cisco network firewall

ZoneAlarm Professional Network firewall, the use is very simple, you just fill in the installation of your information, installed after the reboot, ZoneAlarm will automatically start to help you carry out the task. You are free to set whether all programs are allowed to connect to the Internet, The use of this method to prevent some of the unknown software secretly online. The best way to do this is to lock

In the previous 9 articles to share with you the construction of the 2008 DC and the core mode of some applications, when we have to deploy infrastructure services for the enterprise to be safe to start Windows Server 2008 with Windows Firewall, and many enterprises will also Deploy some security-resolution products (such as ISA) separately. So, to do a good job of the deployment of these products, we need to understand the Active Directory services a

I. Background description 1. Network environment configuration for Central site Shanghai and branch site Nanjing 2. The center site has three areas: Extranet area, intranet area, DMZ area 3.DMZ Zone has enterprise internal server (DNS, WEB, Email, FTP) and remote administration via SSH and HTTPS encryption 4. Central site DMZ address pool: 172.18.100.0/24 Central site inside address pool: 172.18.101.0/24 Ii.

chain cannot be deletedEach rule has a built-in counterThe number of packets to be matchedThe sum of the size of the packets being matched toRules: Matching criteria, handling actionsiptables [-t TABLES] COMMAND CHAIN [num] matching standard-j processing methodMatching Criteria:Generic match:-S,--src specify the original address-D,--dst specify Destination address-P, {TCP|UDP|ICMP}: Specify protocol-I, INTERFACE: Specifies the interface to which the data packet flowsChains available for definit