Solved

Firewall allow all policies per zone - what is secure?

Posted on 2012-03-11
1
356 Views
Last Modified: 2012-03-13
Can somebody tell me which of these is secure and which are not.  I mean....probably none of them are secure, but just give me an idea of which are reasonably safe because of the relationships between the zone.  

If I were to ALLOW ALL SERVICES, ANY SOURCE TO ANY DESTINATION on these, which are reasonably ok?  If any are big security concerns, why?

lan to wan
lan to vpn
vpn to lan
vpn to vpn
vpn to wan

thanks for your help!
0
Comment
Question by:readymade
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 78

Accepted Solution

by:
arnold earned 500 total points
ID: 37708548
Lan to wan allows all systems in the LAN access to the outside. normally this is fine, but if one of the systems is compromised with a virus that establishes a connection to a remote site through which commands can be sent means your entire LAN is now open.

VPN to LAN means that the security of the remote system is the weakest point and which you can not control unless you control the system.

LAN to VPN allows for systems on the LAN to access remote resources connected via VPN including responses to requests originated from VPN connected systems.

Similarly for VPN to VPN.

VPN to WAN you allow your connection to be used by VPN connected devices to access the outside.

This is required if your VPN policy is to secure all networks rather than split tunnel where only LAN traffic is sent through the VPN.

Limiting each zone  to the bare essentials will limit the attack vector from that location.

Security is based on the weakest link/system. VPN to LAN exposes systems you control to an external system that you do not.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
is this a virus? 3 107
Cisco ASA 5505's for VPN study 15 88
port redirection on cisco asa 5520 5 35
Factory Reset of Juniper SSG20 2 56
SHARE your personal details only on a NEED to basis. Take CHARGE and SECURE your IDENTITY. How do I then PROTECT myself and stay in charge of my own Personal details (and) - MY own WAY...
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question