diff --git a/ncat/config.h.in b/ncat/config.h.in
index 3ef265ebf..be72c67ab 100644
--- a/ncat/config.h.in
+++ b/ncat/config.h.in
@@ -43,6 +43,9 @@
 /* Define to 1 if you have the `memset' function. */
 #undef HAVE_MEMSET
 
+/* Define to 1 if you have the `mkstemp' function. */
+#undef HAVE_MKSTEMP
+
 /* Define to 1 if you have the <netdb.h> header file. */
 #undef HAVE_NETDB_H
 
diff --git a/ncat/configure b/ncat/configure
index 3001a5e78..013bc7237 100755
--- a/ncat/configure
+++ b/ncat/configure
@@ -4401,7 +4401,7 @@ fi
 done
 
 
-for ac_func in dup2 gettimeofday inet_ntoa memset select socket strcasecmp strchr strdup strerror strncasecmp strtol
+for ac_func in dup2 gettimeofday inet_ntoa memset mkstemp select socket strcasecmp strchr strdup strerror strncasecmp strtol
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
diff --git a/ncat/configure.ac b/ncat/configure.ac
index f42e624ab..a3afade0a 100644
--- a/ncat/configure.ac
+++ b/ncat/configure.ac
@@ -51,7 +51,7 @@ AC_FUNC_FORK
 AC_FUNC_SELECT_ARGTYPES
 AC_TYPE_SIGNAL
 AC_FUNC_VPRINTF
-AC_CHECK_FUNCS([dup2 gettimeofday inet_ntoa memset select socket strcasecmp strchr strdup strerror strncasecmp strtol])
+AC_CHECK_FUNCS([dup2 gettimeofday inet_ntoa memset mkstemp select socket strcasecmp strchr strdup strerror strncasecmp strtol])
 AC_SEARCH_LIBS(setsockopt, socket)
 # Ncat does not call gethostbyname directly, but some of the libraries
 # it links to (such as libpcap) do. Instead it calls getaddrinfo. At
diff --git a/ncat/ncat_connect.c b/ncat/ncat_connect.c
index 1aea7f2a4..515b0cb39 100644
--- a/ncat/ncat_connect.c
+++ b/ncat/ncat_connect.c
@@ -909,9 +909,20 @@ int ncat_connect(void)
         {
             if (srcaddr.storage.ss_family != AF_UNIX) {
                 char *tmp_name = NULL;
+#if HAVE_MKSTEMP
+              char *tmpdir = getenv("TMPDIR");
+              size_t size=0, offset=0;
+              strbuf_sprintf(&tmp_name, &size, &offset, "%s/ncat.XXXXXX",
+                  tmpdir ? tmpdir : "/tmp");
+              if (mkstemp(tmp_name) == -1) {
+                bye("Failed to create name for temporary DGRAM source Unix domain socket (mkstemp).");
+              }
+              unlink(tmp_name);
+#else
                 /* If no source socket was specified, we have to create temporary one. */
                 if ((tmp_name = tempnam(NULL, "ncat.")) == NULL)
                     bye("Failed to create name for temporary DGRAM source Unix domain socket (tempnam).");
+#endif
 
                 srcaddr.un.sun_family = AF_UNIX;
                 strncpy(srcaddr.un.sun_path, tmp_name, sizeof(srcaddr.un.sun_path));