diff --git a/CryptoPkg/Library/Include/CrtLibSupport.h b/CryptoPkg/Library/Include/CrtLibSupport.h
index b90da20ff7e7..e603fad763f9 100644
--- a/CryptoPkg/Library/Include/CrtLibSupport.h
+++ b/CryptoPkg/Library/Include/CrtLibSupport.h
@@ -74,20 +74,36 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 // Definitions for global constants used by CRT library routines
 //
 #define EINVAL       22               /* Invalid argument */
+#define EAFNOSUPPORT 47               /* Address family not supported by protocol family */
 #define INT_MAX      0x7FFFFFFF       /* Maximum (signed) int value */
 #define LONG_MAX     0X7FFFFFFFL      /* max value for a long */
 #define LONG_MIN     (-LONG_MAX-1)    /* min value for a long */
 #define ULONG_MAX    0xFFFFFFFF       /* Maximum unsigned long value */
 #define CHAR_BIT     8                /* Number of bits in a char */
 
+//
+// Address families.
+//
+#define AF_INET   2     /* internetwork: UDP, TCP, etc. */
+#define AF_INET6  24    /* IP version 6 */
+
+//
+// Define constants based on RFC0883, RFC1034, RFC 1035
+//
+#define NS_INT16SZ    2   /*%< #/bytes of data in a u_int16_t */
+#define NS_INADDRSZ   4   /*%< IPv4 T_A */
+#define NS_IN6ADDRSZ  16  /*%< IPv6 T_AAAA */
+
 //
 // Basic types mapping
 //
 typedef UINTN          size_t;
+typedef UINTN          u_int;
 typedef INTN           ssize_t;
 typedef INT32          time_t;
 typedef UINT8          __uint8_t;
 typedef UINT8          sa_family_t;
+typedef UINT8          u_char;
 typedef UINT32         uid_t;
 typedef UINT32         gid_t;
 
diff --git a/CryptoPkg/Library/Include/arpa/inet.h b/CryptoPkg/Library/Include/arpa/inet.h
new file mode 100644
index 000000000000..988e4e0a73e3
--- /dev/null
+++ b/CryptoPkg/Library/Include/arpa/inet.h
@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building third-party standard C / BSD sockets code.
+
+  Copyright (C) 2019, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <CrtLibSupport.h>
diff --git a/CryptoPkg/Library/Include/arpa/nameser.h b/CryptoPkg/Library/Include/arpa/nameser.h
new file mode 100644
index 000000000000..988e4e0a73e3
--- /dev/null
+++ b/CryptoPkg/Library/Include/arpa/nameser.h
@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building third-party standard C / BSD sockets code.
+
+  Copyright (C) 2019, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <CrtLibSupport.h>
diff --git a/CryptoPkg/Library/Include/netinet/in.h b/CryptoPkg/Library/Include/netinet/in.h
new file mode 100644
index 000000000000..988e4e0a73e3
--- /dev/null
+++ b/CryptoPkg/Library/Include/netinet/in.h
@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building third-party standard C / BSD sockets code.
+
+  Copyright (C) 2019, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <CrtLibSupport.h>
diff --git a/CryptoPkg/Library/Include/sys/param.h b/CryptoPkg/Library/Include/sys/param.h
new file mode 100644
index 000000000000..988e4e0a73e3
--- /dev/null
+++ b/CryptoPkg/Library/Include/sys/param.h
@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building third-party standard C / BSD sockets code.
+
+  Copyright (C) 2019, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <CrtLibSupport.h>
diff --git a/CryptoPkg/Library/Include/sys/socket.h b/CryptoPkg/Library/Include/sys/socket.h
new file mode 100644
index 000000000000..988e4e0a73e3
--- /dev/null
+++ b/CryptoPkg/Library/Include/sys/socket.h
@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building third-party standard C / BSD sockets code.
+
+  Copyright (C) 2019, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <CrtLibSupport.h>