diff --git a/onionr/api.py b/onionr/api.py
index cec7288a..e24e21a6 100755
--- a/onionr/api.py
+++ b/onionr/api.py
@@ -99,6 +99,7 @@ class PublicAPI:
             resp.headers['X-Frame-Options'] = 'deny'
             resp.headers['X-Content-Type-Options'] = "nosniff"
             resp.headers['X-API'] = onionr.API_VERSION
+            resp.headers['Connection'] = "close"
             return resp
 
         @app.route('/')
@@ -288,6 +289,7 @@ class API:
             resp.headers['X-API'] = onionr.API_VERSION
             resp.headers['Server'] = ''
             resp.headers['Date'] = 'Thu, 1 Jan 1970 00:00:00 GMT' # Clock info is probably useful to attackers. Set to unix epoch.
+            resp.headers['Connection'] = "close"
             return resp
 
         @app.route('/board/', endpoint='board')
diff --git a/onionr/communicator2.py b/onionr/communicator2.py
index c3540e61..e258c8c8 100755
--- a/onionr/communicator2.py
+++ b/onionr/communicator2.py
@@ -140,6 +140,9 @@ class OnionrCommunicatorDaemon:
                         break
                     i.processTimer()
                 time.sleep(self.delay)
+                # Debug to print out used FDs (regular and net)
+                #proc = psutil.Process()
+                #print(proc.open_files(), len(psutil.net_connections()))
         except KeyboardInterrupt:
             self.shutdown = True
             pass
diff --git a/onionr/netcontroller.py b/onionr/netcontroller.py
index c87b5e46..c415c1a9 100644
--- a/onionr/netcontroller.py
+++ b/onionr/netcontroller.py
@@ -22,6 +22,7 @@ import subprocess, os, random, sys, logger, time, signal, config, base64, socket
 from stem.control import Controller
 from onionrblockapi import Block
 from dependencies import secrets
+from shutil import which
 
 def getOpenPort():
     # taken from (but modified) https://stackoverflow.com/a/2838309
@@ -31,6 +32,14 @@ def getOpenPort():
     port = s.getsockname()[1]
     s.close()
     return port
+
+def torBinary():
+    '''Return tor binary path or none if not exists'''
+    torPath = './tor'
+    if not os.path.exists(torPath):
+        torPath = which('tor')
+    return torPath
+
 class NetController:
     '''
         This class handles hidden service setup on Tor and I2P
diff --git a/onionr/onionr.py b/onionr/onionr.py
index e54e90bb..6ec90725 100755
--- a/onionr/onionr.py
+++ b/onionr/onionr.py
@@ -68,6 +68,10 @@ class Onionr:
         # Load global configuration data
         data_exists = Onionr.setupConfig(self.dataDir, self = self)
 
+        if netcontroller.torBinary() is None:
+            logger.error('Tor is not installed')
+            sys.exit(1)
+
         self.onionrCore = core.Core()
         #self.deleteRunFiles()
         self.onionrUtils = onionrutils.OnionrUtils(self.onionrCore)
@@ -292,7 +296,8 @@ class Onionr:
             newID = self.onionrCore._crypto.keyManager.addKey()[0]
         else:
             logger.warn('Deterministic keys require random and long passphrases.')
-            logger.warn('If a good password is not used, your key can be easily stolen.')
+            logger.warn('If a good passphrase is not used, your key can be easily stolen.')
+            logger.warn('You should use a series of hard to guess words, see this for reference: https://www.xkcd.com/936/')
             pass1 = getpass.getpass(prompt='Enter at least %s characters: ' % (self.onionrCore._crypto.deterministicRequirement,))
             pass2 = getpass.getpass(prompt='Confirm entry: ')
             if self.onionrCore._crypto.safeCompare(pass1, pass2):
@@ -760,6 +765,9 @@ class Onionr:
         try:
             while True:
                 time.sleep(3)
+                # Debug to print out used FDs (regular and net)
+                #proc = psutil.Process()
+                #print('api-files:',proc.open_files(), len(psutil.net_connections()))
                 # Break if communicator process ends, so we don't have left over processes
                 if communicatorProc.poll() is not None:
                     break
diff --git a/onionr/onionrutils.py b/onionr/onionrutils.py
index 4f936d93..3260a42b 100644
--- a/onionr/onionrutils.py
+++ b/onionr/onionrutils.py
@@ -184,9 +184,9 @@ class OnionrUtils:
         payload = 'http://%s/%s%s' % (hostname, command, data)
         try:
             if post:
-                retData = requests.post(payload, data=postData, headers={'token': config.get('client.webpassword')}, timeout=(maxWait, 30)).text
+                retData = requests.post(payload, data=postData, headers={'token': config.get('client.webpassword'), 'Connection':'close'}, timeout=(maxWait, 30)).text
             else:
-                retData = requests.get(payload, headers={'token': config.get('client.webpassword')}, timeout=(maxWait, 30)).text
+                retData = requests.get(payload, headers={'token': config.get('client.webpassword'), 'Connection':'close'}, timeout=(maxWait, 30)).text
         except Exception as error:
             if not silent:
                 logger.error('Failed to make local request (command: %s):%s' % (command, error))
@@ -624,7 +624,7 @@ class OnionrUtils:
             proxies = {'http': 'http://127.0.0.1:4444'}
         else:
             return
-        headers = {'user-agent': 'PyOnionr'}
+        headers = {'user-agent': 'PyOnionr', 'Connection':'close'}
         try:
             proxies = {'http': 'socks4a://127.0.0.1:' + str(port), 'https': 'socks4a://127.0.0.1:' + str(port)}
             r = requests.post(url, data=data, headers=headers, proxies=proxies, allow_redirects=False, timeout=(15, 30))
@@ -649,11 +649,11 @@ class OnionrUtils:
             proxies = {'http': 'http://127.0.0.1:4444'}
         else:
             return
-        headers = {'user-agent': 'PyOnionr'}
+        headers = {'user-agent': 'PyOnionr', 'Connection':'close'}
         response_headers = dict()
         try:
             proxies = {'http': 'socks4a://127.0.0.1:' + str(port), 'https': 'socks4a://127.0.0.1:' + str(port)}
-            r = requests.get(url, headers=headers, proxies=proxies, allow_redirects=False, timeout=(15, 30))
+            r = requests.get(url, headers=headers, proxies=proxies, allow_redirects=False, timeout=(15, 30), )
             # Check server is using same API version as us
             if not ignoreAPI:
                 try:
diff --git a/onionr/static-data/default_config.json b/onionr/static-data/default_config.json
index 2ef339bc..93f3a49a 100644
--- a/onionr/static-data/default_config.json
+++ b/onionr/static-data/default_config.json
@@ -7,6 +7,7 @@
         "socket_servers": false,
         "security_level": 0,
         "max_block_age": 2678400,
+        "bypass_tor_check": false,
         "public_key": ""
     },