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ASA 5505 dmz newbie

robbhanMid
Level 1
Level 1

Can't seem to figure out how to build a DMZ for our webserver. All trafic gets denied by the default incoming rule.

I want all incoming http/80 requests to the external ip (192.168.10.35 for now) to be forwarded to the www-server in the dmz 176.16.3.15.

I think i have the address translation up and running but no matter what incoming firewall rule i create, trafic gets blocked. I must be missing something obvious here..... any ideas:

ASA Version 8.0(3)

!

hostname *

domain-name *

enable password *

names

!

interface Vlan1

nameif inside

security-level 100

ip address 192.168.1.1 255.255.255.0

!

interface Vlan2

nameif outside

security-level 0

ip address dhcp setroute

!

interface Vlan3

nameif dmz-office

security-level 50

ip address 172.16.3.1 255.255.255.0

!

interface Ethernet0/0

switchport access vlan 2

!

interface Ethernet0/1

!

interface Ethernet0/2

!

interface Ethernet0/3

!

interface Ethernet0/4

!

interface Ethernet0/5

switchport access vlan 3

!

interface Ethernet0/6

!

interface Ethernet0/7

!

passwd encrypted

ftp mode passive

dns server-group DefaultDNS

domain-name

object-group protocol TCPUDP

protocol-object udp

protocol-object tcp

access-list outside-acl extended permit tcp any host 192.168.10.35 eq www

access-list outside_access_in extended permit tcp any host 192.168.10.35 eq www

access-list l2l_list extended permit ip host 192.168.10.35 host 192.168.10.14

pager lines 24

logging enable

logging asdm informational

mtu inside 1500

mtu outside 1500

mtu dmz-office 1500

no failover

icmp unreachable rate-limit 1 burst-size 1

asdm image disk0:/asdm-603.bin

no asdm history enable

arp timeout 14400

global (outside) 1 interface

nat (inside) 1 0.0.0.0 0.0.0.0

static (outside,inside) tcp 192.168.1.2 www 192.168.10.35 www netmask 255.255.255.255

static (dmz-office,inside) 172.16.3.14 192.168.10.35 netmask 255.255.255.255

static (inside,dmz-office) 172.16.3.0 172.16.3.0 netmask 255.255.255.0

access-group outside_access_in in interface outside

2 Replies 2

Hi,

Give the following command for natting the ip 192.168.10.35(outside) to 172.16.3.15(dmz)

static(dmz,outside) 192.168.10.35 172.16.3.15 netmask 255.255.255.255

Does the nat routing between the VLAN's have to be up and running correctly before I use the packet tracer in the ADSM to see what packets are accepted and/or droped?

It seems like everything gets drop but the default rule

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