How can someone hack into a Linux server ? Post: 302827659

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Special Forums Cybersecurity How can someone hack into a Linux server ? Post 302827659 by smiff on Sunday 30th of June 2013 07:57:54 AM

06-30-2013

Registered User

Anything open to access is part of the attack surface and can be attacked though whether this allows a successful hack is another matter.

The only way to secure a server is consider attacks and what you can do to prevent them.

In your case, you may have strong passwords, but are you going to know if someone tries your root account 506938 times with a brute force attack until they happen to find your password? Does your version of openssh have any security vulnerabilities that are remotely vulnerable? If you give someone else access, how do you know that they are changing things appropriately and not introducing vulnerabilities?

smiff

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pwmake

PWMAKE(1)						      General Commands Manual							 PWMAKE(1)

NAME

       pwmake - simple tool for generating random relatively easily pronounceable passwords

SYNOPSIS

       pwmake <entropy-bits>

DESCRIPTION

       pwmake  is  a  simple configurable tool for generating random and relatively easily pronounceable passwords. The tool allows you to specify
       the number of entropy bits that are used to generate the password.

       The entropy is pulled from /dev/urandom.

       The minimum number of bits is 56 which is usable for passwords on systems/services where brute force attacks are of very  limited  rate	of
       tries.  The 64 bits should be adequate for applications where the attacker does not have direct access to the password hash file. For situ-
       ations where the attacker might obtain the direct access to the password hash or the password is used as an encryption key 80 to  128  bits
       should be used depending on your level of paranoia.

OPTIONS

       The first and only argument is the number of bits of entropy used to generate the password.

FILES

       /etc/security/pwquality.conf - The configuration file for the libpwquality library.

RETURN CODES

       pwmake returns 0 on success, non zero on error.

SEE ALSO

       pwscore(1), pam_pwquality(8)

AUTHORS

       Tomas Mraz <tmraz@redhat.com>

Red Hat, Inc.							    10 Nov 2011 							 PWMAKE(1)