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CBAC - ip inspect tcp block-non-session - Cisco Learning Network The ip inspect tcp block-non-session command is in charge of dropping connection attempts that do not belong to any of the existing TCP sessions For instance, if a TCP segment containing flags other than the SYN is received and does not have an associated entry in the state table, it will not be allowed through the firewall
ASA Default Inspection - Cisco Learning Network My ASA has only default inspection configured, nothing customized What's giving me a hard time is the fact that if I try to open telnet from PC that is connected on the inside interface of ASA with destination of the server connected on the outside interface, this telnet gets established It does because the asa keeps this connection in the "conn table State table" and dynamically allowing
icmp inspect and acl - Cisco Learning Network Traceroute would be a reason why we would need an ICMP ACL along with the ICMP inspection on the firewall Let's start off with ICMP inspection As already mentioned, ICMP inspection is just a way to allow the firewall to inspect the outgoing ICMP packets and allowing the responses to those packets without having to explicitly allow that traffic on the firewall ACL
Zone Based Firewall Part 1 - Cisco Learning Network Zone-Based Policy Firewall (ZBPF) (Zone Based Firewall) is the successor of Cisco IOS Legacy Firewall called (CBAC) Context-Based Access Control Concept of ZBPF is zone, which groups different interfaces sharing the same security attributes or the same level of trust Permissions for traffic forwarding is made between the zones or within a zone, not between physical interfaces
Intelligent Proxy in Cisco Umbrella how it works The solution is the "Intelligent Proxy" with "SSL Decryption" features The intelligent proxy is the ability for Cisco Umbrella to intercept and proxy web requests to inspect the content of the web traffic We can classify by categories which type of web traffic we want to proxy and apply SSL decryption
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