<div>
thanks a lot, did that<br />
didnt know it shows him like that
</div>


thanks a lot, did that
didnt know it shows him like that

<div>
<div class="content wysiwyg-content">
Hello!<br />
<br />
On a cisco 2801 i have just one username and this morning i logged in on it and just for fun typed show users<br />
and i got this<br />
<br />
&nbsp; &nbsp; Line &nbsp; &nbsp; &nbsp; User &nbsp; &nbsp; &nbsp; Host(s) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Idle &nbsp; &nbsp; &nbsp; Location<br />
&nbsp;194 vty 0 &nbsp; &nbsp; finance &nbsp; &nbsp;idle &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 00:00:01<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;64.1.26.165.ptr.us.xo.net<br />
<br />
<br />
3 minutes later i saw this<br />
<br />
&nbsp; &nbsp; Line &nbsp; &nbsp; &nbsp; User &nbsp; &nbsp; &nbsp; Host(s) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Idle &nbsp; &nbsp; &nbsp; Location<br />
&nbsp;194 vty 0 &nbsp; &nbsp; educationa idle &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 00:00:01<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;64.1.26.165.ptr.us.xo.net<br />
<br />
<br />
and they keep on changing.<br />
do you know what is that?
</div>
</div>


Hello!

On a cisco 2801 i have just one username and this morning i logged in on it and just for fun typed show users
and i got this

    Line       User       Host(s)              Idle       Location
 194 vty 0     finance    idle                 00:00:01
                                                       64.1.26.165.ptr.us.xo.net


3 minutes later i saw this

    Line       User       Host(s)              Idle       Location
 194 vty 0     educationa idle                 00:00:01
                                                       64.1.26.165.ptr.us.xo.net


and they keep on changing.
do you know what is that?

Security breach???

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.

Security

A vulnerability is a weakness which allows an attacker to reduce a system's information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness, known as the attack surface. Vulnerability management is the cyclical practice of identifying, classifying, remediating, and mitigating vulnerabilities. Other vulnerabilities include security risks, security defects and constructs in programming languages that are difficult to use properly.

Vulnerabilities

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.