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Home Archive by category "Networking"

Category: Networking

Funny Story: To DoS or DDoS? … that is the question.

I recently received an invitation to attend a seminar in “How to protect your business from DDoS attacks” the invitation was sent via an HTML attachment. So, in my paranoia I opened the file in an editor before trying to load it in a browser.  While in the editor view …

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Jose Quinones May 26, 2016 May 26, 2016Networking, Security, Windows

Ping with creativity … on windows

Recently saw a blog post on netstat , so I tough that if someone could blog about netstat I can blog about ping.  #insidejoke First of all,  ping is a windows/unix command used to check connectivity between to points using ICMP protocol, but that’s not all you can do with …

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Jose Quinones May 12, 2016 May 12, 2016Networking, Security, Windows

Pivoting Networks Presentation

Recently I went to the Computer Sciences Department of the University of PR – Rio Piedras Campus and had a great time with the students talking about pivoting networks. I decided to share it with you … hope you enjoy it.

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Jose Quinones September 11, 2013 October 1, 2013Linux, Networking, Security, Sysadmins, Windows

BYOD: Bring your own Darkside … about my setup

Recently I presented at an ISSA meeting and some people wanted to know about my setup. Well; here it is:

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Jose Quinones June 30, 2013 August 31, 2013Init6 Security Group, Linux, Networking, Security, Sysadmins

Testing your mail server for impersonation or relay attacks.

Recently a friend ask me how does he knows if his mail server is vulnerable to impersonation or relay attacks. (SPAM, Phishing, etc) First we have to think why these attacks happen. For one thing there is no authentication/authorization on the SMTP connections between servers and mostly misconfiguration. Sometime we …

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Jose Quinones July 12, 2012 September 26, 2012Networking, Security

Finding what you need with nslookup

Hello all, I was just thinking if I was doing recon with a Windows machine and had a limitation of just using built-in tools, how would I do DNS interrogation?

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Jose Quinones May 19, 2012 April 26, 2018Networking, Security, Windows
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    • TalktoanIT Jose Arroyo’s personal IT development site
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    • Obsidis Consortia OC, Inc. is a non-profit organization committed to Information Security Education, Awareness and Professional Development in Puerto Rico
    • Security BSides Wiki BSides PR, Wiki @ SecurityBsides.org
    • ISSA Puerto Rico Pagina oficial del capitulo de ISSA para Puerto Rico
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