diff options
| -rw-r--r-- | paramiko/transport.py | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/paramiko/transport.py b/paramiko/transport.py index ea623229..1ec63ebd 100644 --- a/paramiko/transport.py +++ b/paramiko/transport.py @@ -453,7 +453,25 @@ class BaseTransport (threading.Thread): finally: self.lock.release() return chan - + + def send_ignore(self, bytes=None): + """ + Send a junk packet across the encrypted link. This is sometimes used + to add "noise" to a connection to confuse would-be attackers. It can + also be used as a keep-alive for long lived connections traversing + firewalls. + + @param bytes: the number of random bytes to send in the payload of the + ignored packet -- defaults to a random number from 10 to 41. + @type bytes: int + """ + m = Message() + m.add_byte(chr(_MSG_IGNORE)) + if bytes is None: + bytes = (ord(randpool.get_bytes(1)) % 32) + 10 + m.add_bytes(randpool.get_bytes(bytes)) + self._send_message(m) + def renegotiate_keys(self): """ Force this session to switch to new keys. Normally this is done @@ -595,7 +613,7 @@ class BaseTransport (threading.Thread): self._log(DEBUG, 'Attempting password auth...') self.auth_password(username, password, event) else: - self._log(DEBUG, 'Attempting password auth...') + self._log(DEBUG, 'Attempting pkey auth...') self.auth_publickey(username, pkey, event) while 1: event.wait(0.1) |