Bitcoin Forum
May 28, 2024, 12:57:57 PM *
News: Latest Bitcoin Core release: 27.0 [Torrent]
 
  Home Help Search Login Register More  
  Show Posts
Pages: « 1 2 [3] 4 5 6 7 8 »
41  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 27, 2013, 04:04:56 PM
Append the Sec-Coin Wallet Address To The Name Of The Node
Name the sever nodes on the network with their corresponding sec-coin wallet address appended so that users and end-user clients can view the sec-coin blockchain to verify that the server performing the transaction actually has sec-coins and enough of them to perform the task. If a rogue server-node spoofs a sec-coin wallet address and attempts to perform a transaction on the p2p network, the transaction will be denied because the rogue node doesn't have any or enough sec-coins to complete the transaction.  Verify the transaction afterward by examining the sec-coin blockchain to see if the balance has changed.  If the balance is still the same then you know a rouge server was spoofing a valid servers wallet address.  When the transaction confirmation comes back to you, deny the confirmation.  If you know that a sec-coin transaction costs five sec-coins and the balance has changed by four; again, deny the transaction confirmation when it arrives.





(I AM GOING TO TAKE A BREAK... BE BACK LATER)
42  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 27, 2013, 03:47:42 PM
Hey, can I get some feedback.  What do you think about alt-security-coins?  What should I call them?

1. Secoins
2.Seccoins
3. Sec-coins
4. s-coins
5.Huh
43  Bitcoin / Project Development / Re: [ANN] P2P Decentralized Orderbook on: May 27, 2013, 03:34:46 PM
I have made some new Updates. I also introduce a new concept called security-coins to be used in place of acls and digital certificates.

https://bitcointalk.org/index.php?topic=209269.0

If you are reading this or printing this out then you might want to re-read or re-print this thread. I have made changes to the configuration and security practices. Most of the changes are on from the Disposable Wallet Section.


ALT-COIN SECURITY

USE WORTHLESS ALT COINS TO DO TRANSACTION VERIFICATION BETWEEN NODES.

All of these new alt coins being created everyday are not necessarily a bad thing. Crypto-coins and their corresponding blockchains can be used for other things besides money. Like securing transactions between P2P nodes. You can use worthless alt coins as transaction verifiers throughout the entire p2p network; and its more secure than using CA certs, pre-shared keys, or other more complicated security setups.

For high security, don't use other alt coins. Make your own customized coin for the same purpose. You don't have to worry about double spend attacks because you are only using it for the purpose of securing transactions for the p2p network and you are the only one with access to the coin. Make a coin that is fast and can be mined easily. Afterward, pre-mine it with enough coins to support the entire network. You wont have to worry about it retaining a monetary value because its pre-mined. Don't give any coins out to anyone except server admins. It show the people that a server admin is validated because no one should have the coins except for server admins.


The good thing about alt-coin security is that no one will have your coin except you. As long as none of the admins don't send their coins to other people. If they do you can find out by doing an blockchain analysis. If no one has your coins except for you then that makes it much harder for a hacker to compromise the p2p network integrity.


Security-Coin Validation
Use the blockchain to verify where the coins came from. If a server node sent you security-coins from a wallet address of ABCDEFG1234567 to validate a specific transaction you can verify the where the coins came from by doing a blockchain analysis. The analysis will show where the coins came from. If the coins came from an address that you do not know or is not listed in the security list you know not to perform the said transaction. It that simple. No ACLs, no certs, no keys, just alt-security-coins.

High Level Security-Coins
For sensitive servers such as high level wallet-bots use a different security-coin than that which is used by the rest of the network. Only give it out to server admins that are high level. This provides an additional layer of security within the p2p network.

Keep track of every coin
The head of the p2p network can disburse security-coins to the server admins for transaction verifications and tolls on the network.  As the security-coins travel from the server admins to other nodes, you can make nodes to collect the security-coins and bring them back to you. A security-coin audit can show if any security-coins were lost and where they went and who lost them. This provides better security than other methods; in addition, if a server admin and his nodes are booted or fired from the p2p network you can blacklist his wallet address or refuse to give him more security-coins to perform transactions and pay tolls on the network.

Transaction Tolls
Transaction Tolls provide a way to control and maintain the p2p network. Certain nodes require certain security-coins and a specific amount. For example, a high level transaction involving a large sum of money might require a large amount of security-coins before the transaction will take place. Only admins with that amount of security-coins will be able to perform the said transaction.

Security-Coin Dual Wallet Application
I recommend coding a dual-wallet application for the wallet-bots. Code the wallet application so that the Bitcoin/Litecoin wallet will not send cryptocurrency to anyone unless there is a sufficient amount of security-coins to perform the said transaction. You can hard code the security-coin amounts based on how much cryptocurrency is sent. This would make it much harder for a hacker to get the bot to send coins to an illegal wallet address.

 






(I AM WRITING THIS AS YOU READ IT...   CLICK REFRESH TO UPDATE THE PAGE)
44  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 27, 2013, 02:22:36 PM
If you are reading this or printing this out then you might want to re-read or re-print this thread. I have made changes to the configuration and security practices. Most of the changes are on from the Disposable Wallet Section.


ALT-COIN SECURITY

USE WORTHLESS ALT COINS TO DO TRANSACTION VERIFICATION BETWEEN NODES.

All of these new alt coins being created everyday are not necessarily a bad thing. Crypto-coins and their corresponding blockchains can be used for other things besides money. Like securing transactions between P2P nodes. You can use worthless alt coins as transaction verifiers throughout the entire p2p network; and its more secure than using CA certs, pre-shared keys, or other more complicated security setups.

For high security, don't use other alt coins. Make your own customized alt coin for the same purpose. You don't have to worry about double spend attacks because you are only using it for the purpose of securing transactions for the p2p network and you are the only one with access to the coin. Make a coin that is fast and can be mined easily. Afterward, pre-mine it to the hard-limit with enough coins to support the entire network. You wont have to worry about it retaining a monetary value because its pre-mined. Don't give any coins out to anyone except server admins. It shows the users on the exchange that a server admin is validated because no one should have the coins except for server admins.


The good thing about alt-coin security is that no one will have your coin except you. As long as none of the admins don't send their coins to other people. If they do you can find out by doing an blockchain analysis. If no one has your coins except for you then that makes it much harder for a hacker to compromise the p2p network integrity.


Security-Coin Validation
Use the blockchain to verify where the security-coins came from. If a server node sent you security-coins from a wallet address of ABCDEFG1234567 to validate a specific transaction you can verify where the security-coins came from by doing a blockchain analysis. The analysis will show where the security-coins came from. If the security-coins came from an address that you do not know or is not listed in the security list you know not to perform the said transaction. It that simple. No ACLs, no certs, no keys, just alt-security-coins.

High Level Security-Coins
For sensitive servers such as high level wallet-bots use a different security-coin than that which is used by the rest of the network. Only give it out to server admins that are high level. This provides an additional layer of security within the p2p network.

Keep Track Of Every Coin
The head of the p2p network can disburse security-coins to the server admins for transaction verifications and tolls on the network.  As the security-coins travel from the server admins to other nodes, you can make nodes to collect the security-coins and bring them back to you. A security-coin audit can show if any security-coins were lost and where they went and who lost them. This provides better security than other methods; in addition, if a server admin and his nodes are booted or fired from the p2p network you can blacklist his wallet address or refuse to give him more security-coins to perform transactions and pay tolls on the network.

Transaction Tolls
Transaction Tolls provide a way to control and maintain the p2p network. Certain nodes require certain security-coins and a specific amount. For example, a high level transaction involving a large sum of money might require a larger amount of security-coins before the transaction will take place. Only admins with that amount of security-coins will be able to perform the said transaction.

Security-Coin Dual Wallet Application
I recommend coding a dual-wallet application for the wallet-bots. Code the wallet application so that the Bitcoin/Litecoin wallet will not send cryptocurrency to anyone unless there is a sufficient amount of security-coins to perform the said transaction. You can hard code the security-coin amounts based on how much cryptocurrency is sent. This would make it much harder for a hacker to get the bot to send coins to an illegal wallet address.

 






45  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 11:02:15 PM
Tomorrow I will show how home-virtual-servers can use a consensus to call forth a wallet-bot to perform a transaction.

Thanks for everyone's support.
46  Bitcoin / Bitcoin Discussion / New Type of Disposable Wallet Stops Rogue Admins From Stealing Wallet.dat files on: May 26, 2013, 10:53:24 PM
I have made a new type of security wallet method that prevents rogue admins from stealing wallet.dat files on a p2p server exchanage.

Read about it here (last page):

https://bitcointalk.org/index.php?topic=209269.0
47  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 09:41:09 PM
Wallet-virtual-servers - AKA wallet-bots

A wallet-virtual-server just has one purpose. That purpose is to:
 
1. To retrieve the wallet private key segments, assemble them, then import the whole private key into the Bitcoin/Litecoin client.
2. Conduct the transaction.
3. Generate a new disposable wallet.
4. Transfer any leftover change from the previous transaction to the new disposable wallet address (This will be an non-redeemed transaction in the blockchain).
6. Discard the old disposable wallet.
5. Redistribute the new disposable wallet private key segments among the home-virtual-servers in the p2p network.
6. wipe memory / reboot / whatever is necessary to forget the newly generated key.

Now wallet-bots have rules:

1. Wallet-bots cannot store any information.
2. Wallet-bots cannot retrieve key segments on its own.
3. Wallet-bots cannot retrieve the same key segments that it has disbursed to the p2p network.
4. Wallet-bots are designed to work in groups. A $25,000 USD transfer transaction would require 25 wallet-bots with each bot handling one transaction of $1000 USD.

Quote
Note: A rogue wallet-bot can be mitigated by setting a TTL (Time To Live) on the disposable wallet. This is set by the home-virtual-servers that hold the private key segments. When the TTL is expired a different wallet-bot will be used to generate a new address/key and transfer the holdings to the new wallet address; then reallocating the segments to different servers on the p2p network.  

If a rogue bot did manage to steal coins from the network then the p2p network would immediately revoke the keys of the bot, identify the owner/admin of the bot, boot the bot from the p2p network, and the loss would be no more than $1000 USD.

An insurance bot would then activate and complete/replace the transaction of $1000 USD. The funds would come from insurance fees charged to the owners of the servers on the p2p network.

It is best to charge insurance fees to the admins on the p2p network. The admins would recoup the cost by charging transaction fees for the use of their server.  

If an admin's server was used in any transaction on the p2p network, the admins could charge a transaction fee to the users involved in the transaction.  This also gives admins incentive to be honest in service operations.





48  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 08:36:09 PM
Disposable wallet method can be further secured using the following means:

1. Add a TTL (Time To Live) to the disposable wallet. Whether there is a pending transaction or not, set a TTL on the disposable wallet. This way a rogue admin would only have a limited time to try an attack to collect all of the partial key pieces from the servers in the p2p network.

2. Because there are replicated virtual servers keep more than one online. I know I said earlier to keep one virtual server online and the replicated copies offline. But now I have changed my configuration and design. Keep more than three virtual servers online at a time. Split the partial keys up between the online copies, offline copies, and other semi-offline virtual servers that are not linked to that particular virtual server. for example:

NY-p2p-Server
home-virtual-server-002......online......wallet-key-home-virtual-server-002-bank-001-wallet-004.dat-segment-A-XXXXXX-A-segment-end
home-virtual-server-005......offline......wallet-key-home-virtual-server-005-bank-005-wallet-002.dat-segment-G-XXXXXX-G-segment-end
home-virtual-server-007......offline-monitored......wallet-key-home-virtual-server-003-bank-001-wallet-001.dat-segment-M-XXXXXX-M-segment-end
home-virtual-server-009......online......wallet-key-virtual-server-009-bank-003-wallet-003.dat-segment-P-XXXXXX-P-segment-end

This way a rogue admin would have to hunt the keys down outside of his home-virtual-server groups. The final key he may need may be on a home-virtual-server that he doesn't even know exists on a physical server on the other side of the globe.


3. Rotate newly generated disposable wallet partial keys among the home-virtual-servers.

4. Make sure each generated key is large enough to be split into 25 parts. Split then label each part from A through Y or B through Z.

5. NEVER KEEP MORE THAN $1000 IN ANY WHOLE DISPOSABLE WALLET.  I will explain why later when I explain about wallet-servers or wallet-bots. I will also introduce you to another wallet called an insurance-wallet.

6. Set hierarchies for the wallet-bots with most handling transactions of less than $100 USD.  Higher more secure wallet-bots from more trusted admins (with higher insurance fees) can handle larger amounts. Again never allow any single wallet-bot to handle more than $1000 USD. Period.






49  Bitcoin / Project Development / Re: Help Wanted $20,000+ Job creating Distributed Blockchain-based Exchange on: May 26, 2013, 05:38:13 PM
Have you looked at this Post?:

https://bitcointalk.org/index.php?topic=209269.0


I think this would be a better way to go.
50  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 05:25:05 PM
(MORE LATER TODAY)
51  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 05:22:49 PM
All the best with your project.

Thank you. I appreciate all of the support I can get.
52  Bitcoin / Project Development / Re: [ANN] P2P Decentralized Orderbook on: May 26, 2013, 05:15:15 PM
New Updates:  Disposable Wallet method stops rogue admins from stealing coins in wallet banks:

Disposable Wallet Method:

Just what is a "disposable wallet"? Its not just a wallet you use then throw away. Its way more complex than that.

A "disposable wallet" is a brain wallet that you generate using something like bitaddress.org.

If you click on the brain wallet tab of the site and enter a passphrase:

Quote
maryhadalittlelamb

the javscript will output this:

Quote
Bitcoin Address: 1Fcf6bCJWt2UGkK9fnTWnynY9dMcoA2v3v

Quote
Private Key (Wallet Import Format): 5KgCWZGaSqAFv5Fv74thJR4Gzv4KFPX13q4WidDmELnYNHoqGNf

After the wallet is generated. You can immediately send money to that address:

Bitcoin Address: 1Fcf6bCJWt2UGkK9fnTWnynY9dMcoA2v3v

If you send money to that address and do not use or import the private key into any bitcoin client then the transaction will be added to the blockchain and the coins will have a status of NOT-REDEEMED.

As long as you do not import the private key in to any Bitcoin client the status will not change.

A "Disposable wallet" is a one-time use wallet whose contents are in an un-redeemed state in the blockchain. Once the private key is imported into the Bitcoin client and a transaction has occured the wallet is then discarded. Any coins left over from the transaction are sent to a new "Disposable wallet" and those coins remain in a non-redeemed state in the blockchain as well.

How does that help secure the p2p exchange servers from rogue admins?

The answer is simple:

After generating the private key, you split the key into multiple parts and then store them on multiple servers in the p2p network.

With this scenario, there are no wallet.dat files even stored on the server. All that is stored are partial private keys.

If a rogue admin tries to access the wallet banks all he will be able to retrieve are partial private keys.



So how do you conduct a transaction?  With something I call a "wallet-virtual-server" or "transaction-server" I will tell you about that in the next post.



(I AM WRITING THIS WHILE YOU READ IT... CLICK REFRESH TO UPDATE THIS POST.)


https://bitcointalk.org/index.php?topic=209269.0
53  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 05:10:35 PM
How about making this into an easy to install pre-configured linux/bsd distro?

Users would be able to download the ISO and run it on just about any machine.

From my near zero knowledge of linux and from what I recall with speaking about it to colleagues over the years a variant of NETBSD is the most hardened out of the box no?

The point I was making earlier when I said that I could make the whole system with just Linux tools was that; if I could do it, then it should be easier for a software developer to do it.

If you know C, C++, or php you can do it a lot better than I can. You can make it more secure as well. I was just demonstrating the ease in which it could be deployed.

Perhaps a combination of Linux and Code. That would be far more secure.

You don't have to use a SQL database. Use a flat-file dB or anything you want.

54  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 04:24:12 PM
Disposable Wallet Method:

Just what is a "disposable wallet"? Its not just a wallet you use then throw away. Its way more complex than that.

A "Disposable wallet" is a one-time use wallet whose contents are in an un-redeemed state in the blockchain. Once the private key is imported into the Bitcoin client and a transaction has occured the wallet is then discarded. Any coins left over from the transaction are sent to a new "Disposable wallet" and those coins also remain in a non-redeemed state in the blockchain as well.

Disposable wallets are brain wallets that you generate using something like bitaddress.org.

If you click on the brain wallet tab of the site and enter a passphrase:

Quote
maryhadalittlelamb

the javscript will output this:

Quote
Bitcoin Address: 1Fcf6bCJWt2UGkK9fnTWnynY9dMcoA2v3v

Quote
Private Key (Wallet Import Format): 5KgCWZGaSqAFv5Fv74thJR4Gzv4KFPX13q4WidDmELnYNHoqGNf

After the wallet is generated. You can immediately send money to that address:

Bitcoin Address: 1Fcf6bCJWt2UGkK9fnTWnynY9dMcoA2v3v

If you send money to that address and do not use or import the private key into any bitcoin client then the transaction will be added to the blockchain and the coins will have a status of NOT-REDEEMED.

As long as you do not import the private key in to any Bitcoin client the status will not change.

A "Disposable wallet" is a one-time use wallet whose contents are in an un-redeemed state in the blockchain. Once the private key is imported into the Bitcoin client and a transaction has occured the wallet is then discarded. Any coins left over from the transaction are sent to a new "Disposable wallet" and those coins also remain in a non-redeemed state in the blockchain as well.

How does that help secure the p2p exchange servers from rogue admins?

The answer is simple:

After generating the private key, you split the key into multiple parts and then store them on multiple servers in the p2p network.

With this scenario, there are no wallet.dat files even stored on the server. All that is stored are partial private keys.

If a rogue admin tries to access the wallet banks all he will be able to retrieve are partial private keys.




So how do you conduct a transaction?  

With something I call a "wallet-virtual-server" or "transaction-server" or "wallet-bot".

I will tell you about "wallet-bots" in the next post.



 




(I AM WRITING THIS WHILE YOU READ IT... CLICK REFRESH TO UPDATE THIS POST.)
55  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 04:13:30 PM
Oh my Lord I almost had a heart attack. Either the president is in town or they were seriously trying to find me.

Ok. I talked to a security guard. He told me some rich lady with 20 bodyguards just went through. Maybe. But I saw them going from PC to PC looking at the screens. I got the hell outta there.

Ok I am back now.



56  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 03:39:40 PM
I got black suits all around me all of a sudden. be back...
57  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 26, 2013, 03:20:08 PM
I GOT IT!

Ok. Where do I start?

Last night I was thinking and meditation about how to secure the whole system to answer Michael question in the previous posts.

I really could not come up with a good way to secure the system. So I did what I did the night I came up with the BTA solution.

I prayed.

Afterward the answers came. Three answers actually.

The first answer was:

Quote
You don't understand the question. Look at it again

Ok. So I tried to remember Michaels post:

You use certificates and keys to secure the server nodes. A rogue node could not transact with any of the P2P server nodes.

But a legitimate node could disrupt transactions. What differentiates a rogue node from a "real" node?

I'm just saying I'd like to see you write something specific about the security of the exchange system you are proposing.

-Michael


Then I understood what he was actually asking. So I am going to rephrase the question:

Quote
What do you do to mitigate the worst case scenario?

What is the worst case scenario? I will tell you what it is.

A trusted sysadmin who has gone rogue.

Let's say that Gavin or Coblee's best friend and most trusted sysadmin in the whole p2p exchange network who's name is Charles decides:
Quote
Hey, I am tired of making peanuts for salary. I got a quarter million dollars in BTC in the wallet banks of my server. I think I will just empty them and then go to Cancun.

How do you stop a sysadmin who has gone rogue and has physical access to a server?

The truth is you cant.

and that when the second answer came to me:

Quote
Remove the wallet.dat files.

Remove the wallet.dat files?  If I remove the wallet.dat files from the server then how do conduct cryptocurrency transactions?

So, I though about it. Then I hit me. Like a ton of bricks.

It was genius. Plus, I could not believe that I had the answer all along. The answer was something I was already doing for my personal security.

Then I realized the answer was to use something that I call a "disposable wallet"

(I AM WRITING THIS AS YOU READ IT...  CLICK REFRESH TO UPDATE THE SCREEN)
58  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 25, 2013, 11:46:52 PM
Give me some time. I am going to think about this for a bit. Check back tomorrow.


59  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 25, 2013, 11:07:43 PM
Here is another feature I like about SDSI:

http://tools.ietf.org/html/rfc2693


Quote
4. Delegation

   One of the powers of an authorization certificate is the ability to
   delegate authorizations from one person to another without bothering
   the owner of the resource(s) involved.  One might issue a simple
   permission (e.g., to read some file) or issue the permission to
   delegate that permission further.

   Two issues arose as we considered delegation: the desire to limit
   depth of delegation and the question of separating delegators from
   those who can exercise the delegated permission.

What do you think?  Is SPKI/SDSI something that can fit in this p2p design?

Give me some feedback.
60  Alternate cryptocurrencies / Altcoin Discussion / Re: [ANN] USSC Crypto-P2P-Server | Decentralized P2P Exchange & Application on: May 25, 2013, 10:58:13 PM
Another feature I like about SDSI:

http://tools.ietf.org/html/rfc2693


Quote
2.8 Fully Qualified SDSI Names


   SDSI local names are of great value to their definer.  Each local
   name maps to one or more public keys and therefore to the
   corresponding keyholder(s).  Through SDSI's name chaining, these
   local names become useful potentially to the whole world.  [See
   section 2.6.2 for an example of SDSI name chaining.]

   To a computer system making use of these names, the name string is
   not enough.  One must identify the name space in which that byte
   string is defined.  That name space can be identified globally by a
   public key.

   It is SDSI 1.0 convention, preserved in SPKI, that if a (local) SDSI
   name occurs within a certificate, then the public key of the issuer
   is the identifier of the name space in which that name is defined.






Ellison, et al.               Experimental                     [Page 11]

 
RFC 2693                SPKI Certificate Theory           September 1999


   However, if a SDSI name is ever to occur outside of a certificate,
   the name space within which it is defined must be identified.  This
   gives rise to the Fully Qualified SDSI Name.  That name is a public
   key followed by one or more names relative to that key.  If there are
   two or more names, then the string of names is a SDSI name chain.
   For example,

        (name (hash sha1 |TLCgPLFlGTzgUbcaYLW8kGTEnUk=|) jim therese)

   is a fully qualified SDSI name, using the SHA-1 hash of a public key
   as the global identifier defining the name space and anchoring this
   name string.

Pages: « 1 2 [3] 4 5 6 7 8 »
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!