IP addresses
Telnet traffic
Upper-layer IP protocols
How the packets that meet the test conditions will be handled by the Cisco IOS software
Extended
Access-lists are used for limiting the traffic say mainly for security purpose. Using access-list you can deny or permit the traffic from source address based on standard access list or deny or permit the traffic by classification of source or destination ip address, or by protocols . these are written in sequential order. So order of statement is very important . We should be clear of what to permit or deny .. sample config Standard access-list Router(config)#access-list 5 <permit> or <deny> <source ip address> Extended access-list Router(config)#access-list 111 <permit> or <deny> <protocol> <source ip address> <destination ip address> After creating access-list it will not be useful without applying on the interface where the traffic runs along the path. these should be applied in inbound direction or outbound direction of the interface as per our requirement. Most importantly when u want make changes , copy to text editor or notepad , do changes on them and remove the access-list config in the router and copy them fresh from the notepad.
The implicit deny concept refers to the default action taken by a firewall or access control system when there is no explicit rule to permit or deny traffic. In this case, all traffic is denied unless specifically allowed by a rule. This helps enhance security by preventing unauthorized access by default.
Permit, allow
You can deny the access to the desktop by using the control panel.
The opposite of "permit" is "prohibit" or "forbid," meaning to not allow or to disallow something.
AnswerIf use of access deny option. Without your permission no one can Access you computer and also not install any program without your permission.
The deny access module in Drupal does many varieties of different things. These things include, but are not limited to, allowing overriding access granted by other node access modules.
Condemn, demur, denounce, denounce, deny, protest, refuse, and prohibit.
Get a large dog.
Since Facebook uses a limited range of IP addresses, blocking those addresses on the router will effectively deny access to Facebook.