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[ScreenOS] Multi-Cell policy installs only the top address elements if Application IGNORE is selected, even though policy install fails



Article ID: KB20844 KB Last Updated: 20 Apr 2011Version: 1.0
Multi-Cell policy installs only the top address elements if Application IGNORE is selected, even though policy install fails.
  • While creating policy with multi-cell entries (More than one source and destination is the to and from field) with application setting as IGNORE and service as ANY. The following errors are seen:
  • policy has service any with port any.
    policy cant be modified .
  • After which if “OK” or “CANCEL” is clicked the policy is still created but with just the top most address entry defined in the multi-cell policy.
The issue seen is by design due to the following reasons:
  1. If service ANY is used by a policy, you must not set a specific application for it, including application IGNORE.

  2. Once "OK" is clicked for policy installation the complete policy configuration would not have been finished due to ‘set application failure’. However the partial policy configuration has been set and taken effect, the page has shown the current policy setting. To click Cancel or OK does not remove the policy and it just means to discard further policy modification done on the web page.

  3. Note:
    Application IGNORE option is used specifically for avoiding ALG being triggered, if global ALG option is enabled for the respective services.
    As ALG's are specific to only certain services the ANY service on the policy would not be applicable even for the IGNORE option. As the ANY service is used to allow all types of traffic even those which do not have any ALG's defined.

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