Not sure if this is related to the issue related to HTML5 VPN Portal (forcing the firewall to block traffic) but I've tried to enabled it and I got (along with the laready known bug) a lot of middleware errors
2012:03:21-18:48:21 ***** middleware[3495]: >=========================================================================
2012:03:21-18:48:21 ***** middleware[3495]: E Argument "" isn't numeric in numeric eq (==) at /modules/IPTables/Adapters/clientless_vpn.pm line 64.
2012:03:21-18:48:21 ***** middleware[3495]:
2012:03:21-18:48:21 ***** middleware[3495]: 1. main::_warn:179() mdw.pl
2012:03:21-18:48:21 ***** middleware[3495]: 2. modules::IPTables::Adapters::clientless_vpn::generateRules:64() /modules/IPTables/Adapters/clientless_vpn.pm
2012:03:21-18:48:21 ***** middleware[3495]: 3. modules::IPTables::Adapter::load:60() /modules/IPTables/Adapter.pm
2012:03:21-18:48:21 ***** middleware[3495]: 4. core::Config::load:277() /core/Config.pm
2012:03:21-18:48:21 ***** middleware[3495]: 5. main::top-level:221() mdw.pl
2012:03:21-18:48:21 ***** middleware[3495]: |=========================================================================
2012:03:21-18:48:21 ***** middleware[3495]: E Argument "" isn't numeric in numeric eq (==) at /modules/IPTables/Adapters/clientless_vpn.pm line 64.
2012:03:21-18:48:21 ***** middleware[3495]:
2012:03:21-18:48:21 ***** middleware[3495]: 1. main::_warn:179() mdw.pl
2012:03:21-18:48:21 ***** middleware[3495]: 2. modules::IPTables::Adapters::clientless_vpn::generateRules:64() /modules/IPTables/Adapters/clientless_vpn.pm
2012:03:21-18:48:21 ***** middleware[3495]: 3. modules::IPTables::Adapter::load:60() /modules/IPTables/Adapter.pm
2012:03:21-18:48:21 ***** middleware[3495]: 4. core::Config::load:277() /core/Config.pm
2012:03:21-18:48:21 ***** middleware[3495]: 5. main::top-level:221() mdw.pl
2012:03:21-18:48:21 ***** middleware[3495]: |=========================================================================
2012:03:21-18:48:21 ***** middleware[3495]: E Argument "" isn't numeric in numeric eq (==) at /modules/IPTables/Adapters/clientless_vpn.pm line 64.
2012:03:21-18:48:21 ***** middleware[3495]:
2012:03:21-18:48:21 ***** middleware[3495]: 1. main::_warn:179() mdw.pl
2012:03:21-18:48:21 ***** middleware[3495]: 2. modules::IPTables::Adapters::clientless_vpn::generateRules:64() /modules/IPTables/Adapters/clientless_vpn.pm
Thanks