feat(security): support firewall in ssh requests, and add filter table command. #6
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…stener Add SSHD firewall access request handling and session listener to manage firewall rules for SSH connections. This includes the ability to allow or deny access based on user credentials and IP addresses. Introduce a command for managing filter entries in the system's filter table, allowing users to add, remove, list, and show details of specific identifiers like IP addresses and user IDs. Also, update the SSHD configuration to support session listeners for enhanced security management.
Improve the retrieval of the request IP address and add logging for established sessions. Refactor session event handling to ensure proper firewall filtering based on user authentication.
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This pull request introduces a new SSHD firewall integration for session-level access control, along with minor improvements to existing code. The most significant changes include adding a session listener for SSHD sessions to enforce firewall rules, implementing a request object for firewall checks, introducing an in-application shell command to dynamically manage the SSHD filter table, and updating configuration to support these features.
Highlights
SshdFirewallSessionListener, a newSessionListenerservice that intercepts SSHD session creation and validates incoming connections against registered firewall rules, enforcing allow/deny decisions in real time.SshdFirewallAccessRequest, a dedicated request object encapsulating user identity and source IP address, providing structured context for firewall policy evaluation during SSHD authentication and session establishment.FilterTableCommand, a new shell command that enables administrators to dynamically inspect, add, remove, or flush firewall filter rules at runtime.