HP X Unified Security Platform Series Instrukcja Użytkownika Pobierz pdf (Strona 82)

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Chapter 4 Firewall

66 X Family LSM User’s Guide V 2.5.1

The firewall rule table is searched from the top of the table to the end (if necessary) looking

for the first firewall rule that will match the session. Thus, it is important to put the most

specific rules (for example, those configured with user authentication, IP address groups/

ranges, or web filtering) towards the top of the table. The following diagram illustrates how

session requests are evaluated.

STEP 4

When a rule is matched, the device enforces the firewall rule based on the action and logging

configuration for the rule: Traffic is either permitted or blocked; the event is entered in the

local log, sent to a remote syslog server, or not logged at all.

STEP 5

If no matching firewall rule is found in the firewall rules list, the device denies the request

using the implicit deny rule preconfigured on the device. For details, see

“Default Firewall

Rules” on page 67.

Figure 4–1: Handling Firewall Session Requests

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HP X Unified Security Platform Series Instrukcja Użytkownika Strona 82

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