How to prevent Internet access from modified IP addresses on an AR router

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Users can configure the IPSG function to enable the AR router to match IP addresses in received packets with a list to prevent network attacks that are initiated based on source IP address spoofing. For details about the function and its configuration procedure, choose Configuration Guide (via Command Line)> Security> IPSG Configuration through the URL: Product documentation.

Other related questions:
How do I check IP addresses for Internet access on the AR router
1. Run the display nat outbound command to check the outbound NAT configuration and determine the ACL referenced by outbound NAT. 2. Run the display acl { | name | all } command to check the source address in the ACL. The source address is the address segment for Internet access.

How to control some PCs from accessing the Internet on an AR router
Configure an ACL on a router to match source or destination IP addresses. Add denied IP addresses and then permitted IP addresses.

Prohibiting intranet users from accessing the Internet on the USG series
Configure a security policy whose security zone originates from the intranet or IP matching conditions to prohibit intranet users from accessing the Internet.

How to control Internet access on an AR router
The AR router provides the URL filter function, which enables the AR router to control URLs and forbid/allow users to access specific web page resources so as to regulate Internet access behavior. For details about the configuration procedure, choose Configuration Guide (via Command Line)> Security> Deep Security Defense Configuration> URL Filtering Configuration through the URL: Product documentation.

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