A stateless firewall does not keep information about existing connections, TCP sequence numbers, and other information. It analyzes packets independently, not as part of the packet sequence.
A network hub absconds with any stateful packet inspection (SPI), so it won't act as a firewall.
Difference between Checkpoint and Juniper Firewalls: Juniper follows two-tier architecture whereas Checkpoint follows three-tier architecture. Juniper uses the concept of Deep inspection process where as the checkpoint uses the stateful inspection process. Juniper uses the concept of Zones whereas Checkpoint do not use.
Stateful firewall checks more than just the ACK flag;it inspects the sequence numbers to ensure the correct state of the TCP session.
SMTP is push protocol, stateful protocol which is used for sending Mails from Client to Client or Server to Server. Generally SMTP uses the encryption method of 7bit or 8bit ISCII but HTTP dose not use that. HTTP is pull protocol which is preferred for sites demand and this is stateless protocol.
Firewall define by its name only firewall means the wall of fire. firewall act as a security gateway between two network(usually between trusted and untrusted network) . Basically firewalls depends on the manufacturer. Ike so many are their for example CISCO,JUNIPHER,CHECKPOINT and etc but in the current senario checkpoint firewalls are mostly in use because they are not so costly and also realiable. firewall also have three generations first is packet filter, second is application proxy and third and last is stateful inspection. these are the generation according to checkpoint and stateful inspection firewall invented by checkpoint byself. ( VIKRAM SINGH )
hi
Packet Filtering:permits or denies traffic based onsource/destination IP addresses, or TCP/UDP port numbers usingAccess Control Lists (ACLs)Stateful Packet Inspection:Tracks TCP and UDP sessions in a flowtable, using the Adaptive Security Algorithm.
The difference between personel firewall and business firewall is that 1. personel firewall are using personel level such as laptop,desktop whereas business firewall we are using in a corporate world. 2. In personel firewall, we are not using appropriate antivirus that can prtect my lease line and In business firewall we are using antivirus that protects our lease line and ensuring us that data has been encrypted according to our Operating system.
A firewall filters traffic to and from a computer. Encryption makes the traffic unreadable to anyone who does not know how to decrypt the encrypted traffic.
firewall is very basic protection.windows defender is a nice anti-spyware product, not the best but a nice one
Firewall appliances are stand-alone, self contained combinations of computing hardware and software. A commercial grade firewall system consists of application software that is configured for the firewall application and run on a general-purpose computer.
UTM is a complete package which contains, firewall, VPN, IPS,etc etc. A firewall on the other hand is a dedicated firewall which prevents intrusions. A dedicated firewall will be more effective than a UTM for preventing intrusions. UTM since its a package and has to handle various other functionalities wont be as effective as a dedicated firewall.