A rule without a protocol means all protocols, a rule with a protocol trumps a rule without if its the only difference.A rule with one ip trumps a rule with an ip range that is besides that on the same level A rule with ip and port trums a rule with ip or port onlyĢb. A rule with a Port or IP trumps a rule withoutĢa.A rule for a specified program trumps a rule for all programs except a given one, trumps rules for all programs.The rules are applied based on a specific decision priority: That said users who run a 3rd party firewall which they may prefer may not want to many firewalls being active at once, while still wanting to use some per sandbox network rules for compatibility and not security reasons.Īlso please note that with this build the old "BlockPort=." functionality is completely dropped, the default port block rules are now implemented by the new user mode firewall component, if you have custom BlockPort entries in your sandboxie ini they will need to be updated by hand to the new format, for example "BlockPort=137,138,139,445" -> "NetworkAccess=Block Port=137,138,139,445" they are triggered for any process on the system whether its sandboxed or not, in the lather case they don't do anything and the use of a hash map to identify sandboxed programs that require action should provide optimal performance. The rational behind implementing this functionality in user and kernel mode (driver) instead of driver only is twofold for once it allows for debugging of the rule processing code as booth modes use the same code to make decisions based on the preset rules. ![]() If the WFP support is not enabled the same rules still can be set and are used, but will be applied only by a set of user mode hooks, unlike the WFP implementation they will apply only to outgoing connections and there are no enforcement guarantees as user mode hooks can be bypassed or disabled by a malicious application. Once this is done the firewall rules which can be configured in the network options of each sandbox, will be enforced by the driver. ![]() This functionality needs to be enabled in the global Sandboxie settings, and the driver needs to be reloaded (or the PC rebooted) for the feature to be activated. This build adds the new functionality to use Windows Filtering Platform (WFP) to implement a per sandbox firewall.
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