A stateful server loses all its volatile state in a crash. * Restore state using a recovery protocol based on a dialog with clients, or abort operations that were underway when the crash occurred. * Server needs to be aware of client failures in order to reclaim space allocated to record the state of crashed client processes (orphan detection and elimination).
Imagine a Web server that maintains a table in which client IP addresses are mapped to the most recently accessed Web pages. When a client connects to the server, the server looks up the client in its table, and if found, returns the registered page. Is this server stateful or stateless?
Stateful inspection works at Network Layer . Many Thanks, Chinmoy Roy
stateful packet filtering
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.
Stateful firewalls use session-based rules to control traffic. The disadvantage of a stateful firewall is that it can be vulnerable to Denial of Service (DoS) attacks if a lot of new connections are opened very fast.
cisco
with the keyword int: eg: declare @myIntegerVariable int
Stateful Inspection. A stateful inspection firewall uses a technique known as stateful packet filtering to keep track of communication channels. This is different when compared to basic firewalls. Once the packet and connection has been sent, a normal firewall will not remember the communication channel, whereas the stateful inspection firewall will. This also proves useful to protect connectionless communication protocols.
The method you are referring to is called SPI - Stateful Packet Inspection. A firewall employing SPI is commonly called a stateful firewall.
iptables is the current host-based, Linux IP stateful firewall and routing service that can be enabled in your Fedora Linux Server. It controls incoming and outgoing network connections and either allows, disallows, or forwards requests based on a set of defined rule sets you configure within the firewall application itself.
Stateful packet inspection
ATM Controller is the server machine that handles ATM and POS(Point of Sale) transactions.