diff --git a/cowrie/commands/curl.py b/cowrie/commands/curl.py
index 278f5c7a..6f853491 100644
--- a/cowrie/commands/curl.py
+++ b/cowrie/commands/curl.py
@@ -332,7 +332,7 @@ Options: (H) means HTTP/HTTPS only, (F) means FTP only
                                   shasum=shasum)
 
         # Link friendly name to hash
-        os.symlink(shasum, self.safeoutfile)
+        # os.symlink(shasum, self.safeoutfile)
 
         # FIXME: is this necessary?
         # self.safeoutfile = hashPath
diff --git a/cowrie/commands/ftpget.py b/cowrie/commands/ftpget.py
index 5cf94baf..bb77eafb 100644
--- a/cowrie/commands/ftpget.py
+++ b/cowrie/commands/ftpget.py
@@ -131,7 +131,7 @@ Download a file via FTP
                                   shasum=shasum)
 
         # Link friendly name to hash
-        os.symlink(shasum, self.safeoutfile)
+        # os.symlink(shasum, self.safeoutfile)
 
         self.safeoutfile = None
 
diff --git a/cowrie/commands/nc.py b/cowrie/commands/nc.py
index 0793aca7..ac5c823a 100644
--- a/cowrie/commands/nc.py
+++ b/cowrie/commands/nc.py
@@ -34,6 +34,7 @@ usage: nc [-46bCDdhjklnrStUuvZz] [-I length] [-i interval] [-O length]
         if not args or len(args) < 2:
             self.help()
             self.exit()
+            return
 
         host = args[0]
         port = args[1]
@@ -46,10 +47,10 @@ usage: nc [-46bCDdhjklnrStUuvZz] [-I length] [-i interval] [-O length]
         if self.protocol.cfg.has_option('honeypot', 'out_addr'):
             out_addr = (self.protocol.cfg.get('honeypot', 'out_addr'), 0)
         else:
-            out_addr = '0.0.0.0'
+            out_addr = ('0.0.0.0', 0)
 
         self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        self.s.bind((out_addr, 0))
+        self.s.bind(out_addr)
         self.s.connect((host, int(port)))
         self.recv_data()
 
diff --git a/cowrie/commands/scp.py b/cowrie/commands/scp.py
index 87c5a80e..cbf05833 100644
--- a/cowrie/commands/scp.py
+++ b/cowrie/commands/scp.py
@@ -124,7 +124,6 @@ class command_scp(HoneyPotCommand):
         if os.path.exists(self.safeoutfile):
             with open(self.safeoutfile, 'rb') as f:
                 shasum = hashlib.sha256(data).hexdigest()
-                sha1sum = hashlib.sha1(data).hexdigest()
                 hash_path = os.path.join(self.download_path_uniq, shasum)
 
             # If we have content already, delete temp file
@@ -139,11 +138,10 @@ class command_scp(HoneyPotCommand):
                     filename=os.path.basename(fname),
                     url=fname,
                     outfile=shasum,
-                    shasum=shasum,
-                    sha1=sha1sum)
+                    shasum=shasum)
 
             # Link friendly name to hash
-            os.symlink(hash_path, self.safeoutfile)
+            # os.symlink(hash_path, self.safeoutfile)
 
             self.safeoutfile = None
 
diff --git a/cowrie/commands/tftp.py b/cowrie/commands/tftp.py
index 66931f33..70c70962 100644
--- a/cowrie/commands/tftp.py
+++ b/cowrie/commands/tftp.py
@@ -106,7 +106,7 @@ class command_tftp(HoneyPotCommand):
                                       shasum=shasum)
 
             # Link friendly name to hash
-            os.symlink(shasum, self.safeoutfile)
+            # os.symlink(shasum, self.safeoutfile)
 
             self.safeoutfile = None
 
diff --git a/cowrie/commands/wget.py b/cowrie/commands/wget.py
index 4d7a054f..b483ed4f 100644
--- a/cowrie/commands/wget.py
+++ b/cowrie/commands/wget.py
@@ -210,7 +210,7 @@ class command_wget(HoneyPotCommand):
                                   shasum=shasum)
 
         # Link friendly name to hash
-        os.symlink(shasum, self.safeoutfile)
+        # os.symlink(shasum, self.safeoutfile)
 
         self.safeoutfile = None
 
diff --git a/cowrie/core/artifact.py b/cowrie/core/artifact.py
index bfaf44d5..ee37f42d 100644
--- a/cowrie/core/artifact.py
+++ b/cowrie/core/artifact.py
@@ -82,11 +82,11 @@ class Artifact:
         else:
             os.rename(self.fp.name, shasumFilename)
 
-        if size>0:
-            linkName = self.artifactDir + "/" \
-                + time.strftime('%Y%m%dT%H%M%S') \
-                + "_" + re.sub('[^-A-Za-z0-9]', '_', self.label)
-            os.symlink(shasum, linkName)
+        # if size>0:
+        #    linkName = self.artifactDir + "/" \
+        #        + time.strftime('%Y%m%dT%H%M%S') \
+        #        + "_" + re.sub('[^-A-Za-z0-9]', '_', self.label)
+        #    os.symlink(shasum, linkName)
 
         return shasum, shasumFilename