02-15-2022, 08:26 PM
Types of www
Packet Filters www
Stateful Inspection wwws
Application Layer wwws
Packet filtering www
Packet filters act by examining packet headers that are transferred between computers on the Internet. When a packet passes through the www, if the header information matches the "www packet filter", which is predefined on the www, the packet is either discarded or rejected, resulting in error messages to the source. sent.
This type of packet filtering does not care if the packet is part of the current network stream.
The packet filtering www works in the first 3 layers of the OS Imodel. Filtering can be performed based on all the information in the packet header.
Stateful audit www
It tracks data from its source to its destination. The application layer www controls only the header parts of the incoming and outgoing data and provides security by restricting the protocols in the application layer. For example, blocking access to a Web site over the HTTP protocol can be given as an example. The more advanced ones are stateful ones, which mostly control the traffic of large networks in the internet and internal network.
Application layer www
It works at the application layer level in the OSI model. It is the most commonly used www technique. The www at the application layer can open, control and filter all packet headers up to the data part of the incoming packet.
The most important advantage of filtering at the application layer is that some applications and protocols are understandable (such as FTP, DNS, HTTP).
Today's wwws are not only used to close ports. Next-generation wwws are also U.T.M. (Unified Threat Management) (with features such as www, antivirus, antispam, IDS/IPS, VPN, router) are integrated devices. Although the www brands known for a period of time, U.T.M. Although it claims that its devices are bulky and unsuccessful, all www manufacturers today are U.T.M. manufactures devices.
Known U.T.M. device brands are Cisco ASA, Fortinet, Labris, Juniper, NetSafe-Unity, Netscreen and Symantec series. It may restrict port protocol on these devices. It can do web filtering (ban by categories such as terrorism, violence, weapons). It can stop processes such as downloading files. A well-established www can turn the computer into a typewriter.
Packet Filters www
Stateful Inspection wwws
Application Layer wwws
Packet filtering www
Packet filters act by examining packet headers that are transferred between computers on the Internet. When a packet passes through the www, if the header information matches the "www packet filter", which is predefined on the www, the packet is either discarded or rejected, resulting in error messages to the source. sent.
This type of packet filtering does not care if the packet is part of the current network stream.
The packet filtering www works in the first 3 layers of the OS Imodel. Filtering can be performed based on all the information in the packet header.
Stateful audit www
It tracks data from its source to its destination. The application layer www controls only the header parts of the incoming and outgoing data and provides security by restricting the protocols in the application layer. For example, blocking access to a Web site over the HTTP protocol can be given as an example. The more advanced ones are stateful ones, which mostly control the traffic of large networks in the internet and internal network.
Application layer www
It works at the application layer level in the OSI model. It is the most commonly used www technique. The www at the application layer can open, control and filter all packet headers up to the data part of the incoming packet.
The most important advantage of filtering at the application layer is that some applications and protocols are understandable (such as FTP, DNS, HTTP).
Today's wwws are not only used to close ports. Next-generation wwws are also U.T.M. (Unified Threat Management) (with features such as www, antivirus, antispam, IDS/IPS, VPN, router) are integrated devices. Although the www brands known for a period of time, U.T.M. Although it claims that its devices are bulky and unsuccessful, all www manufacturers today are U.T.M. manufactures devices.
Known U.T.M. device brands are Cisco ASA, Fortinet, Labris, Juniper, NetSafe-Unity, Netscreen and Symantec series. It may restrict port protocol on these devices. It can do web filtering (ban by categories such as terrorism, violence, weapons). It can stop processes such as downloading files. A well-established www can turn the computer into a typewriter.