diff --git a/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Auth/AuthHandlerTests.cs b/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Auth/AuthHandlerTests.cs
index 4c1c048..c950e55 100644
--- a/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Auth/AuthHandlerTests.cs
+++ b/dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Auth/AuthHandlerTests.cs
@@ -12,6 +12,7 @@
 // limitations under the License.
 
 using Shouldly;
+using ZB.MOM.NatsNet.Server;
 using ZB.MOM.NatsNet.Server.Auth;
 
 namespace ZB.MOM.NatsNet.Server.Tests.Auth;
@@ -381,4 +382,68 @@ public class AuthHandlerTests
     {
         AuthHandler.ConnectionTypes.IsKnown(ct).ShouldBe(expected);
     }
+
+    // =========================================================================
+    // GetAuthErrClosedState — Go test ID 153 (T:153)
+    // Mirrors the closed-state logic exercised by TestAuthProxyRequired.
+    // (The full Go test is server-dependent; this covers the pure unit subset.)
+    // =========================================================================
+
+    /// <summary>
+    /// Mirrors the proxy-required branch of TestAuthProxyRequired (T:153).
+    /// </summary>
+    [Fact] // T:153
+    public void GetAuthErrClosedState_ProxyRequired_ReturnsProxyRequired()
+    {
+        var state = AuthHandler.GetAuthErrClosedState(new AuthProxyRequiredException());
+        state.ShouldBe(ClosedState.ProxyRequired);
+    }
+
+    [Fact]
+    public void GetAuthErrClosedState_ProxyNotTrusted_ReturnsProxyNotTrusted()
+    {
+        var state = AuthHandler.GetAuthErrClosedState(new AuthProxyNotTrustedException());
+        state.ShouldBe(ClosedState.ProxyNotTrusted);
+    }
+
+    [Fact]
+    public void GetAuthErrClosedState_OtherException_ReturnsAuthenticationViolation()
+    {
+        var state = AuthHandler.GetAuthErrClosedState(new InvalidOperationException("bad"));
+        state.ShouldBe(ClosedState.AuthenticationViolation);
+    }
+
+    [Fact]
+    public void GetAuthErrClosedState_NullException_ReturnsAuthenticationViolation()
+    {
+        var state = AuthHandler.GetAuthErrClosedState(null);
+        state.ShouldBe(ClosedState.AuthenticationViolation);
+    }
+
+    // =========================================================================
+    // ValidateProxies
+    // =========================================================================
+
+    [Fact]
+    public void ValidateProxies_ProxyRequiredWithoutProxyProtocol_ReturnsError()
+    {
+        var opts = new ServerOptions { ProxyRequired = true, ProxyProtocol = false };
+        var err = AuthHandler.ValidateProxies(opts);
+        err.ShouldNotBeNull();
+        err!.Message.ShouldContain("proxy_required");
+    }
+
+    [Fact]
+    public void ValidateProxies_ProxyRequiredWithProxyProtocol_ReturnsNull()
+    {
+        var opts = new ServerOptions { ProxyRequired = true, ProxyProtocol = true };
+        AuthHandler.ValidateProxies(opts).ShouldBeNull();
+    }
+
+    [Fact]
+    public void ValidateProxies_NeitherSet_ReturnsNull()
+    {
+        var opts = new ServerOptions();
+        AuthHandler.ValidateProxies(opts).ShouldBeNull();
+    }
 }
diff --git a/porting.db b/porting.db
index 96f9e57..4e1ba21 100644
Binary files a/porting.db and b/porting.db differ
diff --git a/reports/current.md b/reports/current.md
index d3c67b6..28f7551 100644
--- a/reports/current.md
+++ b/reports/current.md
@@ -1,6 +1,6 @@
 # NATS .NET Porting Status Report
 
-Generated: 2026-02-27 00:04:02 UTC
+Generated: 2026-02-27 00:07:45 UTC
 
 ## Modules (12 total)
 
@@ -21,11 +21,11 @@ Generated: 2026-02-27 00:04:02 UTC
 
 | Status | Count |
 |--------|-------|
-| complete | 208 |
-| deferred | 162 |
+| complete | 209 |
+| deferred | 201 |
 | n_a | 187 |
 | not_started | 2527 |
-| stub | 59 |
+| stub | 19 |
 | verified | 114 |
 
 ## Library Mappings (36 total)
@@ -37,4 +37,4 @@ Generated: 2026-02-27 00:04:02 UTC
 
 ## Overall Progress
 
-**4193/6942 items complete (60.4%)**
+**4194/6942 items complete (60.4%)**
diff --git a/reports/report_91f86b9.md b/reports/report_91f86b9.md
new file mode 100644
index 0000000..28f7551
--- /dev/null
+++ b/reports/report_91f86b9.md
@@ -0,0 +1,40 @@
+# NATS .NET Porting Status Report
+
+Generated: 2026-02-27 00:07:45 UTC
+
+## Modules (12 total)
+
+| Status | Count |
+|--------|-------|
+| not_started | 1 |
+| verified | 11 |
+
+## Features (3673 total)
+
+| Status | Count |
+|--------|-------|
+| complete | 3368 |
+| n_a | 26 |
+| verified | 279 |
+
+## Unit Tests (3257 total)
+
+| Status | Count |
+|--------|-------|
+| complete | 209 |
+| deferred | 201 |
+| n_a | 187 |
+| not_started | 2527 |
+| stub | 19 |
+| verified | 114 |
+
+## Library Mappings (36 total)
+
+| Status | Count |
+|--------|-------|
+| mapped | 36 |
+
+
+## Overall Progress
+
+**4194/6942 items complete (60.4%)**