CODEWITHSUNDEEP
c#windowsfirewallcisco
Karol
Karol

Reputation: 93

C# - How to chceck if external firewall is enabled?

We want to use Cisco NAC and need to check if client Desktop has a firewall installed. This may be not the default Windows Firewall.

Is there some Windows registry key that can be checked?

Upvotes: 1

Views: 3786

Answers (2)

selbie
selbie

Reputation: 104539

For non-Windows firewalls, you can use WMI API to detect the presence of a firewall if it's registered with Windows.

Namespace = "Root\SecurityCenter2"  (might be "Root\SecurityCenter" on pre-vista)
Query = "SELECT * From FirewallProduct"

And you can use this little gem to detect if it's actually on or off.

For Windows Firewall detection, it's INetFwMgr and friends.

Upvotes: 1

pabdulin
pabdulin

Reputation: 35229

Maybe just check if you can establish connection, if you can't - display a message that user should check firewall if it's installed?

Upvotes: 4

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