Solutions

ProxySG is still doing IPv6 DNS query even after restricting to IPv4 only

Solutions ID:    KB4236
Version:    1.0
Status:    Published
Published date:    01/02/2011
 

Problem Description

The ProxySG still performs IPv6 DNS query and negates the IPv4 policy similar to the following:

<Forward>
    server_url.dns_lookup (ipv4-only)

<Proxy>
    server_url.dns_lookup (ipv4-only)

 

Resolution

  1. In the Visual Policy Manager (VPM), navigate to Configuration > Set DNS Lookup Restrictions.
  2. Check "All" for DNS lookup restrictions and install the policy.
    This will disable the proxy from performing DNS forward lookups for policy evaluation purposes.
  3. If you want to restrict only a particular URL or domain, check "Listed host patterns".
  4. Click "Add" to add the URL or domain name.

 


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