Strange commands frequently received
Posted: 2021-04-05 23:14
Could some guru teach me on this strange commands, which I receive frequently for recent months.
I would like to know whether this is a sort of attack, or just a behavior of a browser.
The log of Filezilla server is this:
> Connected on port 21, sending welcome message...
> 220 Welcome to the Tak's FTP service. Connection successful.
> ...
> 500 Syntax error, command unrecognized.
> ュ.
> 500 Syntax error, command unrecognized.
>
> disconnected.
The first command is substituted but it is actually Hex 16 03 03 0D 0A, and the second one is EF BD AD 01 0D 0A.
Thanks in advance
Tak
I would like to know whether this is a sort of attack, or just a behavior of a browser.
The log of Filezilla server is this:
> Connected on port 21, sending welcome message...
> 220 Welcome to the Tak's FTP service. Connection successful.
> ...
> 500 Syntax error, command unrecognized.
> ュ.
> 500 Syntax error, command unrecognized.
>
> disconnected.
The first command is substituted but it is actually Hex 16 03 03 0D 0A, and the second one is EF BD AD 01 0D 0A.
Thanks in advance
Tak