Re: OpenSSH 4.3 Banner Masking

["Nikhil Wagholikar" <visitnikhil () gmail com>]

Hello Bit Bucket,

For masking OpenSSH banner follow these steps:

Step 1: Download the source file of OpenSSH (openssh-<version>.tar.gz)

Step 2: Unpack this source file in a single directory.

Step 3: In this directory, open 'version.h' file for editing.

Step 4: Now change the parameter

#define SSH_VERSION "OpenSSH_4.3"
to
#define SSH_VERSION "Undisclosed"

Step 5: Now compile and install this source code

Step 6: Cross check this, by telneting to port 22

The version number should now be stripped off.

Enjoy !!!

---
Nikhil Wagholikar
Information Security Analyst
NII Consulting
Web: http://www.niiconsulting.com/
Security Products: http://www.niiconsulting.com/products.html



On 27 Feb 2008 20:24:29 -0000, <my_bit_bucket () yahoo com> wrote:
> Is there a way to mask the banner displayed by OpenSSH 4.3 connecting to the service by SSH?  For example, my test 
> system displays "SSH-2.0-OpenSSH_4.3" when I "telnet [hostname] 22".
>
>
> Thanks very much!
>
>
> Regards,
>
> Bit Bucket