What is the mandatory components of firewall rule?
Firewall rules should be documented, tracking the rule’s purpose, what services or applications it affects, affected users and devices, date when the rule was added, the rule’s expiration date, if applicable, and who added the rule. A good firewall policy also has a formal change procedure to manage change requests.
What is bidirectional firewall rule?
From my understanding, bidirectional firewall rule means that both the source and destination can initiate a connection to each other with the same port.
What does a stateful firewall do?
What is a stateful firewall? Stateful firewalls monitor all aspects of the traffic streams, their characteristics and communication channels. These firewalls can integrate encryption or tunnels, identify TCP connection stages, packet state and other key status updates.
Do you have to block all traffic symmetrically in a firewall?
All traffic is blocked by default and particular traffic needs to be allowed. If I answer the part related to allowing the traffic symmetrically, then the answer would be yes for stateless firewalls (packet filters) which do need keep the information on sessions. But you don’t have to for statefull firewalls which keep the session information.
What does it mean to have a stateful firewall?
Stateful firewalls maintain a table of connections. This means that once a connection is established, traffic that matches that session is allowed through the firewall.
How can Nmap bypass Windows Server firewall?
Also modern host firewalls also allow for process/program exceptions so it’s possible that during the installation of nmap the installer added a process exception for itself to the windows firewall allowing itself to bypass other rules. Thanks for contributing an answer to Information Security Stack Exchange!
What kind of firewall is Windows Server 2008?
Windows Server 2008 is installed on both machines. As others mentioned it could be related to the ordering of your firewall rules.