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Subnet-level NSGs apply to traffic entering or leaving its NICs, with any NIC NSGs also evaluated as applicable. This matters here because a malicious IP deny rule does not trigger because another outbound allow at lower numeric priority matches first.

A specific allow evaluated before the default deny admits only the intended port/source combination. Removing the default deny would widen exposure. This matters here because a malicious IP deny rule does not trigger because another outbound allow at lower numeric priority matches first.

NSG priorities process lower numbers first; evaluation stops at the first matching rule. An allow at a later priority cannot override an earlier match. This matters here because a malicious IP deny rule does not trigger because another outbound allow at lower numeric priority matches first.

Front-end existence does not imply healthy destinations. The pool, probe and rules jointly determine effective delivery. This matters here because tCP 443 works but TCP 80 is not routed through the load balancer.

HTTPS succeeding does not imply TCP 80 has its own rule. Inspect the port-80 frontend rule, backend port, probe and applicable NSG permissions rather than an unrelated management NAT mapping.

An existing HTTPS rule on port 443 does not automatically cover HTTP port 80. Compare the frontend, protocol, destination port, backend port, backend pool, and probe of the missing TCP 80 rule.

The backend pool defines eligible destinations for the load-balancing rule. Instances not in that pool will not receive its distribution.

Inbound NAT governs accepted connections addressed to a frontend port. Outbound traffic requires supported outbound-rule or NAT Gateway architecture and SNAT sizing.

Inbound distribution and outbound source translation are distinct configurations. Check supported outbound rules, available SNAT ports, or a subnet NAT Gateway according to the desired deterministic Internet egress path.

Front-end existence does not imply healthy destinations. The pool, probe and rules jointly determine effective delivery. This matters here because a backend VM receives inbound connections but cannot start outbound Internet sessions.

Private frontend addresses require connected VNet or approved private networking paths. They are not globally reachable public service endpoints. This matters here because a backend VM receives inbound connections but cannot start outbound Internet sessions.

A TCP probe confirms a listener exists, not that the application is functioning correctly. HTTP health can signal failures beyond port acceptance. This matters here because a backend VM receives inbound connections but cannot start outbound Internet sessions.

Azure Load Balancer rules match protocol and frontend port to a backend port and pool. A probe does not by itself define port mapping. This matters here because an administrator needs direct RDP access to each backend VM through different public TCP ports on one load-balancer….

An ordinary CNAME cannot coexist at a DNS name with other data records such as required apex SOA/NS. This matters here because an administrator needs direct RDP access to each backend VM through different public TCP ports on one load-balancer….

A load-balancing rule distributes matching flows to healthy backends rather than pinning an administrator to a chosen machine. Inbound NAT maps a unique frontend IP/port to the intended backend management port.

Azure Load Balancer rules match protocol and frontend port to a backend port and pool. A probe does not by itself define port mapping. This matters here because two VM admin connections both target frontend port 50001 and unexpectedly reach one server.

Public Azure DNS zones provide authoritative records; registrar delegation makes Internet resolvers query those servers. This matters here because two VM admin connections both target frontend port 50001 and unexpectedly reach one server.

Direct VM management needs an unambiguous frontend IP/port mapping. Reusing 50001 for two independent target servers cannot identify the desired backend; allocate unique frontend ports or another appropriate administration path.

Action groups define reusable notification and action destinations for Azure Monitor alerts. Each alert need not embed separate recipient details. This matters here because the output shows lowest counts at the top after sorting. What KQL keyword is missing.

KQL count aggregation summarizes event rows by severity. Detailed raw events alone do not produce grouped counts. This matters here because the output shows lowest counts at the top after sorting. What KQL keyword is missing.

Project chooses columns; summarize calculates aggregates. Reporting incident frequency needs an aggregation expression. This matters here because the output shows lowest counts at the top after sorting. What KQL keyword is missing.

Azure Monitor platform metrics provide numeric time-series signals for supported resources, including VM CPU percentage. This matters here because a platform engineer must measure failed network connections from a VM over time without packet capture. Which Azure….

Resource create/update events are not per-flow connection outcomes. Use VM Connection Monitor or supported NSG flow logs and network monitoring data for the observed failure window.

Connection monitor periodically checks reachability and reports status trends. It complements one-off connectivity diagnostics.

Flow logging records network connection metadata for analysis and troubleshooting. It is not a full packet payload capture. This matters here because connection monitor reports an unreachable endpoint but VM guest logs show a healthy service. What network layers….

IP flow verify evaluates effective NSG filtering for the specified traffic tuple and identifies the matching rule.

KQL where reduces rows by predicates, while ago supplies a relative time window. Selecting a dashboard time picker alone may not change a scripted query. This matters here because connection monitor reports an unreachable endpoint but VM guest logs show a healthy service. What network layers….

An action group runs notifications after alert evaluation; it doesn't evaluate the effective subnet and NIC NSG rules. Use Network Watcher IP flow verify on the relevant packet tuple.

Next hop reports the chosen route type and address for a specified destination from a VM. It does not simulate every packet firewall.

A healthy guest application does not guarantee the network path is open. Monitoring spans source, route and endpoint filtering. This matters here because a network administrator needs to identify which NSG rule allows or denies one traffic tuple. Which Network Watcher….

End-to-end latency includes the broader request path, while server latency measures service-side processing. Their difference may indicate network or client effects. This matters here because iP flow verify reports Deny although a visible NSG rule allows the port.

Flow telemetry is designed to show traffic patterns and dispositions, not complete application message content. This matters here because iP flow verify reports Deny although a visible NSG rule allows the port.

VM Insights is telemetry collection, not authoritative NSG packet-rule evaluation. Use the exact IP flow tuple and inspect priority and effective rules at both relevant association scopes.