diff --git a/ide/STM32CUBE/README.md b/ide/STM32CUBE/README.md
index d4e28713..05a2fe86 100644
--- a/ide/STM32CUBE/README.md
+++ b/ide/STM32CUBE/README.md
@@ -10,7 +10,7 @@ The wolfSSH Cube Pack can be found [here](https://www.wolfssl.com/files/ide/I-CU
 
 4. In the `Software Packs` configuration category of the `.ioc` file, click on the wolfSSH pack and enable the library by checking the box.
 
-5. Since LwIP is a dependency for the Cube Pack, enable LwIP in the `Middleware` configuration category of the project. Also enable the `LWIP_DNS` option in the LwIP configuration settings.
+5. The Pack defaults to using custom IO provided by the user. Modify `ide/STM32CUBE/userio_template.h` to supply the custom IO. If you'd like to use LwIP instead, configure the wolfSSH IO settings in the `.ioc` to enable LwIP compatibilty. You'll also have to enable LwIP in the `Middleware` configuration category of the project. Enable the `LWIP_DNS` option in the LwIP configuration settings.
 
 6. Save your changes and select yes to the prompt asking about generating code.
 
@@ -19,4 +19,4 @@ The wolfSSH Cube Pack can be found [here](https://www.wolfssl.com/files/ide/I-CU
 ## Notes
 - Make sure to make [these changes](https://github.com/wolfSSL/wolfssl/tree/master/IDE/STM32Cube#stm32-printf) to redirect the printf's to the UART.
 
-- If looking to enable filesystem support, the pack assumes the user has defined their own filesystem in `wolfssh/myFilesystem.h`. That file will originally contain a dummy filesystem. If going the FATFS route, make sure to replace `#define WOLFSSH_USER_FILESYSTEM` with `#define WOLFSSH_FATFS` in the `wolfSSL.I-CUBE-wolfSSH_conf.h` header file. The wolfSSL Cube Pack also defaults to disabling filesystem support so make sure to remove `#define NO_FILESYSTEM` from `wolfSSL.I-CUBE-wolfSSL_conf.h`.
+- If looking to enable filesystem support (required for SFTP), the pack assumes the user has defined their own filesystem in `wolfssh/myFilesystem.h`. That file will originally contain a dummy filesystem. If going the FATFS route, make sure to replace `#define WOLFSSH_USER_FILESYSTEM` with `#define WOLFSSH_FATFS` in the `wolfSSL.I-CUBE-wolfSSH_conf.h` header file. The wolfSSL Cube Pack also defaults to disabling filesystem support so make sure to remove `#define NO_FILESYSTEM` from `wolfSSL.I-CUBE-wolfSSL_conf.h`.
diff --git a/ide/STM32CUBE/default_conf.ftl b/ide/STM32CUBE/default_conf.ftl
index d1ff44f3..0de5bf13 100644
--- a/ide/STM32CUBE/default_conf.ftl
+++ b/ide/STM32CUBE/default_conf.ftl
@@ -94,9 +94,11 @@ extern ${variable.value} ${variable.name};
 /* ------------------------------------------------------------------------- */
 /* wolfSSH IO */
 /* ------------------------------------------------------------------------- */
-#define WOLFSSH_LWIP
-/* Remove the LWIP define and uncomment the line below to use user defined IO */
-/* #define WOLFSSL_USER_IO */
+#if defined(WOLFSSH_CONF_IO) && WOLFSSH_CONF_IO == 2
+    #define WOLFSSH_LWIP
+#else
+    #define WOLFSSH_USER_IO
+#endif
 
 /* To be defined for the target Socket API */
 #define WSTARTTCP()
@@ -140,6 +142,8 @@ extern ${variable.value} ${variable.name};
 #define CURVE25519_SMALL
 #define HAVE_ED25519
 
+#define WOLFSSH_IGNORE_FILE_WARN
+
 typedef unsigned int size_t;
 
 /* defines for unit tests */
diff --git a/ide/STM32CUBE/myFilesystem.h b/ide/STM32CUBE/myFilesystem.h
index 13d0d813..31eefd45 100644
--- a/ide/STM32CUBE/myFilesystem.h
+++ b/ide/STM32CUBE/myFilesystem.h
@@ -40,107 +40,107 @@ typedef  struct { int i; } stat_t;
 #define WFD int
 enum { O_RDWR, O_RDONLY, O_WRONLY, O_APPEND, O_CREAT, O_TRUNC, O_EXCL } ;
 
-static int WFOPEN(FILE **f, const char *n, const char *m){
+static inline int WFOPEN(FILE **f, const char *n, const char *m){
     (void) n; (void) m; (void)f;
     return NULL;
 }
 
-static int WFCLOSE(FILE *f) {
+static inline int WFCLOSE(FILE *f) {
     (void) f;
     return 0;
 }
 
-static size_t WFREAD(void *b, size_t s, size_t n, FILE *f) {
+static inline size_t WFREAD(void *b, size_t s, size_t n, FILE *f) {
     (void) b; (void) s; (void) n; (void) f;
     return 0;
 }
 
-static size_t WFWRITE(const void *b, size_t s, size_t n, FILE *f) {
+static inline size_t WFWRITE(const void *b, size_t s, size_t n, FILE *f) {
     (void) b; (void) s; (void) n; (void) f;
     return 0;
 }
 
-static int WFSEEK(FILE *f, long int p, int m) {
+static inline int WFSEEK(FILE *f, long int p, int m) {
     (void) f; (void) p; (void) m;
     return 0;
 }
 
-static long int WFTELL(FILE *f) {
+static inline long int WFTELL(FILE *f) {
     (void) f;
     return 0;
 }
-static void WREWIND(FILE *f) {
+static inline void WREWIND(FILE *f) {
     (void) f;
 }
 
-static int WOPEN (const char* n, int f, int m) {
+static inline int WOPEN (const char* n, int f, int m) {
     (void) f; (void) n; (void) m;
     return 0;
 }
 
-static int WCLOSE(int f) {
+static inline int WCLOSE(int f) {
     (void) f;
     return 0;
 }
 
-static size_t WPREAD(int f, void* b, size_t c,  off_t *o) {
+static inline size_t WPREAD(int f, void* b, size_t c,  off_t *o) {
     (void) f; (void) b; (void) c; (void)o;
     return 0;
 }
 
-static size_t WPWRITE(int f, void* b, size_t c,  off_t *o) {
+static inline size_t WPWRITE(int f, void* b, size_t c,  off_t *o) {
     (void) f; (void) b; (void) c; (void)o;
     return 0;
 }
 
-static char *WGETCWD(void *fs, char *f, size_t l){
+static inline char *WGETCWD(void *fs, char *f, size_t l){
     (void) fs; (void) f; (void) l;
     return 0;
 }
 
-static int WRMDIR(void *fs, const char *p){
+static inline int WRMDIR(void *fs, const char *p){
      (void) p;
     return 0;
 }
 
-static int WMKDIR(void *fs, const char *p, mode_t m) {
+static inline int WMKDIR(void *fs, const char *p, mode_t m) {
     (void) p; (void) m;
     return 0;
 }
 
-static int WREMOVE(void *fs, const char *p){
+static inline int WREMOVE(void *fs, const char *p){
     (void) fs; (void) p;
     return 0;
 } 
 
-static int WRENAME(void *fs, const char *p, const char *np){
+static inline int WRENAME(void *fs, const char *p, const char *np){
     (void) fs; (void) p; (void)np;
     return 0;
 }
 
-static int WSTAT(const char *p, stat_t *b) {
+static inline int WSTAT(const char *p, stat_t *b) {
     (void) p; (void)b;
     return 0;
 }
 
-static int WLSTAT(const char *p, stat_t *b) {
+static inline int WLSTAT(const char *p, stat_t *b) {
     (void) p; (void)b;
     return 0;
 }
 
-static int WCHMOD(void *fs, const char *p, mode_t m) {
+static inline int WCHMOD(void *fs, const char *p, mode_t m) {
     (void) fs; (void) p; (void)m;
     return 0;
 }
 
-static int SFTP_GetAttributes(void* fs, const char* fileName,
+static inline int SFTP_GetAttributes(void* fs, const char* fileName,
         void* atr, byte link, void* heap) {
     (void)fs; (void)fileName; (void)atr; (void)link; (void)heap;
     return 0;
 
 }
 
-static int SFTP_GetAttributes_Handle(void* ssh, byte* handle, int handleSz,
+static inline int SFTP_GetAttributes_Handle(void* ssh, byte* handle, int handleSz,
         void* atr) {
             (void)ssh; (void)handle; (void)handleSz;
 
diff --git a/ide/STM32CUBE/userio_template.h b/ide/STM32CUBE/userio_template.h
new file mode 100644
index 00000000..4b814428
--- /dev/null
+++ b/ide/STM32CUBE/userio_template.h
@@ -0,0 +1,110 @@
+/* userio_template.h
+ *
+ * Copyright (C) 2014-2023 wolfSSL Inc.
+ *
+ * This file is part of wolfSSH.
+ *
+ * wolfSSH is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * wolfSSH is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wolfSSH.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef USERIO_TEMPLATE_H
+#define USERIO_TEMPLATE_H
+
+#ifdef WOLFSSH_USER_IO
+
+#define SOCK_STREAM     1
+#define SOCK_DGRAM      2
+#define SOCK_RAW        3
+
+#define SOL_SOCKET     0xfff
+#define SO_REUSEADDR   0x0004
+
+#define AF_INET         2
+#define INADDR_ANY      ((uint32_t)0x00000000UL)
+
+#define socklen_t uint32_t
+
+typedef struct { int s_addr; } in_addr;
+
+struct sockaddr { int i; };
+
+typedef struct sockaddr sockaddr;
+
+struct sockaddr_in{
+    int sin_len;
+    int sin_family;
+    int sin_port;
+    in_addr sin_addr;
+};
+
+typedef struct sockaddr_in sockaddr_in;
+
+struct hostent{
+    char *h_name;
+    int  h_length;
+    char **h_addr_list;
+};
+
+typedef struct hostent hostent;
+
+static inline int inet_addr(const char* n){
+    (void) n;
+    return 0;
+}
+
+static inline int htons(unsigned int n){
+    (void) n;
+    return 0;
+}
+
+static inline int ntohs(unsigned int n){
+    (void) n;
+    return 0;
+}
+
+static inline int socket(int d, int t, int p) {
+    (void) d; (void) t; (void) p;
+    return 0;
+}
+
+static inline int setsockopt(int s, int l, int n, const void *o,
+                             socklen_t len) {
+    (void) s; (void) l; (void) n; (void) o; (void) len;
+    return 0;
+}
+
+static inline int getsockname(int s, struct sockaddr *n, socklen_t* len) {
+    (void) s; (void) n; (void) len;
+    return 0;
+}
+
+static inline int bind(int s, const struct sockaddr *n, socklen_t l) {
+    (void) s; (void) n; (void) l;
+    return 0;
+}
+
+static inline int listen(int s, int b) {
+    (void) s; (void) b;
+    return 0;
+}
+
+static inline struct hostent* gethostbyname(const char* n) {
+    (void) n;
+    return NULL;
+}
+
+#endif /*  WOLFSSH_USER_IO */
+
+#endif
diff --git a/src/misc.c b/src/misc.c
index 6ff0b2c8..0567f1f5 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -51,7 +51,8 @@
 
 
 /* Check for if compiling misc.c when not needed. */
-#if !defined(WOLFSSH_MISC_INCLUDED) && !defined(NO_INLINE)
+#if !defined(WOLFSSH_MISC_INCLUDED) && !defined(NO_INLINE) && \
+    !defined(WOLFSSH_IGNORE_FILE_WARN)
     #define MISC_WARNING "misc.c does not need to be compiled when using inline (NO_INLINE not defined))"
 
     #ifndef _MSC_VER
@@ -60,7 +61,7 @@
         #pragma message("warning: " MISC_WARNING)
     #endif
 
-#else /* !WOLFSSL_MISC_INCLUDED && !NO_INLINE */
+#else /* !WOLFSSL_MISC_INCLUDED && !NO_INLINE && !WOLFSSH_IGNORE_FILE_WARN */
 
 
 #ifndef min
diff --git a/wolfssh/test.h b/wolfssh/test.h
index 91717e78..92170aaa 100644
--- a/wolfssh/test.h
+++ b/wolfssh/test.h
@@ -126,6 +126,16 @@
     #endif
     #define SOCKET_T int
     #define NUM_SOCKETS 5
+#elif defined(WOLFSSH_USER_IO)
+    #include <unistd.h>
+    #include <pthread.h>
+    #include <fcntl.h>
+    #include "userio_template.h"
+    #ifndef SO_NOSIGPIPE
+        #include <signal.h>  /* ignore SIGPIPE */
+    #endif
+    #define SOCKET_T int
+    #define NUM_SOCKETS 5
 #else /* USE_WINDOWS_API */
     #include <unistd.h>
     #include <sys/socket.h>