How can someone hack into a Linux server ? Post: 302827661

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Special Forums Cybersecurity How can someone hack into a Linux server ? Post 302827661 by ParanoiaUser on Sunday 30th of June 2013 09:04:02 AM

06-30-2013

Registered User

I am considering attacks, actually i have proof of them and that's why i am posting here, trying to find out how they can get in other than SSH and FTP.

I do regular updates of my server so as far as i know everything is patched, should be no vulnerabilities,also,no one else has access to the server.

To brute-force my root account 506938 times they will need 253469 IP's cause they get permanently banned after 2 failed login attempts, but even if they did, my password is over 30 randomly generated characters long including upper + lower case letters, numbers, symbols and brackets.

For comparison a 10 char password with upper + lower case letters and numbers has a bit over 107 Billion combinations so i wish them good luck if they try to brute-force their way in lol.

Thats why i've posted here though to find out other ways they can get in other than SSH or FTP login so i can take measures to stop them or reduce their chances of success.

Last edited by DukeNuke2; 06-30-2013 at 10:20 AM..

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LEARN ABOUT XFREE86

ftpconfig

ftpconfig(1M)						  System Administration Commands					     ftpconfig(1M)

NAME

       ftpconfig - set up anonymous FTP

SYNOPSIS

       ftpconfig [ftpdir]

       ftpconfig -d ftpdir

DESCRIPTION

       The ftpconfig script is executed by the super user to set up anonymous FTP. Anonymous FTP allows users to remotely log on to the FTP server
       by specifying the user name  ftp or anonymous and the user's email  address as password. The anonymous users  are  logged  on  to  the  FTP
       Server  and  given  access to a restricted file area with its own file system root. See chroot(2). The FTP area has  its own minimal system
       files.

       This command will copy and set up all the components needed to operate an anonymous FTP server, including creating the  ftp  user  account,
       creating  device  nodes,  copying  /usr/lib files, and copying timezone data.  The passwd and group files set up have been stripped down to
       prevent malicious users from finding login names on the server.	The anonymous file area will be placed	under  ftpdir.	If  the  ftp  user
       account already exists, then the current FTP area is used, and the system files in it are updated. All other files are left untouched. This
       command should be run to update the anonymous FTP area's configuration whenever a system patch is installed, or the system is upgraded.

OPTIONS

       -d	Create a new or update an existing ftpdir without creating or updating the ftp user account. Use this option when  creating  guest
		FTP user accounts.

OPERANDS

       The following operands are supported:

       ftpdir	The absolute pathname of the directory under which the anonymous FTP area is set up.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion

       1	Improper usage of the command

       2	Command failed

ATTRIBUTES

       See attributes(5)  for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWftpu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ftpaddhost(1M), in.ftpd(1M), useradd(1M), chroot(2), attributes(5)

SunOS 5.10							    1 May 2003							     ftpconfig(1M)