Question

Cisco ASA 5505 - How to secure device?

Asked by: danbrown1888

I have two Cisco ASA 5505's connected using a VPN. The only other use of the device is to connect to websites if I need to download a file . The firewalls and connection is dedication for offsite backup. I would like to know how to secure the device using either the CLI or ASDM. I tried various documents from Cisco and even tried their 1230 page manual linked below, but it is a little over my head. I need some good step by step documents with PICTURES.

http://www.ciscosystems.co.nz/en/US/docs/security/asdm/6_1/user/guide/asdmug.pdf

I'd like to try this myself. Who can point me into the right direction to do the following:

1) Change passwords ( I can't change the enable password. The enable secret password was changed successfully.)
2) Disable remote management access
3) Disable access via unsecure telnet and force ssh
4) How to configure the firewall to only allow outgoing http and incoming/outgoing traffic on the VPN
5) And other basic settings.

This is very simple stuff and i'm just expecting some good resources to be given. My terminology is very wrong so it has been difficult for me.

Thanks for your time.

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Asked On
2009-10-26 at 14:02:34ID24845213
Tags

Cisco ASA 5505

Topics

Networking Hardware Firewalls

,

Miscellaneous Security

Participating Experts
1
Points
50
Comments
4

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Answers

 

by: jfer0x01Posted on 2009-10-26 at 16:33:44ID: 25668077

Hi,

1. if you cant change enable password, you have to reset device to factory

http://ezinearticles.com/?Password-Recovery-on-the-Cisco-ASA-Security-Appliance&id=664795

use the 0x41 load ignore settings, and load a default ios configuration

2. use ASDM, but remote management is something you want to keep on.

http://www.cisco.com/en/US/docs/security/asa/asa72/getting_started/asa5505/quick/guide/remcli.html

3. you use acl's to permit traffic, by default, all cisco equipment denies traffic, you use acl's to permit certain traffic, that meet certain citeria

ex.

acl 100 deny tcp any any eq 23 ; for telnet

you would use the same

acl 100 allow tcp any any eq 22 : for ssh

see

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080100548.shtml

for ccommonly used acl's

Jfer


 

by: jfer0x01Posted on 2009-10-29 at 05:15:00ID: 25692727

Did this help?

 

by: danbrown1888Posted on 2009-10-29 at 06:26:13ID: 25693355

Jfer,

Thank you for your help. I have yet to go through the steps, but I will this afternoon. Once done this afternoon then i'll award points and post a final comment with the lessons i've learned.

 

by: danbrown1888Posted on 2009-10-29 at 14:00:01ID: 31646149

I'm new to the Cisco World, but this has helped me along my path. Thank you.

20120131-EE-VQP-002

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