Blue Coat Certified Proxysg Professional Free Sample Questions

The correct approach is to create a new, more specific Web Access Layer that is evaluated before the general, global logging layer. By placing the new layer above the existing one, its rules are processed first. A rule matching the specific financial partner APIs can then apply the detailed logging action. Since policy evaluation stops at the first match within a layer for a given action, no further rules are needed in this new layer for other traffic; the request will simply 'fall through' to the next layer (the global one) which handles the logging for all other traffic.

Kerberos is highly sensitive to time synchronization. A time skew of more than five minutes (by default) between the client (in this case, the ProxySG acting on behalf of the user) and the KDC will cause authentication to fail. The KDC error KRB5KDC_ERR_PREAUTH_REQUIRED can be misleading, but it is a common symptom of time synchronization problems, as the timestamp in the authenticator of the AS-REQ packet will be considered invalid by the KDC. Since users can authenticate when bypassing the proxy, the issue lies with the proxy's interaction with the KDC, making time skew the most probable cause.

The cache.ttl_if_fresher_than(seconds) directive provides an excellent balance for frequently updated content. It instructs the ProxySG to serve the cached object if it is fresher than the specified time (e.g., 300 seconds), but to revalidate it with the OCS if it's older. This avoids constant revalidation for very fresh content (reducing OCS load) while ensuring that content that is likely stale gets checked, thus providing users with up-to-date information without the overhead of checking every single time (always) or relying on potentially long minimum TTLs.

This statement is true. During SSL interception, the ProxySG acts as a man-in-the-middle. It establishes a secure session with the origin server, inspects its certificate, and then creates a new certificate on-the-fly. This new certificate emulates the identity of the origin server by copying key fields like the Common Name (CN) and Subject Alternative Name (SAN). This emulated certificate is then signed by the CA certificate installed on the ProxySG and presented to the client browser to establish the client-side secure session.

The correct syntax uses an action.Redirect object. It's best practice to match on url.domain rather than url.host to be less specific. The action requires the redirect code (e.g., 301 for permanent), the new URL, and optionally, a variable like $(url.query) to preserve any query strings from the original request. The other options use incorrect actions (action.Forward), incorrect syntax, or less precise matching.

This is the most direct and efficient method. A Web Content Layer is the appropriate place for content-based decisions. The rule can be precisely targeted using a Request Method object for POST requests. The action would then be to send the request to an integrated Content Analysis System (CAS) via ICAP for scanning. The CAS is designed to detect threats like SQL injection and can instruct the ProxySG to block the request if a threat is found.

HTTP workers are responsible for handling client requests, fetching objects from origin servers, and serving them. A low cache hit rate means workers are frequently going to the origin server, which is a CPU-intensive process involving DNS lookups, TCP handshakes, and data transfer. By optimizing caching policies to increase the hit rate, more objects will be served directly from the ProxySG's disk or RAM cache. This significantly reduces the workload on the HTTP workers, leading to lower CPU utilization and improved latency.

The Visual Policy Manager (VPM) only displays policies created through its interface. It is possible to have CPL code from other sources (like the Local Policy File, a Forwarding Policy File, or CPL layers added via the CLI) that is processed by the SGOS policy engine but is not represented in the VPM GUI. If a trace shows a denial but no corresponding rule is visible in any VPM layer, the most common cause is a rule in one of these non-VPM CPL sources.

This is the standard and most effective method. The SSL Interception Layer is processed specifically for SSL/TLS handshakes. By placing a 'Do Not Intercept' (bypass) rule at the top for the sensitive healthcare domains, you ensure that traffic is tunneled without decryption. The second, more general 'Intercept' rule then catches all other traffic that did not match the first rule. This top-down processing logic is fundamental to VPM policy evaluation.