diff --git a/Dockerfile b/Dockerfile
index 13c656e..48c57a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -76,4 +76,4 @@ RUN pip3 install virtualenv \
 RUN /app/env/bin/paver install_deps
 
 CMD /app/env/bin/python3 /app/sideboard/run_server.py
-EXPOSE 8282
+EXPOSE 80
diff --git a/sideboard/lib/_cp.py b/sideboard/lib/_cp.py
index 650c651..8c9ba70 100644
--- a/sideboard/lib/_cp.py
+++ b/sideboard/lib/_cp.py
@@ -13,8 +13,88 @@
     import cherrys
     cherrypy.lib.sessions.RedisSession = cherrys.RedisSession
 except ImportError:
-    # cherrys not installed, so redis sessions not supported
-    pass
+    from cherrypy.lib.sessions import Session
+    import redis
+    from redis import Sentinel
+
+    class RedisSession(Session):
+
+        # the default settings
+        host = '127.0.0.1'
+        port = 6379
+        db = 0
+        password = None
+        tls_skip_verify = False
+        is_sentinel = False
+        ssl = False
+        user = ""
+
+
+        @classmethod
+        def setup(cls, **kwargs):
+            """Set up the storage system for redis-based sessions.
+            Called once when the built-in tool calls sessions.init.
+            """
+            # overwritting default settings with the config dictionary values
+            for k, v in kwargs.items():
+                setattr(cls, k, v)
+
+            if cls.tls_skip_verify:
+                cls.ssl_cert_req=None
+            else:
+                cls.ssl_cert_req="required"
+
+            if cls.is_sentinel:
+                sentinel = Sentinel([(cls.host, cls.port)], ssl=cls.ssl, ssl_cert_reqs=cls.ssl_cert_req, sentinel_kwargs={"password":cls.sentinel_pass, "ssl": cls.ssl, "ssl_cert_reqs": cls.ssl_cert_req}, username=cls.user, password=cls.password)
+                cls.cache = sentinel.master_for(cls.sentinel_service)
+                
+            else:
+                cls.cache = redis.Redis(
+                    host=cls.host,
+                    port=cls.port,
+                    db=cls.db,
+                    ssl=cls.ssl,
+                    username=cls.user,
+                    password=cls.password)
+
+        def _exists(self):
+            return bool(self.cache.exists(self.prefix+self.id))
+
+        def _load(self):
+            try:
+            return pickle.loads(self.cache.get(self.prefix+self.id))
+            except TypeError:
+            # if id not defined pickle can't load None and raise TypeError
+            return None
+
+        def _save(self, expiration_time):
+            pickled_data = pickle.dumps(
+                (self._data, expiration_time),
+                pickle.HIGHEST_PROTOCOL)
+
+            result = self.cache.setex(self.prefix+self.id, self.timeout * 60, pickled_data)
+
+            if not result:
+                raise AssertionError("Session data for id %r not set." % self.prefix+self.id)
+
+        def _delete(self):
+            self.cache.delete(self.prefix+self.id)
+
+        # http://docs.cherrypy.org/dev/refman/lib/sessions.html?highlight=session#locking-sessions
+        # session id locks as done in RamSession
+
+        locks = {}
+
+        def acquire_lock(self):
+            """Acquire an exclusive lock on the currently-loaded session data."""
+            self.locked = True
+            self.locks.setdefault(self.prefix+self.id, threading.RLock()).acquire()
+
+        def release_lock(self):
+            """Release the lock on the currently-loaded session data."""
+            self.locks[self.prefix+self.id].release()
+            self.locked = False
+    cherrypy.lib.sessions.RedisSession = RedisSession
 
 import sideboard.lib
 from sideboard.lib import log, config, serializer
diff --git a/test-defaults.ini b/test-defaults.ini
index 970fdb0..36712bd 100644
--- a/test-defaults.ini
+++ b/test-defaults.ini
@@ -23,7 +23,7 @@ server.socket_host = "127.0.0.1"
 #
 # See https://eklitzke.org/binding-on-port-zero
 #
-server.socket_port = 8282
+server.socket_port = 80
 
 
 [loggers]