Source Port Range | Determine the port range for the source. |
Action | Accept – the packets that match with such rule will be |
| accepted. |
| Drop – the packets that match with such rule will be |
| blocked. |
Comment | Enter filter set comments/description. Maximum length is |
| |
OK | Click this button to save such profile. |
Cancel | Click this button to cancel current operation. |
4.4.3 System Security
Stateful Packet Inspection (SPI) is a firewall architecture that works at the network layer. Unlike legacy static packet filtering, which examines a packet based on the information in its header, stateful inspection builds up a state machine to track each connection traversing all interfaces of the firewall and makes sure they are valid. The stateful firewall of Vigor router not just examine the header information also monitor the state of the connection.
The purpose of this is to enable the SPI firewall for the filtering incoming packets and outgoing packets. Simply check the box and click OK.
4.4.4 Content Filtering
Web Content Filter
We all know that the content on the Internet just like other types of media may be inappropriate sometimes. As a responsible parent or employer, you should protect those in your trust against the hazards. With Web filtering service of the Vigor router, you can protect your business from common primary threats, such as productivity, legal liability, network and security threats. For parents, you can protect your children from viewing adult websites or chat rooms.
Once you have activated your Web Filtering service in Vigor router and chosen the categories of website you wish to restrict, each URL address requested (e.g.www.bbc.co.uk) will be checked against our server database. This database is updated as frequent as daily by a global team of Internet researchers. The server will look up the URL and return a category to your router. Your Vigor router will then decide whether to allow access to this site according to the categories you have selected. Please note that this action will not introduce any delay in your Web surfing because each of multiple load balanced database servers can handle millions of requests for categorization.
URL Content Filter
To provide an appropriate cyberspace to users, Vigor router equips with URL Content Filter not only to limit illegal traffic from/to the inappropriate web sites but also prohibit other web feature where malicious code may conceal.
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