IP access-group 122 in command is used to add an access list to the interface.
What is the interface for filtering the incoming packets?
On the basis of the protocol, IP address, and port number, an IP packet-filtering router allows or denies packets to enter or leave the network via the interface (incoming and outgoing). TCP, UDP, HTTP, SMTP, or FTP are examples of protocols
Packet filtering is classified into four types:
Hence to conclude that filtering can be done by the protocol IP access-group 122 in
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