diff --git a/tpws/helpers.c b/tpws/helpers.c
index feb85b9..5ef0261 100644
--- a/tpws/helpers.c
+++ b/tpws/helpers.c
@@ -229,3 +229,35 @@ time_t file_mod_time(const char *filename)
 	struct stat st;
 	return stat(filename,&st)==-1 ? 0 : st.st_mtime;
 }
+
+bool pf_in_range(uint16_t port, const port_filter *pf)
+{
+	return port && ((!pf->from && !pf->to || port>=pf->from && port<=pf->to) ^ pf->neg);
+}
+bool pf_parse(const char *s, port_filter *pf)
+{
+	unsigned int v1,v2;
+
+	if (!s) return false;
+	if (*s=='~') 
+	{
+		pf->neg=true;
+		s++;
+	}
+	else
+		pf->neg=false;
+	if (sscanf(s,"%u-%u",&v1,&v2)==2)
+	{
+		if (!v1 || v1>65535 || v2>65535 || v1>v2) return false;
+		pf->from=(uint16_t)v1;
+		pf->to=(uint16_t)v2;
+	}
+	else if (sscanf(s,"%u",&v1)==1)
+	{
+		if (!v1 || v1>65535) return false;
+		pf->to=pf->from=(uint16_t)v1;
+	}
+	else
+		return false;
+	return true;
+}
diff --git a/tpws/helpers.h b/tpws/helpers.h
index 00a1bc4..14cc220 100644
--- a/tpws/helpers.h
+++ b/tpws/helpers.h
@@ -47,3 +47,11 @@ static inline void phton16(uint8_t *p, uint16_t v) {
 int fprint_localtime(FILE *F);
 
 time_t file_mod_time(const char *filename);
+
+typedef struct
+{
+	uint16_t from,to;
+	bool neg;
+} port_filter;
+bool pf_in_range(uint16_t port, const port_filter *pf);
+bool pf_parse(const char *s, port_filter *pf);
diff --git a/tpws/params.h b/tpws/params.h
index 8b608e8..13bc36a 100644
--- a/tpws/params.h
+++ b/tpws/params.h
@@ -8,6 +8,7 @@
 #include <time.h>
 #include "tpws.h"
 #include "pools.h"
+#include "helpers.h"
 
 #define HOSTLIST_AUTO_FAIL_THRESHOLD_DEFAULT	3
 #define	HOSTLIST_AUTO_FAIL_TIME_DEFAULT 	60
@@ -25,12 +26,6 @@ struct bind_s
 	int bind_wait_ifup,bind_wait_ip,bind_wait_ip_ll;
 };
 
-typedef struct
-{
-	uint16_t from,to;
-	bool neg;
-} port_filter;
-
 struct params_s
 {
 	struct bind_s binds[MAX_BINDS];
diff --git a/tpws/tpws_conn.c b/tpws/tpws_conn.c
index 1fcd593..0e2dec9 100644
--- a/tpws/tpws_conn.c
+++ b/tpws/tpws_conn.c
@@ -1530,37 +1530,3 @@ ex:
 	if (resolve_pipe[1]) close(resolve_pipe[1]);
 	return retval;
 }
-
-
-bool pf_in_range(uint16_t port, const port_filter *pf)
-{
-	return port && ((!pf->from && !pf->to || port>=pf->from && port<=pf->to) ^ pf->neg);
-}
-bool pf_parse(const char *s, port_filter *pf)
-{
-	unsigned int v1,v2;
-
-	if (!s) return false;
-	if (*s=='~') 
-	{
-		pf->neg=true;
-		s++;
-	}
-	else
-		pf->neg=false;
-	if (sscanf(s,"%u-%u",&v1,&v2)==2)
-	{
-		if (!v1 || v1>65535 || v2>65535 || v1>v2) return false;
-		pf->from=(uint16_t)v1;
-		pf->to=(uint16_t)v2;
-	}
-	else if (sscanf(s,"%u",&v1)==1)
-	{
-		if (!v1 || v1>65535) return false;
-		pf->to=pf->from=(uint16_t)v1;
-	}
-	else
-		return false;
-	return true;
-}
-
diff --git a/tpws/tpws_conn.h b/tpws/tpws_conn.h
index c15b4b8..b45afb8 100644
--- a/tpws/tpws_conn.h
+++ b/tpws/tpws_conn.h
@@ -103,6 +103,3 @@ TAILQ_HEAD(tailhead, tproxy_conn);
 
 
 bool set_socket_buffers(int fd, int rcvbuf, int sndbuf);
-
-bool pf_in_range(uint16_t port, const port_filter *pf);
-bool pf_parse(const char *s, port_filter *pf);