diff --git a/RLA/auto_ftp.py b/RLA/auto_ftp.py
index f23bf9c..4a177b4 100644
--- a/RLA/auto_ftp.py
+++ b/RLA/auto_ftp.py
@@ -9,20 +9,21 @@
 import pysftp
 
 
-def ftp_factory(name, server, username, password, ignore=None):
+def ftp_factory(name, server, username, password, port, ignore=None):
     if name == FTP_PROTOCOL_NAME.FTP:
-        return FTPHandler(ftp_server=server, username=username,password=password, ignore=ignore)
+        return FTPHandler(ftp_server=server, username=username,password=password, port=port, ignore=ignore)
     elif name == FTP_PROTOCOL_NAME.SFTP:
-        return SFTPHandler(sftp_server=server, username=username, password=password, ignore=ignore)
+        return SFTPHandler(sftp_server=server, username=username, password=password, port=port, ignore=ignore)
     else:
         raise NotImplementedError
 
 class FTPHandler(object):
 
-    def __init__(self, ftp_server, username, password, ignore=None):
+    def __init__(self, ftp_server, username, password, port, ignore=None):
         self.ftp_server = ftp_server
         self.username = username
         self.password = password
+        self.port=port
         self.ftp = self.ftpconnect()
         logger.info("login success.")
         self.ignore = ignore
@@ -53,7 +54,7 @@ def ignore_match(self, files):
     def ftpconnect(self):
         ftp = FTP()
         ftp.set_debuglevel(0)
-        ftp.connect(self.ftp_server, 21, timeout=60)
+        ftp.connect(self.ftp_server, int(self.port), timeout=60)
         ftp.login(self.username, self.password)
         logger.warn("login succeed")
         return ftp
@@ -140,10 +141,11 @@ def close(self):
 
 class SFTPHandler(FTPHandler):
 
-    def __init__(self, sftp_server, username, password, ignore=None):
+    def __init__(self, sftp_server, username, password, port, ignore=None):
         self.sftp_server = sftp_server
         self.username = username
         self.password = password
+        self.port = port 
         self.sftp = self.sftpconnect()
         logger.info("login success.")
         self.ignore = ignore
@@ -152,7 +154,9 @@ def __init__(self, sftp_server, username, password, ignore=None):
             self.__init_gitignore()
 
     def sftpconnect(self):
-        sftp = pysftp.Connection(self.sftp_server, username=self.username, password=self.password)
+        cnopts = pysftp.CnOpts()
+        cnopts.hostkeys = None
+        sftp = pysftp.Connection(self.sftp_server, username=self.username, port = int(self.port), password=self.password, cnopts=cnopts)
         logger.warn("login succeed")
         return sftp
 
diff --git a/RLA/easy_log/tester.py b/RLA/easy_log/tester.py
index a54f42c..ba7b2ed 100644
--- a/RLA/easy_log/tester.py
+++ b/RLA/easy_log/tester.py
@@ -354,7 +354,8 @@ def sync_log_file(self, skip_error=False):
         """
         syn_log_file is an automatic synchronization function.
         It will send all log files (e.g., code/**, checkpoint/**, log/**, etc.) to your target server via the FTP protocol.
-        To run this function, you should add some configuration on SRG.private_config.py
+        To run this function, you should add some configuration on rla_config.yaml.
+        We transfer files in SFTP by setting cnopts.hostkeys=None for convenience which is not safe.
 
         SEND_LOG_FILE: boolean. denotes synchronization or not.
         ftp_server: target server ip address
@@ -393,7 +394,8 @@ def send_data(ftp_obj):
                 ftp = ftp_factory(name=self.private_config["REMOTE_SETTING"]['file_transfer_protocol'],
                                   server=self.private_config["REMOTE_SETTING"]["ftp_server"],
                                   username=self.private_config["REMOTE_SETTING"]["username"],
-                                   password=self.private_config["REMOTE_SETTING"]["password"])
+                                   password=self.private_config["REMOTE_SETTING"]["password"],
+                                   port=self.private_config["REMOTE_SETTING"]["port"])
                 if self.private_config["REMOTE_SETTING"]['file_transfer_protocol'] == 'ftp':
                     alternative_protocol = 'sftp'
                 else:
@@ -407,7 +409,8 @@ def send_data(ftp_obj):
                     ftp = ftp_factory(name=alternative_protocol,
                                       server=self.private_config["REMOTE_SETTING"]["ftp_server"],
                                       username=self.private_config["REMOTE_SETTING"]["username"],
-                                      password=self.private_config["REMOTE_SETTING"]["password"])
+                                      password=self.private_config["REMOTE_SETTING"]["password"],
+                                      port=self.private_config["REMOTE_SETTING"]["port"])
                     send_data(ftp_obj=ftp)
                     logger.warn("sync: send success!")
                 except Exception as e: