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Which of these are the function of a firewall?
A firewall prevents an individual from using an authenticated Telnet session to compromise your internal machines or from tunneling an unauthorized protocol through another, authorized protocol.
A firewall examines all traffic routed between the two networks to see if it meets certain criteria. If it does, it is routed between the networks, otherwise it is stopped. A firewall filters both inbound and outbound traffic.
Both of these
The work of a firewall is to minimize or eliminate the occurrence of unwanted network communications activity while allowing all legitimate communication to flow freely. In most server infrastructures, firewalls provide an essential layer of security that, combined with other measures, prevent attackers from accessing your servers in malicious ways.
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