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You looking at x1?<br />
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I am staring at my nsa2400 and have no clue what you mean by it is greyed out.<br />
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What is the ip assignment dropdown set as?
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You looking at x1?

I am staring at my nsa2400 and have no clue what you mean by it is greyed out.

What is the ip assignment dropdown set as?

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I have two sonicwalls exactly the same at different locations. &nbsp;Both are Sonicwall 2400. &nbsp;One of them has a WAN interface that is not greyed out (ie. hard default interface) and the other is greyed out like it's supposed to. &nbsp;Quick background is I didn't configure these so I'm coming in halfway to troubleshoot. &nbsp;The one that that is not greyed out doesn't have an option to add dns or default gw when I edit it. &nbsp;It acts like a custom interface. &nbsp;There are no other WAN interfaces either. &nbsp;They have the same firmware versions as well. &nbsp;What happened to the default WAN interface?
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I have two sonicwalls exactly the same at different locations.  Both are Sonicwall 2400.  One of them has a WAN interface that is not greyed out (ie. hard default interface) and the other is greyed out like it's supposed to.  Quick background is I didn't configure these so I'm coming in halfway to troubleshoot.  The one that that is not greyed out doesn't have an option to add dns or default gw when I edit it.  It acts like a custom interface.  There are no other WAN interfaces either.  They have the same firmware versions as well.  What happened to the default WAN interface?

sonicwall 2400 not seeing the default gateway option when editing the WAN interface.

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.