 10.80.75.1 255.255.255.0
!
interface FastEthernet0.880
!
ip nat pool pool1 192.168.4.200 192.168.4.200 prefix-length 24
ip nat inside source list 5 pool pool1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.4.10
ip route 10.80.1.0 255.255.255.0 192.168.4.10
ip route 10.80.1.144 255.255.255.255 10.80.1.60
ip route 10.80.3.0 255.255.255.0 192.168.4.10
ip route 10.80.6.0 255.255.255.0 192.168.4.10
ip route 10.80.7.0 255.255.255.0 192.168.4.10
ip route 10.80.8.0 255.255.255.0 192.168.4.10
ip route 10.80.10.0 255.255.255.0 192.168.4.10
ip route 10.80.11.0 255.255.255.0 192.168.4.10
ip route 10.80.13.0 255.255.255.0 192.168.4.10
ip route 10.80.15.0 255.255.255.0 192.168.4.10
ip route 10.80.17.0 255.255.255.0 192.168.4.10
ip route 10.80.18.0 255.255.255.0 192.168.4.10
ip route 10.80.19.0 255.255.255.0 192.168.4.10
ip route 10.80.20.0 255.255.255.0 192.168.4.10
ip route 10.80.22.0 255.255.255.0 192.168.4.10
ip route 10.80.23.0 255.255.255.0 192.168.4.10
ip route 10.80.80.0 255.255.255.0 192.168.4.10
ip http server
ip http authentication local
ip flow-export version 5
ip flow-export destination 192.168.4.10 20001
!
access-list 5 permit 10.80.1.0 0.0.0.255
access-list 5 permit 10.80.6.0 0.0.0.255
access-list 5 permit 10.80.7.0 0.0.0.255
access-list 5 permit 10.80.11.0 0.0.0.255
access-list 5 permit 10.80.80.0 0.0.0.255
access-list 5 permit 10.80.19.0 0.0.0.255
access-list 5 permit 10.80.20.0 0.0.0.255
access-list 5 permit 10.80.15.0 0.0.0.255
access-list 5 permit 10.80.17.0 0.0.0.255
access-list 5 permit 10.80.13.0 0.0.0.255
access-list 5 permit 10.80.8.0 0.0.0.255
access-list 5 permit 10.80.23.0 0.0.0.255
access-list 5 permit 10.80.22.0 0.0.0.255
access-list 5 permit 10.80.10.0 0.0.0.255
access-list 5 permit 10.80.18.0 0.0.0.255
access-list 5 permit 10.80.3.0 0.0.0.255
access-list 101 permit ip any 10.80.80.0 0.0.0.255
access-list 101 permit ip any 10.80.1.0 0.0.0.255
access-list 101 permit ip any 10.80.6.0 0.0.0.255
access-list 101 permit ip any 10.80.7.0 0.0.0.255
access-list 101 permit ip any 10.80.11.0 0.0.0.255
access-list 101 permit ip any 10.80.19.0 0.0.0.255
access-list 101 permit ip any 10.80.20.0 0.0.0.255
access-list 101 permit ip any 10.80.15.0 0.0.0.255
access-list 101 permit ip any 10.80.17.0 0.0.0.255
access-list 101 permit ip any 10.80.13.0 0.0.0.255
access-list 101 permit ip any 10.80.8.0 0.0.0.255
access-list 101 permit ip any 10.80.23.0 0.0.0.255
access-list 101 permit ip any 10.80.22.0 0.0.0.255
access-list 101 permit ip any 10.80.10.0 0.0.0.255
access-list 101 permit ip any 10.80.18.0 0.0.0.255
access-list 101 permit ip any 10.80.3.0 0.0.0.255
access-list 102 permit ip host 10.80.17.250 host 10.80.1.60
access-list 102 permit ip host 10.80.1.60 host 10.80.17.250
access-list 103 deny   ip any any
access-list 103 permit ip any host 10.80.1.217
access-list 103 permit ip host 10.80.1.217 any
route-map MAP permit 10
match ip address 101
set interface FastEthernet0
!
snmp-server community public RO
!
line con 0
line aux 0
no exec
line vty 0 4
password rfhbpvf94
login
!
end