It is simple to solve using the method below. This kind of strict enforcement of IP subnet locations is central to the security functions of most firewalls. This route tells the SonicWall firewall to expect traffic only on that interface and not to allow it on others. This is because SonicOS has a directly-connected route statement for the entire subnet 67.118.188.0 / 255.255.255.0 (slash 24 network), tied to the X1 interface. If the customer has traffic going out their X2 WAN trying to reach the 67.118.188.233 server, it will fail, and SonicOS will log the attempt as an IP Spoof alert. Now, with this multiple WAN scenario, the customer sometimes needs to access a server whose IP address is in the same public range as the PPPoE (e.g., 67.118.188.233). Also, the firewall has a second WAN connected on X2, using a static IP of 49.49.49.2 w/ a gateway router of 49.49.49.1. In an example setup, the PPPoE DSL provider is connected to SonicWall firewall's X1 interface, and gives a customer a dynamic IP address 67.118.188.190 (and SonicOS uses 255.255.255.0 by default). In some cases, when the customer has multiple WAN connections, a customer may need to change this.
#Why is 255 255 255 0 default subnet windows
That is why the typical display of a PPP adapter connected in Windows will show a subnet mask of 255.255.255.255, and even the gateway IP is usually set to the same value as the acquired IP address. The PPP protocol is unusual and subnet masks are actually irrelevant to the host's IP settings. But this article shows you how you can change it if needed. In most cases, no adjustments need to be made to this subnet mask. SonicOS uses an artificial value of 255.255.255.0 by default. The SonicWall firewall has its WAN port connected to a DSL modem. Most often, customers are acquiring a dynamic, public IP address when connecting to the provider. The Point-to-Point Protocol (PPP), when used over Ethernet (PPPoE), is a common choice for DSL providers. Copy URL The link has been copied to clipboard.Content Filtering Client Control access to unwanted and unsecure web content.Capture Client Stop advanced threats and rollback the damage caused by malware.Cloud Firewall (NS v) Next-generation firewall capabilities in the cloud.Cloud App Security Visibility and security for Cloud Apps.Email Security Protect against today’s advanced email threats.Switches High-speed network switching for business connectivity.Wireless Access Points Easy to manage, fast and secure Wi-FI.Secure Mobile Access Remote, best-in-class, secure access.Cloud Edge Secure Access Deploy Zero-Trust Security in minutes.Capture Security appliance Advanced Threat Protection for modern threat landscape.Capture ATP Multi-engine advanced threat detection.Network Security Manager Modern Security Management for today’s security landscape.Security Services Comprehensive security for your network security solution.Next Generation Firewall Next-generation firewall for SMB, Enterprise, and Government.