Inbound connection:- Traffic from a lower to higher security level is permitted by Outbound connection :- Traffic from a higher to a lower security level is permitted byДefault, unless you have restricted traffic with ACL.

You could enter clear configure access-list Acl-ID, specefying exact ACL, you wish to delete.

This would delete every ACL on your appliences. If you want to remove or undo a configuration from your appliences, use the clearД®x:- cisocasa # clear configure access-list ciscoasa # clear interface physical-if-nameДў. Write memory (WR) :- Saves your active configuration file in RAM to Flash.ДЎ. To view the configuration running in RAM, use the show running-config command.Д¬iscoasa # show commandД®x:- ciscoasa # show running-config interface п‚· Flash :- Commonly called the Startup-config п‚· RAM :- Commonly called the running-config On the appliences, you have two locations for a configuration file

The Security appliences use the flash memory to store the OS, the ASDM images, and the appliences configuration files.You can also start the script manually by entering configuration mode and executing the setup command.ACLs are the most common method of allowing traffic to travel from a lower to higher interfaces.ДЄSA support RIP, EIGRP and OSPF routing protocols.Once the user terminates the connection, the entry will be removed from the appliences. The security algorithum adds a connection in the Conn table so that the returning traffic from the external web-server will be permitted back to the user.The Security algorithum is responsiable for implementing and enforcing your security policies.CTP authenticates the connection at the application layer, but process the subsequent data stream at layer 3 & 4.When the security algorithum is configured for CTP, it first authenticates connections before permitting through the firewall.The Security appliances will place the old sequence number as well as new sequence number in the connection table.SNR is used to protect you against reconnaissences andTCP session hijacking attacks by Crackers. The Security appliences include a security feature called Sequence number called Sequence number randomization (SNR), which is implemented by the security algorithum.

A Sequence number in a TCP segment indicates the number of bytes sent.

Cisco IOS routers, however, do support two features that implement Stateful firewall functions like the Security appliences :- Context-based access control (CBAC) and its replacement, Zero-based firewall (ZBF).

If a connection entry is idle for a period, the entry will timeout, and the stateful firewall will remove the connection entry.

The security appliences use the conn table to enforce the security policies for user connection.

The Security appliences provides a Stateful process for TCP and UDP traffic only, by default in version 7, ICMP can also be treated statfully, but this is disabled by default.

Maintaining connection information in a State table, refereed to as aConnection table.

Clearing xlate on cisco asdm 5.2