snoopy9438
czołg
Dołączył: 14 Lut 2011
Posty: 2614
Przeczytał: 0 tematów
Ostrzeżeń: 0/10
Skąd: England
|
 Wysłany: Pon 7:33, 21 Mar 2011 Temat postu: discount globe shoes|Should You Use An LLCkim |
|
|
atch the established rule set. The firewall administrator may define the rules; or default rules may apply. The term packet filter originated in the context of BSD operating systems.Application-layer FirewallApplication-layer firewalls work on the application level of the TCP/IP stack i.e. [link widoczny dla zalogowanych], all browser traffic [link widoczny dla zalogowanych], or all telnet or ftp traffic and may intercept all packets traveling to or from an application. They block other packets usually dropping them without acknowledgement to the sender. In principle, application firewalls can prevent all unwanted outside traffic from reaching protected machines.ProxiesFirewallA proxy device may act as a firewall by responding to input packets, (connection requests, for example) in the manner of an application [link widoczny dla zalogowanych], whilst blocking other packets. Proxies make tampering with an internal system from the external network more difficult and misuse of one internal system would not necessarily cause a security breach exploitable from outside the firewall.Network address translationFirewalls often have network address translation (NAT) functionality, and the hosts protected behind a firewall commonly have addresses in the "private address range", as defined in RFC 1918. Firewalls often have such functionality to yilai：
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
Post został pochwalony 0 razy
|
|
