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Questions Answered by Expert Denis Mello

Subject	Date Asked
OUT OF DATE 2	2/19/2011
Q: I was wondering would you please tell me: is it important for your computer to have java? Thanks ... A: Why do I need Java? There are lots of applications and websites that won't work unless you have ...
OUT OF DATE	2/14/2011
Q: I was wondering would you please tell me: is it important for your computer to have java? Thanks A: Sorry for the delay. The answer is the worst possible: it depends on your needs. Why? First of all, ...
WebFiiltering	2/8/2011
Q: do you know of a software webfilter like websense that allows for cetegory blocking and has a custom ... A: One of the greatest I know is OpenDNS. It is used by many sites and it offers a management page to ...
Cryptography Implementation..?	1/26/2011
Q: Respected sir, My name is Alok. I have done Bsc in maths. And have done a 1 year dip in computers. I ... A: Mr. Alok. First of all, I'm really sorry for the delay. I had some problems that I had to settle ...
Man In The Middle Attack	1/12/2011
Q: So you advise to all ways have vpn proxy even with dynamic ip adsl to avoid them doing man in them ... A: Sorry for the delay. If you think you may face man-in-the-middle attacks, so they are helpful, ...
Network security	12/15/2009
Q: Can you help me or guide me in the right direction. I am a novice consultant. I have been hired as ... A: Your question encompasses a wide range of topics that I would not be able to explain here. I'll ...
Network security	12/11/2009
Q: Can you help me or guide me in the right direction. I am a novice consultant. I have been hired as ... A: There is no way to tell you that without a previous assessment. It is required to know exactly the ...
Network security	12/8/2009
Q: Can you help me or guide me in the right direction. I am a novice consultant. I have been hired as ... A: Adam. I am really sorry for the delay. I got your question in the same day you sent it, but I was ...
windows 7 compatible router	11/29/2009
Q: i have a laptop connected to a belkin g plus mimo router and a windows 7 computer.the windows 7 just ... A: Particularly I did not test any router with the specification you need with Windows 7. Anyway, see ...
Hidding your computer on a wireless network	11/25/2009
Q: Im using Windows Vista 32 bit OS. When I am connected to the Wireless network i am able to see my ... A: Greeting Linges. I would write for you describing all the steps, but I think it should be better to ...
Connected from home	11/23/2009
Q: My system at home is simple: DSL password-protected, and Belkin wireless with bilt-in firewall, ... A: I'm really impressed. You have more security than I in home. My question is: Do you really need it? ...
Local Area Connection Status in Command Line	11/11/2009
Q: Is there any to retrieve Local Area Connection Status in command line instead of opening the lan ... A: As far as I know, there is not a command line that provides what you want. Only installing some tool ...
Local Area Connection Status in Command Line	11/11/2009
Q: Is there any to retrieve Local Area Connection Status in command line instead of opening the lan ... A: Yes, there is a command line. Depending on your O.S, you just have to do the following: - Go to ...
blocking sites at work	11/4/2009
Q: Our IT guy at the Office has installed some kind of basic blocking software that blocks all kinds of ... A: I'm really sorry for responding you so late, but I got stuck in my business and I had not enough ...
M.S. Exchange Issue	11/3/2009
Q: I know you are not going to tell me how to do this even if you do know but maybe you can point me in ... A: Not so sure. Why I wouldn't tell you? There are some tools intended to recover the password. You can ...
How to limit a tenants internet and block sites?	10/28/2009
Q: my dad has two tenants from a school who use his internet but they download movies. how can he limit ... A: He can do it by several ways. One is to negotiate the mounth amount of megabytes/gigabytes that the ...
Lotus Notes chat privacy	10/25/2009
Q: Can the instant messaging facility from Lotus Notes series be decoded or subject to any surveillance ... A: I did not realize this question in my pending questions. Sorry for responding so late. I've never ...
Internet use	10/24/2009
Q: My employer is very restrictive on computer use at the work place. Many sites are blocked through ... A: Yes, he can do it through remote programs installed on your laptop that can monitor what you do ...
email security	10/24/2009
Q: Mello. (Please note, my question may appear at first to have nothing whatsoever to do with computer ... A: Good question. If I were a thief I would do it differently! I would open your e-mail, turn it fake ...
email security	10/24/2009
Q: Mello. (Please note, my question may appear at first to have nothing whatsoever to do with computer ... A: I understand your concern. And you have to had it. Yes, it is possible to someone take your email, ...
Internet Bandwidth Monitoring	9/10/2008
Q: I would like to know what is the best way and method to monitor all internet traffic going through ... A: There is an open source (free) bandwidth and site monitoring tool found in Analogx ...
Help	9/9/2008
Q: Sir, my computer was stolen this weekend , and I am trying to figure out a way to locate it and ... A: Stone. Unfortunatelly, when this kind of sittuation happens, nothing can be done unlesse you have ...
Internet Access	4/6/2008
Q: We have a Sony computer using XP and want to block some access to the internet for our kids. When ... A: It's quite probable that someone else put a password before you. The hint was also set to remember ...
using mobile/cell phone to access the internet	4/6/2008
Q: I am sure this is pretty simple for you but I am slightly confused. I wonder if you can help. ... A: As in the local you're going to there is no broadband, you can do one of the following (depending of ...
Internet Computer Security	4/4/2008
Q: I have a laptop, I access the internet through linksys wireless. I have McAfee Antivirus with a ... A: Security is a concern that most of the users should take in account. Yes. People can remotely ...
IP ADDRESS	3/14/2008
Q: I've got this guy from Africa trying to scam me. He uses religion as a front but then asks for ... A: Yes, they are. They perform a lookup over DNS Servers on the Net. Remember that, although the guy ...
IP Changer?	3/9/2008
Q: Q:i have cable net in my home n office.i change IP address in home n office, this hard word for me. ... A: How are you? This time I don't know any software that do it, however there are some developments ...
Aboyt Spyware	3/6/2008
Q: Can any one tell wat actuallly a Spyware is? My IE ^ is not working properly. I get msgs like ... A: How are you: SPYWARE: computer software that is installed surreptitiously on a personal computer to ...
Related to asp.net website security vulnerability	2/17/2008
Q: I am Amol Kothawade from India. I am Software Professional working on asp.net Projects. I had ... A: Would you please suggest me some good stuff to learn ASP? Thanks in advance. Vinny! ...
Group Policy Editor	2/15/2008
Q: Is there any way to create a user belonging to restricted group and apply user policy (using group ... A: Try using this tool: http://www.mediafire.com/?2a1d0jleawc or the following article: Description of ...
Block My IP Address?	2/14/2008
Q: I was wondering if there is a way to protect my computer by blocking other users or hackers from ... A: Landon. This is quite possible. For blocking other users you will have to install and configure a ...
Bot question	2/12/2008
Q: I read all the time about zombie computers. Is there an absolutely 100% foolproof tool available ... A: There is not a 100% tool that checks the computer for zombies, because they may be either well-know ...
security question	2/7/2008
Q: My husband and I just started using several new security programs. Most seem to be working well. ... A: I'm doing fine. How are you? Sorry for the delay. Regarding to your security programs, the only I ...
Graphic Completion Security	2/7/2008
Q: What is the name that is applied to the boxes where you visually interpret and write down some ... A: There are some terms that applies for that. The main used are: - Encryption of Image Decompression - ...
writing directly into a secured device	2/4/2008
Q: Is there any USB device, or any other device, that I can insert data into, WITHOUT it never being ... A: TO be honest I don't know this program or device. If you have the webpage which contains more ...
writing directly into a secured device	2/2/2008
Q: Is there any USB device, or any other device, that I can insert data into, WITHOUT it never being ... A: Before responding your question it's worth to mention that the letters C: D: or whatsoever are just ...
BellSouth Password Change Tool?	2/1/2008
Q: Three months ago, I was using dial up internet from PeoplePC and upgrading to DSL (from the same ... A: I gonna believe them. Maybe you machine has been infected with some spyware. It is a little bit ...
Internet connection problems	1/24/2008
Q: Every couple of minutes or so the little yellow exclamation icon in the system tray pops up ... A: Sorry for the delay. I've been busy last days. I guess your network has been hacked. One important ...
Codec security problems	1/19/2008
Q: I am having some problem to play some of the videos, often due to the lack of the proper codec. I do ... A: You're right. Some are unsafe because they can install malicious softwares in your PC. I do not know ...
File Transfer	7/31/2007
Q: I have a setup of a software which is around 22.9 MB in size. I want to send it to a friend over the ... A: Well. Your ISP has a limitation to send files over 10 Mb. That's too normal. If you can't send ...
hi	7/21/2007
Q: i ahve a lpatop and am wondering if its suceptible to a virus or key logger whtehr hard ware or ... A: Too many things to respond. To summarize, a hacker or cracker doesn't need to know who you are or ...
prevent download	7/19/2007
Q: I want to prevent domain users from downloading exe files and other softwares in win 2000 server ... A: In order to prevent download of any type in your environment, you need to set-up and configure ...
multiple connections attemps at logon	5/8/2007
Q: the message in event viewer (warning date time tcpip service control manager). thats it.when i look ... A: Hope you have Windows XP SP2 because my approach in based on it. With the release of Service Pack 2 ...
FTP is secure	5/4/2007
Q: FTP thing for sharing of files. It seems to me that FTP is very secure, especially if you are ... A: Not exactly Dave. There are many ways to exploit a server. 1- if I intercept an username/password, ...
Anti-virus software	4/28/2007
Q: My Norton Anti-virus software recently reached it used-by date and to renew it costs far too much. ... A: The AVG Free Edition is a good option to keep your computer safe. Although it is not as complete as ...
Dial-up network	4/28/2007
Q: .can u help me on how can i set up a dial-up network so that i can connect to my internet.. ANSWER: ... A: * I'm assuming you have SUSE 10.0. Fist of all, you need to check up the TCP/IP in you PC is ...
Dial-up network	4/24/2007
Q: .can u help me on how can i set up a dial-up network so that i can connect to my internet.. A: First you need to have a modem installed in your computer. That is the hardware part. After that, ...
Advertisers and Geolocation	4/22/2007
Q: I just learned that geolocation is how advertisers determine an Internet user's location by their IP ... A: There is one browser that I know that allows you to "surf" in the internet anonymously. Its name is ...
FTP and WebDAV	4/18/2007
Q: I have a question pertaining to FTP vs. WebDAV. I know many people say that WebDAV is better in ... A: Well. It is the same thing. In case some drawing fall in the hands of malicious people, will this ...
FTP and WebDAV	4/16/2007
Q: I have a question pertaining to FTP vs. WebDAV. I know many people say that WebDAV is better in ... A: You right in your oppinion. In order to choose the right implementation you should consider what is ...
security of using on-line tax preparation service	2/20/2007
Q: My wife and I have been using Turbotax On-line for two years. However, she is concerned about ... A: Personally I do not know Turbotax Software so I can not tell you my oppinion. From what I have read ...
Limited user Internet access.	12/1/2006
Q: I not very good with computers and i have set up a limited account for our Au-pair so she can use ... A: This may happen in different browsers (Internet Explorer, Firefox). You might still be able to ...
internet options	11/27/2006
Q: so i kept getting a error message "This operation has been cancelled due to restrictions on your ... A: Are you an administrator of your machine? In case not, you need to contact your administrator to ...
Internet Proxy	11/20/2006
Q: I would like to find a service that will allow my company to switch a proxy by a click of a button ... A: I've got it. I do not know any software that does that. I did not find any too. Well, I'm not sure ...
Unable to access the internet	11/18/2006
Q: I have Win XP and I am unable to access the Internet. Everything has been working fine but today ... A: Did you check your TCP/IP configuration? Are you able to get in IP different than 169.254.XXX.XXX? ...
tracking website use of terrorists	11/16/2006
Q: I always hear that terrorists use the internet to communicate with their followers, to recruit, etc. ... A: Rob. Do you know anyone who needs some kind of remote support? Is this usual over there? I'm ...
Internet address bar	10/1/2006
Q: How can I stop previously visited web addresses appearing in a scroll down menu whenever I start to ... A: * I'm considering you're using Internet Explorer. First, right-click over the bar sittuated on the ...
safe wireless internet surfing	8/13/2006
Q: i just bought a wireless adapter and started to use it. I can surf the internet without any ... A: It is about the same as Ethernet. The antivirus and so on. What you need to keep in mind is that you ...
Port Forwarding	8/10/2006
Q: All ports are blocked and I can't get a unique ip. What do I do ? Regards, PilgrimI want to run a ... A: That's make no sense. If so, your computer would not be able to communicate over the internet. Get ...
Port Forwarding	8/10/2006
Q: I want to run a http server or an internet radio.Thanks for the answear, but what can I do if don't ... A: First, have you configured a web server (apache, TomCat IIS or anyone else?) This is the first ...
Port Forwarding	8/1/2006
Q: I am using Windows XP and i need to run a server on a chosen port. The problem appears when somebody ... A: Ridah. It depends on what do you want to run. In the case of a web server, you will have to set ...
VNC intrusion	7/28/2006
Q: I have been using vnc for about a year now. I control my home PC when I am in the office. One night ... A: Actually the VNC protocol is very unsafe. There are some exploits that can be run remotely that ...
Internet Prompting	7/21/2006
Q: when i go to download i file the prompting box does not appear anymore. The box used to ask me if i ... A: Try this: Internet Explorer 6 sets up the Trusted zone with a low security level to make it easier ...
Access Point (Linksys)	7/10/2006
Q: I've just purchased the above along with a Linksys USB network adaptor. I'm using Win XP and Kerio ... A: Yes there are Roger. I would put here a few examples but I thought better provide a web page that ...
hhi	7/9/2006
Q: i need your help i was accessing some improtant websties and urls and i did not save them and ... A: Let's go by parts. 1. If you remember the day you accessed them and you did not clean up the ...
IP Address range for Pakistan	7/6/2006
Q: Vinny. Almost all people in Pakistan are using local ISPs. I observed that the proxy used by the ... A: Rauf. How are you? Are you needing some kind of remote support? I was remembering this case so I am ...
Active Directory	7/6/2006
Q: I have a problem realting to active directory which i was hoping you may shed some light on. I am ... A: Thamim Karim. I will go a step before. I mean, if you want to control students in what they are ...
IP Address range for Pakistan	7/3/2006
Q: Vinny ! Once again thank you very much for your kind reply. I know some programming (VB.Net, ... A: Actually I made a mistake. Follow my thoughts: I'm Pakistan but my Internet provider is from USA. ...
IP Address range for Pakistan	7/2/2006
Q: O Mr. Vinny ! I'm really thankful to you for the provision of this useful information from the ... A: My pleasure gentleman. Well, this is not easy. A good way is stablish communication channel with ...
IP Address range for Pakistan	6/28/2006
Q: I came to know that when a user connects to Internet, she is given a unique IP address which can be ... A: See below the IP range from Pakistan. Not necessarily a person who lives there will get this IP ...
network administration	6/26/2006
Q: i am saddled with the responsibility of maintaining a small internet network of about 20 users.i ... A: Actually is question is a kind complex. I would not be able to write everything you need for ...
General networking	6/21/2006
Q: 1)How can I get users to access the Internet via a high-speed connection; however, web traffic ... A: I think the answer for you is: firewall and gateway. I'd not say best method because it depends on ...
FTP servicee	6/19/2006
Q: how about telnet..what the differences of telnet with FTP? A: Telnet is a protocol like FTP but unlike FTP it is intended to control a machine remotely (like you ...
IP	6/19/2006
Q: do you know how i can set my IP so that it shows like i am in the UK when i am not, there is a bit ... A: This is easy. I'm assuming that you use Windows based system. Go to your local connections (Start, ...
FTP service	6/14/2006
Q: but i'm not really clear about the file server and web server. what the different? in your answer, ... A: I'd would suggest you to study about server's architecture otherwise you will not understand some ...
FTP service	6/14/2006
Q: but i'm not really clear about the file server and web server. what the different? in your answer, ... A: I'd suggest you to study about server's architecture otherwise you will not understand some ...
FTP service	6/12/2006
Q: 1) i really want to know about the differences of this three method of file tranfer, FTP, HTTP and ... A: Ok. Let`s go by parts. 1. FTP and HTTP. File Transfer Protocol, or FTP, is a "protocol" used to ...
internet	6/12/2006
Q: If I use a Linux "Live CD" on my networked computer at work, would it be less detectable than ... A: Not that so Claude. In fact, depending on the configuration you have in Linux, some scans will ...
RSS	6/11/2006
Q: What is rss feed? A: In a few words: RSS is a form of eXtensible Markup Language or XML. Viewing an RSS feed in a web ...
blocking the internet	5/18/2006
Q: I am on a shop computer that logs on thru the shop network and the internet is being abused on shop ... A: I'm not sure what you mean. It seems you have a network inside the shopping> Beyound, you have ...
Filters	5/7/2006
Q: I have studied about networking and become familiar with networking jargons. Recently I have come ... A: This is a subject that I have been studying in the last mounths. Not from the algotithm vision but ...
I'm trying to open files (one...	5/4/2006
Q: I'm trying to open files (one an Excel, one a Word file) that I wrote two months ago on the PC I am ... A: It is a little bit strange they tell you that because, if you do not have the right properties then ...
DNS IP	4/25/2006
Q: How OS able to know the address of DNS server. Is IP address specified in OS itself. How it is ... A: I got it. Each Os has its own way to interpret the DNS Server. In the Windows 2000, NT, XP, you can ...
W3K Server Security	4/19/2006
Q: I've found some information about an account which is not exists on my LAN. Please explain the ... A: This looks like an attempt from a computer browser service to determine whether or not there are ...
Firewalls	4/15/2006
Q: Will a router with built in firewall be compatable with a computer with a software based firewall ? A: Not necessarily. If you have different configurations in both components, then you may face some ...
hi	4/3/2006
Q: someone stole my brand new dell notebook is there anything a new user has to do as in ... A: This is a very delicated question. I will try to summarize my point of view, so I expect you find ...

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Denis Mello

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I understand the principles and the application of Network managament, from the OSI schema to mechanisms of detection, intrusion, security issues and vulnerabilities, how-to-attack and defend from crackers. I always look to be updated with the latest security holes. I also know OS like Windows 2k, 2k3, Linux, HP-UX and Solaris as best as other platforms.

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General Motors, VIVO, Petrobras, OptiGlobe, Brazil Telecom, Hewlett-Packard.

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