CISCO ASA , Configuring VLANs and Sub Interface, Example

Head office  ASA Configuration
Interface	E0/0	Ethernet0/1.1	Ethernet0/1.2
IP Address	10.0.0.1	192.168.1.1	192.168.2.1
Net mask	255.255.255.0	255.255.255.0	255.255.255.0
ISP ROUTER
Interface	E1/0
IP Address	10.0.0.2
Net mask	255.255.255.0
VLAN10  Router
Interface	E1/0
IP Address	192.168.1.10
Net mask	255.255.255.0
VLAN20 Router
Interface	E1/0
IP Address	192.168.2.10
Net mask	255.255.255.0

Cisco ASA Configuration

ciscoasa# show run

: Saved

:

ASA Version 8.0(2)

!

hostname ciscoasa

enable password 8Ry2YjIyt7RRXU24 encrypted

names

!

interface Ethernet0/0

 nameif outside

 security-level 0

 ip address 10.0.0.1 255.255.255.0

no shut

!

interface Ethernet0/1

 no nameif

 no security-level

 no ip address

no shut

!

interface Ethernet0/1.1

 vlan 10

 nameif inside

 security-level 100

 ip address 192.168.1.1 255.255.255.0

no shut

!

interface Ethernet0/1.2

 vlan 20

 nameif inside1

 security-level 90

 ip address 192.168.2.1 255.255.255.0

no shut

!

!

passwd 2KFQnbNIdI.2KYOU encrypted

ftp mode passive

pager lines 24

mtu outside 1500

mtu inside 1500

mtu inside1 1500

no failover

icmp unreachable rate-limit 1 burst-size 1

no asdm history enable

arp timeout 14400

global (outside) 1 interface

nat (inside) 1 192.168.1.0 255.255.255.255

nat (inside1) 1 192.168.2.0 255.255.255.255

route outside 0.0.0.0 0.0.0.0 10.0.0.2

timeout xlate 3:00:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00

timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00

timeout uauth 0:05:00 absolute

dynamic-access-policy-record DfltAccessPolicy

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

no crypto isakmp nat-traversal

telnet timeout 5

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics access-list

!

!

prompt hostname context

Cryptochecksum:00000000000000000000000000000000

: end

ciscoasa#

ISP Router Configuration

Hostname ISP

!

interface Ethernet1/0

 ip address 10.0.0.2 255.255.255.0

 no shut

!

ip route 0.0.0.0 0.0.0.0 10.0.0.1

VLAN10 ROUTER CONFIGURATION

hostname vlan10

!

interface Ethernet1/0

 ip address 192.168.1.10 255.255.255.0

 no shut

!

ip route 0.0.0.0 0.0.0.0 192.168.1.1

VLAN20 ROUTER CONFIGURATION

hostname vlan20

!

interface Ethernet1/0

 ip address 192.168.2.10 255.255.255.0

 no shut

!

ip route 0.0.0.0 0.0.0.0 192.168.2.1