A firewall is a device made to either allow or deny transmissions from other computers (particularly from the internet) to protect the computer from unauthorized access.
A firewall is necessary because, as was said, it blocks unauthorized access by hackers and disallows any files that may contain harmful data like viruses and malware.
It isn't necessary to run a firewall at all, but it is a prudent practice when connecting to the internet.
Yes ,If you do not have one Zone Alarm is recommended
PASV ("passive mode") is necessary when running a FTP client behind a firewall, as the default ("active mode") method will fail since the FTP server is unable to open a client to the client, usually because of NAT or firewall limitations.
Not usually. Your firewall has detected it is potentially unsafe and has given you fair warning. Unless the site appears on a blacklist as a false positive, an e-mail is not necessary. Check your firewall for options.
No. Viruses can even hack into your computer when it is turned off. It depends how strong your firewall and anti-virus protection units are.
No Firewall
To open a site blocked by Sonicwall, it is necessary to change the firewall settings. This can be done by logging into the firewall and clicking the "wizards" button. This will open up a configuration wizard which will give tips and guidance on how to configure the firewall. This wizard can also be used to reset the firewall to factory defaults.
There is no such thing as firewall thinking or there is not any public information on firewall thinking.
Neither. Use AVG firewall. It's even better than the other two or the Windows firewall.
Is it your PC's firewall or NORTON firewall ? You may have more than one firewall installed on your PC
packet filter firewall
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.