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To deny access to DNS on port 53 using an access-list in a Cisco router, you would use the following command:
access-list 100 deny udp any any eq 53
This command creates an access-list numbered 100 that denies all UDP traffic from any source to any destination on port 53. You would then apply this access-list to the appropriate interface in the inbound or outbound direction, depending on your network design.
What else can I help you with?
How setup accesslist in cisco?
To set up an access list in Cisco, you typically use the Command Line Interface (CLI). First, enter global configuration mode by typing configure terminal. Then, create an access list using the command access-list [number] [permit/deny] [source] [wildcard mask]. Finally, apply the access list to an interface with the command ip access-group [number] in|out, depending on whether you want to filter incoming or outgoing traffic.
How do you deny access to the desktop?
You can deny the access to the desktop by using the control panel.
Which type of access list would permit or deny part of a protocol suite?
Extended
How do you write deny in a sentence?
I deny the accusation that I ate the doughnut.
What is use of access deny option?
AnswerIf use of access deny option. Without your permission no one can Access you computer and also not install any program without your permission.
What does the deny access module in Drupal do?
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.
How do you deny access to Facebook in my router?
Since Facebook uses a limited range of IP addresses, blocking those addresses on the router will effectively deny access to Facebook.
How do you deny cats access to your home?
Get a large dog.
Give you sentence with word deny?
Deny: a verb; to withdraw permission, or to contradict existence (typically of a fact).In two sentences:1. Your computer may deny you access to your information.2. I deny this answer to your question!
If you are using standard access list the subnet of 172.16.11.240 to deny with access the network what will be your first command?
sh access-list
What is analogy of assert and deny?
Assert : Deny what would that analogy be?
How do you write an ACL for cisco routers?
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.
