| Majority of the time, the traffic that flows in and out of | | | | Protocol (TCP) port in use; it is basically part of the |
| networks is accompanied with security threats. To do | | | | solution for internet security. |
| away with these developing threats, all network | | | | These Lists work by guarding what enters and leaves |
| administrators require techniques for denying unwanted | | | | a network. As a guard, the List only allows what |
| access to networks and only allow access to | | | | appears on the list to be accessed. It basically filters |
| authorized and trusted users. There is a wide range of | | | | what can be accessed basing on the condition that |
| security tools ranging from physicals devices to | | | | the name is on the authorized list. This is how this form |
| passwords that facilitate internet access control. This | | | | of internet access control works; when a packet |
| have been helpful in the past but with network | | | | reaches the router, some information is extracted from |
| attackers devising new ways of bypassing the old | | | | the header of the packet by the router. After this, |
| techniques, there is a need for advanced internet | | | | basing on the filtering rules, the router decides if the |
| control tools. These tools enable network | | | | packet is passable or if it should be dropped. The |
| administrators to define the users that can access a | | | | packet filtering process normally takes place in the |
| network or entire LAN resources. Access Control | | | | Internet Layer of the TCP/IP or Network layer of the |
| Lists (ACL) presents a list of protocols and conditions | | | | OSI (Open System Interconnection) model. |
| that are used in checking the network traffic travelling | | | | In summary, the ACL extracts particular information |
| over the interface of a router. Internet access control | | | | from packet headers after which they test the info |
| is vital for all network users so as to do away with | | | | against their rules. It is after this that the 'deny' or |
| unauthorized access of particular sites. | | | | 'access' decision is made basing on the type of ICMP |
| Business owners can protect their businesses by use | | | | messages, the source and destination IP address and |
| of ACLs that aid in telling a router the kind of packets | | | | the TCP/UDP destination and source port. Internet |
| to deny or accept but this is normally based on | | | | access control is of essence for any business as it |
| particular conditions. For instance, Cisco routers are | | | | aids in controlling the users that can access a network. |
| capable of filtering traffic and can even block traffic | | | | It also aids in controlling operating system resources. |
| from another network or the internet. ACL offers a | | | | Internet access control entails the control of |
| great way of controlling the traffic that comes in and | | | | downloaded material to ensure adware and spyware |
| out of a network offering you an excellent internet | | | | applications are avoided since only permitted users will |
| access control tool. You can also configure the ACLs | | | | access the computer and will only access what is |
| for the entire network protocols that have been | | | | permitted. The internet access control concept |
| routed. There are various types of ACLs such as the | | | | generally enables business owners to keep track of |
| complex, extended and standard lists and they are all | | | | what takes place on organizational networks and |
| utilized as protocols for controlling the traffic on a | | | | control the entire network operations. |
| network. The control is based on the Transfer Control | | | | |