With the increasing number of cybercrimes with every passing day, individuals and companies must secure their information. However, there are many challenges to implementing the same. A firewall is one such security device that can help you safeguard your network and device from an outsider. In this tutorial on ‘what is a firewall’, you will learn all you need to know about a firewall and how it acts as a shield to protect your network.
ba afzayeshe har rooze jarayem cyberi ,company ha va afrad bayad etelaate khodra mohafezat konand. agarche chalesh zidi ast ke bekhad anjam shavad . firewall device amniati ke komak mikonad ye mohafez motmaen baraye shabake va device hast .
Firewall is a network security device that observes and filters incoming and outgoing network traffic, adhering to the security policies defined by an organization. Essentially, it acts as a protective wall between a private internal network and the public Internet.
Fencing your property protects your house and keeps trespassers at bay; similarly, firewalls are used to secure a computer network. Firewalls are network security systems that prevent unauthorized access to a network. It can be a hardware or software unit that filters the incoming and outgoing traffic within a private network, according to a set of rules to spot and prevent cyberattacks.
firewall chist? firewall ye device amniati network ast ke traffic voroodi va khoorooji shabake ra moshahede mikonad, va bar asase policy sazman filter mikonad.asasan mesle ye divare mohafezti beine shabake dakheli va internet ast.
firewall ha syesteme amniati shabake hastand ke az dastresi bedoone hagh dastresi jelogiri mikonad. ke am mitavanad sakht afzaer bashad va ham narm afzar va ham sakht afzar bashad.
A firewall can either be software or hardware. Software firewalls are programs installed on each computer, and they regulate network traffic through applications and port numbers. Meanwhile, hardware firewalls are the equipment established between the gateway and your network. Additionally, you call a firewall delivered by a cloud solution as a cloud firewall.
There are multiple types of firewalls based on their traffic filtering methods, structure, and functionality. A few of the types of firewalls are:
narmafzar firewall ha roo computer install mishavad va trafic shabake ra az tarighe barname ha va port ha tanzim mikonad. dar hamin hein sakhtafzare firewall ha tajhizati hastand ke beine gateway va shabke gharar migirad. alave bar inha ma mitoonim az cloud firewall ham estefade konim ke be jaye shabake dar mohite cloud mizbani mishavad.ma chandin no firewall bar asase ravesh haye filter kardan karayi va sakhtar darim.
A packet filtering firewall controls data flow to and from a network. It allows or blocks the data transfer based on the packet's source address, the destination address of the packet, the application protocols to transfer the data, and so on.
packet filtering jaryane etelaat ra az dakhel o khareje shabake control mikonad. va ye jaryano block mikone va ya ejaze oboor mide bar asae addres mabda packet va ya destination addresesh ya be vasile protocoli ke baraye ferestadan data estefade mishavd.
This type of firewall protects the network by filtering messages at the application layer. For a specific application, a proxy firewall serves as the gateway from one network to another.