Mailer: SecurityFocus In-Reply-To: <000001c16693$de35fbb0$5241bbd4@www> Hi, As a technical support engineer for ZoneLabs I just wanted to let all of you know that this report is missing something important. ZoneAlarm has two zones, the internet and the local zone. Any networks which are checked in the local zone are considered trusted, and all network traffic from those addresses will be allowed through the firewall. As an end-user it is EXTREMELY important you only add addresses to your local zone that you trust. This would be your LAN addresses and no others generally. ZoneAlarm Pro asks you if you would like to trust the network you connect to whenever you get DHCP from a new DHCP server. If you are connected to the internet answer NO to this question when it comes up. If you follow these guidelines you will not be open as described below. Best regards, Zone Labs Support > >ZoneAlarm Pro is firewall for Windows home-users. > >The following was tested with ZoneAlarm Pro latest version: 2.6.357 > >I`m not sure if it also works with the free version but I can't imagine >why it wouldn't. > >Similair to Internet Explorer ZoneAlarm Pro (ZAP) has security settings >for Local and Internet. > >However ZAP in certain cases classifies connections as Local when they >really aren't Local. All connections that have the same 2 octets as your >IP (ex. Your ip 123.123.123.123 -> 123.123.*.*) are also considered >Local. > >This means everyone on with the same two first octet's of your IP can >connect to your computer under local level security settings instead of >the internet level security settings. > >With default settings this will expose your computer and all it's ports >plus opening and allow access to windows services and shares. Users to >customize local level security to allow (and block) whatever they want. > >How did I discover this? > >I installed a webserver and asked some friends to view some pages but >they weren't able to connect. Zone Alarm Pro blocked the http port I >found out. But this surprised me since I viewed my http.acces and >http.error logife before I enabeled port 80 in ZAP and already had a lot >of requests from servers infected with nimba. After looking at the IP's >the first two octets were all the same.. the same as mine. > >Philip Wagenaar >The Netherlands >philip@netlogics.nl > > > >
