diff --git a/NetworkPkg/Network.dsc.inc b/NetworkPkg/Network.dsc.inc
index 16f090a187..99fad885bf 100644
--- a/NetworkPkg/Network.dsc.inc
+++ b/NetworkPkg/Network.dsc.inc
@@ -7,7 +7,7 @@
 # This file defines one build flag PLATFORMX64_ENABLE to support
 # IA32 PEI and X64 DXE platform. Its default value is FALSE.
 #
-# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
 # Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
 #
 #    SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -30,6 +30,9 @@
 [LibraryClasses]
 !include NetworkPkg/NetworkLibs.dsc.inc
 
+[BuildOptions]
+!include NetworkPkg/NetworkBuildOptions.dsc.inc
+
 !if $(PLATFORMX64_ENABLE) == TRUE
 [Components.X64]
 !include NetworkPkg/NetworkComponents.dsc.inc
diff --git a/NetworkPkg/NetworkBuildOptions.dsc.inc b/NetworkPkg/NetworkBuildOptions.dsc.inc
new file mode 100644
index 0000000000..42d980d954
--- /dev/null
+++ b/NetworkPkg/NetworkBuildOptions.dsc.inc
@@ -0,0 +1,22 @@
+## @file
+# Network DSC include file for [BuildOptions] sections of all Architectures.
+#
+# This file can be included in the [BuildOptions*] section(s) of a platform DSC file
+# by using "!include NetworkPkg/NetworkBuildOptions.dsc.inc", to specify the C language
+# feature test macros (eg., API deprecation macros) according to the flags described
+# in "NetworkDefines.dsc.inc".
+#
+# Supported tool chain families: "GCC", "INTEL", "MSFT", "RVCT".
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+#    SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+!if $(NETWORK_ISCSI_ENABLE) == TRUE
+  MSFT:*_*_*_CC_FLAGS = /D ENABLE_MD5_DEPRECATED_INTERFACES
+  INTEL:*_*_*_CC_FLAGS = /D ENABLE_MD5_DEPRECATED_INTERFACES
+  GCC:*_*_*_CC_FLAGS = -D ENABLE_MD5_DEPRECATED_INTERFACES
+  RVCT:*_*_*_CC_FLAGS = -DENABLE_MD5_DEPRECATED_INTERFACES
+!endif