12-04-2005 06:10 PM - edited 03-09-2019 01:15 PM
i find in cisco site document about transparent mode .link as follow:
it said:
The Firewall Services Module (FWSM) connects the same network on its inside and outside ports but uses different VLANs on the inside and outside
how can i config two different vlan belong to same network?
is there somebody give me a example.
thank you very much
12-05-2005 03:43 PM
basically what they are talking about is having two layer 2 vlans but 1 layer 3 vlan.
so in terms of Layer3 both inside and outside have same subnet address,
but inside and outside on layer 2 are different, hence the concept of transparent firewall (transparent in the sense of layer 3)
12-05-2005 06:42 PM
Hi,this is sample configuration.
6509A:
vlan 256
name FWoutside
int vlan 256
ip addr 98.1.1.252 255.255.255.0
6509B:
vlan 255
name FWinside
int vlan 255
ip addr 98.1.1.251 255.255.255.0
firewall module 3 vlan-group 16,32
firewall vlan-group 16 255
firewall vlan-group 32 256
FW:
firewall transparent
nameif vlan256 outside security0
nameif vlan255 inside security100
access-list ACL_IN extended permit ip any any
access-group ACL_IN in interface outside
access-group ACL_IN in interface inside
6509B:
6509B#ping 98.1.1.252
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 98.1.1.252, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
6509B#
01-14-2011 11:18 AM
What specifically would you want to clarify?
PK
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