diff --git a/src/Microsoft.TemplateEngine.Orchestrator.RunnableProjects/Macros/Config/GeneratePortNumberConfig.cs b/src/Microsoft.TemplateEngine.Orchestrator.RunnableProjects/Macros/Config/GeneratePortNumberConfig.cs
index 1c5fe874558..0ad7b6d4e33 100644
--- a/src/Microsoft.TemplateEngine.Orchestrator.RunnableProjects/Macros/Config/GeneratePortNumberConfig.cs
+++ b/src/Microsoft.TemplateEngine.Orchestrator.RunnableProjects/Macros/Config/GeneratePortNumberConfig.cs
@@ -10,17 +10,31 @@ namespace Microsoft.TemplateEngine.Orchestrator.RunnableProjects.Macros.Config
 {
     internal class GeneratePortNumberConfig : IMacroConfig
     {
+        // sources of unsafe ports:
+        //   * chrome:  https://chromium.googlesource.com/chromium/src.git/+/refs/heads/master/net/base/port_util.cc#27
+        //   * firefox: https://www-archive.mozilla.org/projects/netlib/portbanning#portlist
+        //   * safari:  https://github.com/WebKit/WebKit/blob/42f5a93823a7f087a800cd65c6bc0551dbeb55d3/Source/WTF/wtf/URL.cpp#L969
         private static readonly HashSet<int> UnsafePorts = new HashSet<int>()
         {
-                    2049, // nfs
-                    3659, // apple-sasl / PasswordServer
-                    4045, // lockd
-                    6000, // X11
-                    6665, // Alternate IRC [Apple addition]
-                    6666, // Alternate IRC [Apple addition]
-                    6667, // Standard IRC [Apple addition]
-                    6668, // Alternate IRC [Apple addition]
-                    6669, // Alternate IRC [Apple addition]
+            1719, // H323 (RAS)
+            1720, // H323 (Q931)
+            1723, // H323 (H245)
+            2049, // NFS
+            3659, // apple-sasl / PasswordServer [Apple addition]
+            4045, // lockd
+            4190, // ManageSieve [Apple addition]
+            5060, // SIP
+            5061, // SIPS
+            6000, // X11
+            6566, // SANE
+            6665, // Alternate IRC [Apple addition]
+            6666, // Alternate IRC [Apple addition]
+            6667, // Standard IRC [Apple addition]
+            6668, // Alternate IRC [Apple addition]
+            6669, // Alternate IRC [Apple addition]
+            6679, // Alternate IRC SSL [Apple addition]
+            6697, // IRC+SSL [Apple addition]
+            10080, // amanda
         };
 
         internal GeneratePortNumberConfig(string variableName, string? dataType, int fallback, int low, int high)