GoodTech FTP Server Connection Saturation DoS

The remote host appears to be running GoodTech FTP Server for Windows. It was possible to disable the remote FTP server by connecting to it about 3000 separate times. If the remote server is running from within xinetd, this is a feature and the FTP server should automatically be back in a couple ...

Kerberos Server Spoofed Packet Amplification DoS (PingPong)

The remote host is running a Kerberos server that seems to be vulnerable to a 'ping-pong' attack. When contacted on the UDP port, this service always responds, even to malformed requests. This makes it possible to involve it in a 'ping-pong' attack, in which an attacker spoofs a packet between tw...

Quote of the Day (QOTD) Service Detection

A server listens for TCP connections on TCP port 17. Once a connection is established a short message is sent out the connection and any data received is thrown away. The service closes the connection after sending the quote. Another quote of the day service is defined as a datagram based...

Chargen UDP Service Remote DoS

When contacted, chargen responds with some random characters something like all the characters in the alphabet in a row. When contacted via UDP, it will respond with a single UDP packet. When contacted via TCP, it will continue spewing characters until the client closes the connection. The purpos...

WinGate Telnet Proxy localhost Connection Saturation DoS

The remote Wingate service can be forced to connect to itself continually until it runs out of buffers. When this happens, the telnet proxy service will be disabled. An attacker may block your telnet proxy this way, thus preventing your system from working properly if you need telnet. An attacker...