make lan server test only a few ports, add run time test grace period in service detection attack prevetion mechanism

src/lan/server/__init__.py

@@ -3,6 +3,7 @@
 LAN transport server thread
 """
 import ipaddress
+import time
 from threading import Thread
 
 from gevent.pywsgi import WSGIServer
@@ -36,6 +37,7 @@ from utils.bettersleep import better_sleep
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 """
 ports = range(1337, 1340)
+_start_time = time.time()
 
 class LANServer:
     def __init__(self, shared_state):
@@ -50,6 +52,7 @@ class LANServer:
         @app.before_request
         def dns_rebinding_prevention():
             if request.remote_addr in lan_ips or ipaddress.ip_address(request.remote_addr).is_loopback:
+                if time.time() - _start_time < 600:
                     abort(403)
             if request.host != f'{self.host}:{self.port}':
                 logger.warn('Potential DNS rebinding attack on LAN server:')

src/runtests/lanservertest.py

@@ -10,7 +10,7 @@ import logger
 
 def test_lan_server(testmanager):
     start_time = get_epoch()
-    for i in range(1024, 65536):
+    for i in range(1337, 1340):
         try:
             if requests.get(f"http://{best_ip}:{i}/ping").text == 'onionr!':
                 bl = insert('test data')