diff --git a/README.md b/README.md
index df2378a..374712c 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ Bind options:
  -b <port>           port number for binding
 
 Forward options:
+ -T <timeout>        port forwarding timeout in seconds
  -t <address>        domain name or address to forward target
  -p <port>           port number to forward target (0: use public port)
 ```
diff --git a/src/hev-conf.c b/src/hev-conf.c
index 9902470..462837d 100644
--- a/src/hev-conf.c
+++ b/src/hev-conf.c
@@ -20,6 +20,7 @@ static int mode = SOCK_STREAM;
 static int type = AF_UNSPEC;
 static int keep;
 static int dmon;
+static int tmsec;
 
 static char mport[16];
 static char sport[16] = "3478";
@@ -56,6 +57,7 @@ hev_conf_help (void)
         " -b <port>           port number for binding\n"
         "\n"
         "Forward options:\n"
+        " -T <timeout>        port forwarding timeout in seconds\n"
         " -t <address>        domain name or address to forward target\n"
         " -p <port>           port number to forward target (0: use public port)\n";
 
@@ -67,7 +69,7 @@ hev_conf_init (int argc, char *argv[])
 {
     int opt;
 
-    while ((opt = getopt (argc, argv, "46udk:s:h:e:b:t:p:i:")) != -1) {
+    while ((opt = getopt (argc, argv, "46udk:s:h:e:b:T:t:p:i:")) != -1) {
         switch (opt) {
         case '4':
             type = AF_INET;
@@ -96,6 +98,9 @@ hev_conf_init (int argc, char *argv[])
         case 'b':
             bport = optarg;
             break;
+        case 'T':
+            tmsec = strtoul (optarg, NULL, 10) * 1000;
+            break;
         case 't':
             taddr = optarg;
             break;
@@ -133,6 +138,10 @@ hev_conf_init (int argc, char *argv[])
 
     baddr = (type == AF_INET6) ? "::" : "0.0.0.0";
 
+    if (tmsec <= 0) {
+        tmsec = 120000;
+    }
+
     return 0;
 }
 
@@ -196,6 +205,12 @@ hev_conf_tport (void)
     return tport;
 }
 
+int
+hev_conf_tmsec (void)
+{
+    return tmsec;
+}
+
 const char *
 hev_conf_mport (int port)
 {
diff --git a/src/hev-conf.h b/src/hev-conf.h
index 051c7ca..9ce41f3 100644
--- a/src/hev-conf.h
+++ b/src/hev-conf.h
@@ -120,6 +120,15 @@ const char *hev_conf_taddr (void);
  */
 const char *hev_conf_tport (void);
 
+/**
+ * hev_conf_tmsec:
+ *
+ * Get timeout millseconds for port forwarding.
+ *
+ * Returns: returns integer number.
+ */
+int hev_conf_tmsec (void);
+
 /**
  * hev_conf_mport:
  * @port: port number
diff --git a/src/hev-tfwd.c b/src/hev-tfwd.c
index c64d706..80a8617 100644
--- a/src/hev-tfwd.c
+++ b/src/hev-tfwd.c
@@ -36,9 +36,9 @@ yielder (HevTaskYieldType type, void *data)
 static void
 client_task_entry (void *data)
 {
-    int timeout = 120000;
     const char *addr;
     const char *port;
+    int timeout;
     int mode;
     int sfd;
     int dfd;
@@ -47,6 +47,7 @@ client_task_entry (void *data)
     mode = hev_conf_mode ();
     addr = hev_conf_taddr ();
     port = hev_conf_tport ();
+    timeout = hev_conf_tmsec ();
 
     if (strtoul (port, NULL, 10) == 0)
         port = hev_conf_mport (-1);
diff --git a/src/hev-ufwd.c b/src/hev-ufwd.c
index 4edf411..c3f0bc3 100644
--- a/src/hev-ufwd.c
+++ b/src/hev-ufwd.c
@@ -151,13 +151,14 @@ static void
 client_task_entry (void *data)
 {
     const int bufsize = 2048;
-    int timeout = 120000;
     struct sockaddr *pa;
     char buf[bufsize];
     Session *s = data;
+    int timeout;
 
     pa = (struct sockaddr *)&s->addr;
     hev_task_add_fd (hev_task_self (), s->fd, POLLIN);
+    timeout = hev_conf_tmsec ();
 
     for (;;) {
         int len;