Do you need to have Windows Firewall on if you have a hardware firewall

If you have a hardware firewall installed like a Sophos UTM is that reason to turn off Windows firewall?  I'm curious

Thanks
Peterson50Asked:
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JohnBusiness Consultant (Owner)Commented:
A good third party software firewall will take over from Windows Firewall. I use Symantec Endpoint and its firewall takes over from Windows Firewall. So Windows Firewall may already be disabled.

If you have no third party software firewall, there is no harm in leaving Windows Firewall intact. Just leave it.
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Peterson50Author Commented:
My IT partner feels its okay to leave the workstation firewall disabled, its not necessary, is that accurate?
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JohnBusiness Consultant (Owner)Commented:
Yes it is fine, so long as you are always behind the Sophos Hardware Firewall. This is normally true for Desktop computers.

For any laptop that travels away from the hardware firewall, then some sort of software firewall should be on the computer.

I think that makes sense.
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Mal OsborneAlpha GeekCommented:
I would not disable the Windows firewall.  This give you protection form other machines on the network that may be infected with malware, or foreign machines connected to the LAN.
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MarkCommented:
Using both will be complementary to each. The hardware firewall will protect most incoming network traffic and the software firewall will be in a better  position to analyze the PC 's behaviour as it can be aware of both incoming and outgoing traffic from the PC itself i set up that way. The problem is that windows firewall doesn't do a very good job of checking outgoing traffic unless it is set up properly, not very user friendly. But using both should not be an issue. There are 3rd party software firewalls that will work better than windows firewall.
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JohnBusiness Consultant (Owner)Commented:
As I noted earlier, I use the Symantec Software Firewall and it does an excellent job on my ThinkPad.
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Yogesh PatelManager IT HW NWCommented:
Its safe to keep both firewall on as both firewall doing different job.

Hardware firewall provide you Gateway Level security and Windows firewall give you OS level security as it will protect you network from spreading .

Hardware level firewall validate Incoming and outgoing access and block it at Gateway Level so its dont go to you PC.

But in some cases unauthorized access through any Software download like Malware or any  Software Installation from media , your windows firewall prevent it from spreading to Network.


 Its like double layer security if you keep both on
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Pete LongTechnical ConsultantCommented:
My $0.02

The "Turn the Windows Firewall off because we have a hardware firewall" Is ingrained in a lot of techs, because when XP SP2 came out and enabled the firewall, carnage ensued, In Microsoft's defence thats was primarily because of badly coded applications. but the practice of disabling the windows firewall has stuck ever since.

As already mentioned if you have a third party firewall software (on the client's) then by all means, disable the Windows firewall.

However: Your most vulnerable attack vector, is from within. When "Julie" in accounts clicks an email attachment and sets up some malware that starts scanning for open ports to attack, what good is you state-full firewall then! In fact I've seen the same people who disable the Windows firewall, have "permit IP any any" outbound on their corporate firewall, so they can proliferate and infect everyone else (cheers for that!)

So leave them on! If they stop something working, get Wireshark fired up and fix that problem. Disabling a firewall without having other measures to protect your endpoints, is like having a UTM firewall thats scanning for AV/AMP so you don't bother putting AV/AMP software on you clients! You wouldn't do that, so why disable the firewall?


Pete
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