• How to Block Chat in the Network

    Dear All, I am wrting this mail to you all, to know if any you have been successfull in Blocking Chats on your networks, and if so, then how have you acheived it? Could you please tell me which Ports to Block for MSN, Yahoo, Rediff, ICQ, Skype. I am using a NetAPPs Net Cache C 1300, and I am trying...

    Komlink0 pointsBadges:
  • How to encrypt an .exe file into a .Jpeg file?

    Hello guys. I have a question. I want to know how can we encrypt a .exe file into a .JPEG file? Its like, when we open the image file, the .exe file should run on its own. I know there are some complicated encryption methods but are there any simple methods? Can we do that? Are there any threats to...

    Kalyan20088745 pointsBadges:
  • Security/ Audit Check list for DB2

    Hi, I'm in the process of hardening the DB2 in Linux and I'm looking for a checklist to help me make sure I don't miss anypoint. Since I'm not an expert on DB2 I would like to have a starting point. I'm looking to make sure I don't leave open doors and also I want ot make sure I don't get an Audit...

    Josec990 pointsBadges:
  • Data vs. perimeter vs. network security

    A short time ago, author Wes Noonan wrote some tips for SearchWindowsSecurity.com about deperimeterization. He explained how security is always pitted against business needs, and perimeters have become porous because businesses require traffic from SMTP, HTTP or VPNs to pass through the firewall....

    RobynLorusso230 pointsBadges:
  • AES encyption: More secure than SHA1?

    I know this is more of a curiosity but I wanted to get some expert opinions on this. I recently heard someone recommend stepping up from md5ing (not to SHA1) but to AES encrypting the password, which would use itself as the key. Does anyone have any recommendations on if that would be more or less...

    ITKE54,905 pointsBadges:
  • Shouldn’t a person just RSA-encrypt the entire document?

    After doing some research on Security, I've finally figured out how to verify if an email / document was actually sent by the "sender". Here's the process I've figured out:The sender gives their public RSA key to the recipient.The sender also uses SHA1 to hash the document.Then he uses his private...

    ITKE54,905 pointsBadges:
  • Is there really a security advantage when it comes to spittling a password?

    I've been reading more and more about the LANMAN (LM) hash and I'm having trouble understanding some of the concepts. Is there really any security advantage when it comes to splitting a password, encrypting the two halves separately, and combining the halves to form one hash? Or is it just more of...

    ITKE54,905 pointsBadges:
  • User circumventing security

    We have a rogue user who knows more than she should. She can grant herself and other users the authority to access files that are supposed to be secured. Does anyone know of how we can monitor her activity or go back and review what she has done or anything that we can do. We think she may be using...

    Mouse3330 pointsBadges:
  • RSA: Doing a dictionary attack

    In my understanding of learning "Security", I'm looking to learn more about how RSA works. Here's my basic understanding of RSA:Having the public key allows you to encrypt things. Encrypting the same message "Hello" on two different computers using the same public key will produce the same...

    ITKE54,905 pointsBadges:
  • How secure is Identity-Based encryption?

    Over the past several years, I was always taught to never create my own crypto algorithm. But now I'm looking into Voltage SecureMail (which does use identity-based encryption) and I think I'm way over my head in trying to figure out the quality of the system.If you've used Voltage before, I'm...

    ITKE54,905 pointsBadges:
  • Are our powerline adapters secure?

    Our company is using 2 Zyxel PLA407 powerline adapters. We currently have one router downstairs that's connected to one adapter. The other is located upstairs (currently 30 feet away connected to a desktop). We've recently noticed that the speed is much faster when you just plugin, rather than...

    ITKE54,905 pointsBadges:
  • Security: How does a crypter actually work?

    I'm studying to become a security expert and I've recently come across the idea of a "crypter". I'm talking about how these crypters encrypt files (such as viruses and keyloggers) so they can bypass antivirus detection. But I'm curious on how they actually work. Can someone help me with a brief...

    ITKE54,905 pointsBadges:
  • Why does encryption take longer than decryption?

    Why does it take longer for a system to process encryption than decryption? That seems to be the case from my experience using AES. I would think the act of decrypting files would take much longer.

    ITKE54,905 pointsBadges:
  • Can I use off-the-record style encryption for my emails?

    I'm new to the security world but I know that instant messaging uses "off-the-record" encryption (which means that a user would get authentication, encryption and forward deniability). But for my email, all we use is GPG/PGP, which offers authentication and encryption but doesn't allow forward...

    ITKE54,905 pointsBadges:
  • Encryption: Using a static IV

    A part of our team has had to extend our website to try to communicate user credentials for a suppliers website. We're using a 256-bit key but they're using a static IV for decrypting the information. We've advised them not to use static because it's an a security risk. But we want to know how big...

    ITKE54,905 pointsBadges:
  • Why use 256 bit encryption instead of 128 bit?

    Why is that 256 bit encryption has become so popular? Isn't 128 bit security enough for most applications?

    ITKE54,905 pointsBadges:
  • Intercepting two-factor authentication (SMS)

    I'm trying to learn more about "IT Security" and I've come across two-factor authentication. I understand two-factor authentication mechanisms use SMS to deliver single-use passphrase to the user. But how secure is it? Is it hard to intercept the SMS message containing the passphrase? Do mobile...

    ITKE54,905 pointsBadges:
  • Password encryption: WEP, WPA and WPA2

    I'm pretty much a beginner when it comes to security but I do know that there are pretty much three different methods when it comes to Wi-Fi security: WEP, WPA and WPA2. My question is this: Does one method have better "strength" when it comes password encryption? Or are they pretty much all the...

    ITKE54,905 pointsBadges:
  • How do I find out what type of encryption is being used?

    I am testing a web application which stores the password in the database in an encrypted format. How do I determine what hashing or encryption is being used?

    ITKE54,905 pointsBadges:
  • Would versioning a file make it less secure?

    I'm using KeePassX as a password manager, and I've stored a KDB file in a Sparkleshare folder to back it up / sync with other devices.But just as a question (with the file being encrypted) if someone stole the file, they would several different versions of the file with minor variations. Would that...

    ITKE54,905 pointsBadges:

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