The Hidden Security Risks of P2P Traffic

For years enterprises have been trying to control peer-to-peer (P2P) technologies inside their networks, and for good reason. The efficiency with which P2P technology move large files have made P2P networks key enablers of the Internet grey market by acting as the distribution mechanism of choice for pirated movies, music or applications…read more at ThreatPostThe Hidden Security Risks of P2P Traffic.

Network Access Denied error when reaching a share you once had access to

If you share a folder, you should only give permission to users who need access.

Never share a folder to Everyone.

But let’s say, that you once had access to a folder or a device such as a shared printer and now when you travel across your network, you get an ‘Access Denied’ error.   You were prompted for the username and password when you first logged in but you changed it or it was changed by someone else.

(Of course the first thing you should do is check permissions on the device if you can. )

Second, if you remembered the login credentials,  you may need to delete the credentials in order to receive a prompt from the device so you can enter the new username or password.  So how do you remove remembered credentials?

  • On Windows 7, click on the orb and type Credential Manager.  You’ll see the Credential Manager in your list.  Click on it.   Select the device you are logging into and either delete it or change the password to the correct password.

You can backup your vault with its saved passwords and information.  You must store this info in a safe place.   You will be prompted to hit CTRL-ALT-DEL prior to finishing the backup and you will be asked for a password to protect the backup.

Dibbler can help small businesses with IPv6

What is Dibbler?  “Dibbler is a portable DHCPv6 implementation. Is supports stateful (i.e. IPv6 address granting) as well as stateless (i.e. option granting) autoconfiguration for IPv6. Linux 2.4/2.6/3.0, Windows XP/2003/Vista/Win7 (experimental for NT4/2000), Mac OS X, FreeBSD, NetBSD and OpenBSD.” Sourceforge

How can it help?  If you have a non compliant IPv6 router or operate in a small business environment.

Where can I get it?  Sourceforge – Read the documentation before implementing this software on any network.


Testing IPv6 Teredo – A comprehensive list

Instead of trying to impress everyone with bits, bytes and binary, we’re trying to put these tips in layman terms for young IT professionals (quick start guides).

If you have installed your Teredo drivers and IPv6, you should receive a 2001: IP address on your Tunnel adapter if you do an ipconfig at a command prompt.   You can assign your self an ipv6 address based on this scheme if you are behind a router (home wireless or other) That is not IPv6 compliant.  How?

Teredo is a protocol that works behind NATed devices – (by the way, NAT is going away…yes going away.  Stateful firewalls and the security of IPv6 won’t require NAT anymore after you are 100% compliant)

It breaks down like this.  Your router gives you an IPv4 address with its DHCP server.  The IPv6 address you want is an  IP address a 128 bit address instead of 32 bits.   To see newer IPv6 websites, you’ll need Teredo to get you there (both IPv4 and IPv6).   So how does an IPv6 address break down?

Prefix     –    Teredo Server IPv4     –    Flags      –    UDP Port        –   Your IP address(Teredo Client)
2001:0:           4136:e378:                       63bf:              8000:                     c0a8:0405   <- is (Example)

So the first part doesn’t change (Prefix/Teredo Server/Flags/UDP Port) but where do you get the Teredo Client address?

You can take your ip address (IPv4) and put it into a conversion utility and  after the conversion, you but the hex number  to where the Teredo Client goes (above).

Is it working after you put it (The ip address)  into your network adapter statically?

Note:You won’t need a gateway or DNS in the IPv6 section – however you will need an IPv6 DNS server address that has an IPv4 numbering scheme to put in your router? test your 4, 6 or both

 runs a comprehensive test where you can see results of test

   checks for IPv6 Connection Test Speed Test Ping Test PMUTD  (Determines possible MTU problems)


Wireshark IPv6 picture load from IPv4 and IPv6

Test your IPv6 speed to Japan

Global Eye Candy Chart

Arin’s wiki page on IPv6 Troubleshooting

Feel free to use Twitter, Facebook or the links below if this has helped you!   Please leave comments and suggestions that will help home users or businesses.

Pssst…need more help?