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Assessment Title
Rule Text
The Juniper SRX Services Gateway Firewall must deny network communications traffic by default and allow network communications traffic by exception (i.e., deny all, permit by exception).
Description
Discussion Text
A deny-all, permit-by-exception network communications traffic policy ensures that only those connections which are essential and approved are allowed.
As a managed interface, the ALG must block all inbound and outbound network communications traffic to the application being managed and controlled unless a policy filter is installed to explicitly allow the traffic. The allow policy filters must comply with the site's security policy. A deny all, permit by exception network communications traffic policy ensures that only those connections which are essential and approved, are allowed.
By default, Junos denies all traffic through an SRX Series device using an implicit default security policy exists that denies all packets. Organizations must configure security policies that permits or redirects traffic in compliance with DoD policies and best practices. Sites must not change the factory-default security policies.
As a managed interface, the ALG must block all inbound and outbound network communications traffic to the application being managed and controlled unless a policy filter is installed to explicitly allow the traffic. The allow policy filters must comply with the site's security policy. A deny all, permit by exception network communications traffic policy ensures that only those connections which are essential and approved, are allowed.
By default, Junos denies all traffic through an SRX Series device using an implicit default security policy exists that denies all packets. Organizations must configure security policies that permits or redirects traffic in compliance with DoD policies and best practices. Sites must not change the factory-default security policies.
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