what is ACLs? what is the reasons to create ACLs?
- 1 Answers
- 3933 Views
- I also Faced
- E-Mail Answers
Answer / vikram pratap singh
ACLs are lists of conditions that are applied to traffic
traveling across a router's interface. These lists tell
the router what types of packets to accept or deny.
Acceptance and denial can be based on specified conditions.
ACLs can be created for all routed network protocols, such
as Internet Protocol (IP) and Internetwork Packet Exchange
(IPX).
ACLs can be configured at the router to control access to a
network or subnet.
Some ACL decision points are source and destination
addresses, protocols, and upper-layer port numbers.
ACLs must be defined on a per-protocol, per direction, or
per port basis.
The following are some of the primary reasons to create ACLs:
Limit network traffic and increase network performance.
Provide traffic flow control.
Provide a basic level of security for network access.
Decide which types of traffic are forwarded or blocked at
the router interfaces. For example: Permit e-mail traffic to
be routed, but block all telnet traffic.
Allow an administrator to control what areas a client can
access on a network.
If ACLs are not configured on the router, all packets
passing through the router will be allowed onto all parts of
the network.
i think it's enough to understand..
| Is This Answer Correct ? | 1 Yes | 0 No |
Which of the following would not be displayed by the command ?sho cdp neighbor detail?? A.) The incoming/outgoing interface. B.) The hardware platform. C.) One address per protocol. D.) Amount of Flash Memory Available E.) The routers hostname. F.) The subnet mask, if IP is configured.
How ICMP is used in ping and traceroute facilities
Which technology is used by Catalyst switches to resolve topology loops and ensure data flows properly through a single network path? A. virtual LANS (VLANS) B. frame filtering C. cut-through switching D. spanning-tree protocol
What is the distance limitation for 100BaseT? A. 607 ft B. 25 Meters C. 1,000 ft D. 185 Meters
How broadcast is created in switch
What is the draw back of eigrp protocol?
what is firwall and how to work right now my company having a cisco firwall ASA 5505.So please how to block some site on that which form user not able to access site and basic firwall config and why are we using firwall please jittendra explain it.can u send me doc of firwall in my gmail id - dsoni89@gmail.com
Identify the command to display the status of the Frame Relay virtual circuit? A.) Router# show frame-relay virtual-circuit B.) Router(config)# show frame-relay pvc C.) Router# show frame-relay pvc D.) Router# show virtual
Tell me how many reserve ports?
Which command we give if router ios stucked?
Explain the difference between half-duplex and full-duplex?
routing information
CCNA 
