PCI Compliance over wireless-

Plain and simple what are the best ways to handle PCI compliance over a wireless network. The first person that says create a seperate SSID will not get rated ...
Mainly in regards to:
Segment the wireless network from other network traffic
(Section 3.3, PCI DSS 1.2.3)
Tom

Please have a look on the docunment for Cisco Wireless Networking and PCI Compliance:
http://www.cisco.com/c/en/us/products/collateral/enterprise-networks/pci-compliance/white_paper_c11-641421.html

Similar Messages

Patching vulnerabilities for PCI compliance

Hi
My Apple Profile Manager server has failed a PCI compliance scan, due to the vulnerabilities listed below. The OS and the software are patched to the highest level, but its still failing
What do i need to do to be able to resolve these? If i can't patch them by Thursday, i'll have to shut down the server
SSL/TLS use of weak RC4 cipher                                                            CVE-2013-2566
OpenSSL Multiple Vulnerabilities (OpenSSL Security Advisory 20140806)    CVE-2014-3512
                                                                                                               CVE-2014-3511
                                                                                                               CVE-2014-3510
                                                                                                               CVE-2014-3507
                                                                                                               CVE-2014-3508:
                                                                                                               CVE-2014-5139:
                                                                                                               CVE-2014-3509:
                                                                                                               CVE-2014-3505:
                                                                                                               CVE-2014-3506
Apache Partial HTTP Request Denial of Service Vulnerability - Zero Day     CVE-2007-6750

If your running OS X 10.9.2 as your message indicates then you are not patched to the highest level. (By a long way.)
OS X 10.9.5 plus Security Update 2014-005 would give you all the current patches for Mavericks. If you upgraded to Yosemite and Server.app 4.0 you would get some further updates. (Server 4.0 would have to be purchased although Yosemite aka. OS X 10.10 itself is free.)
Even with all of those I suspect some of the issues you list will not be patched. In theory you could manually compile and install patches but this is generally a very bad idea as you will then break compatibility with Apple's own software such as the server configuration tool Server.app and likely break Profile Manager completely and if you use it the Wiki module.
If you want complete control over patching the software then OS X is not going to let you do this with out as mentioned above severe consequences. Only Linux gives you that level of control. Arguably Windows gives you even less control than OS X as in Windows it is all closed source (Microsoft) software.

Upgrade firmware for PCI compliance scan

I have a WRT54G ver. 5 wireless router running ver. 1.02.0 firmware. I'm anticipating a PCI compliance scan which my bank requires since I transmit credit card numbers from here for my online business. I'm wondering if I should upgrade to the latest firmware version (1.02.6) before the scan. The router is working fine and I'm a great believer in not fixing things if they aren't broken. Does the upgrade make security improvements (which I should have) or just fix problems (which I don't have)?

If the router is upgraded with latest firmware...it resolve many problem.So if you get some time you may upgrade the firmare .

Failing PCI Compliance Scan - SSL Weak...

Hello,
I currently use the WRVS4400n v2 (latest update) for my small business. I store and transmit data that contains credit card information and need to be PCI compliant. Regardless of which settings I change on the router, like turning off remote management, I keep failing the scan. ControlScan uses Nessus and the results are below (2 vulnerabilities).
I did some research and spent some time with Cisco Sales Chat and they recommended a ASA5500 only to realize that it too had the same vulnerabilities. I did more research and it seemed that the SA520w (I need wireless) would do it but I found a thread on this forum saying that a client who had the SA520w did not pass the scan failed due to SSL vulerability (need v3+ ?). The thread is at https://supportforums.cisco.com/thread./2060512
Question: What router/appliance should I use to be PCI compliant? Three has to be something, we're talking, this is Cisco.
Thank you in advance for your help,
Christophe
Threat ID: 126928
Details:
IP Address: XX.XXX.X.XXX
Host: XX.XXX.X.XXX
Path:
THREAT REFERENCE
Summary:
SSL Weak Cipher Suites Supported
Risk: High (3)
Type: Nessus
Port: 60443
Protocol: TCP
Threat ID: 126928
Information From Target:
Here is the list of weak SSL ciphers supported by the remote server :
Low Strength Ciphers (< 56-bit key)
SSLv2
EXP-RC2-CBC-MD5            Kx=RSA(512)   Au=RSA     Enc=RC2(40)      Mac=MD5    export
EXP-RC4-MD5                Kx=RSA(512)   Au=RSA     Enc=RC4(40)      Mac=MD5    export
The fields above are :
{OpenSSL ciphername}
Kx={key exchange}
Au={authentication}
Enc={symmetric encryption method}
Mac={message authentication code}
{export flag}
Solution:
Reconfigure the affected application if possible to avoid use of weak
ciphers.Details:
The remote host supports the use of SSL ciphers that offer either weak encryption or no encryption at all.
Threat ID: 142873
Details:
IP Address: XX.XXX.X.XXX
Host: XX.XXX.X.XXX
Path:
THREAT REFERENCE
Summary:
SSL Medium Strength Cipher Suites Supported
Risk: High (3)
Type: Nessus
Port: 60443
Protocol: TCP
Threat ID: 142873
Information From Target:
Here are the medium strength SSL ciphers supported by the remote server :
Medium Strength Ciphers (>= 56-bit and < 112-bit key)
SSLv2
DES-CBC-MD5                Kx=RSA        Au=RSA     Enc=DES(56)      Mac=MD5
SSLv3
DES-CBC-SHA                Kx=RSA        Au=RSA     Enc=DES(56)      Mac=SHA1
TLSv1
DES-CBC-SHA                Kx=RSA        Au=RSA     Enc=DES(56)      Mac=SHA1
The fields above are :
{OpenSSL ciphername}
Kx={key exchange}
Au={authentication}
Enc={symmetric encryption method}
Mac={message authentication code}
{export flag}
Solution:
Reconfigure the affected application if possible to avoid use of
medium strength ciphers.Details:
The remote host supports the use of SSL ciphers that offer medium strength encryption, which we currently regard as those with key lengths at least 56 bits and less than 112 bits.

Chris,
As i understand right now none of the Small Business router are PCI compliance ever since PCI 3.0 was released. How you overcome this; you'll need to forward any ports you are failing on to a ghost IP.. Ghost ip (any ip address that isn 't being used) If you are using those ports , then you will lose that service as the router isn't PCI 3.0 compliant.
Jason
I do believe the ASA5505 are PCI 3.0 Compliant.

Image processing over wireless

Hi,
One of our subsidaries has a setup where continuous video stream is generated from certain application servers processing real time image processing.
The setup goes this way; 3 PC's which run these image processing & are connected to a 3750G switch.
This switch is uplinked to an access point which then carries all these over wireless to the image processing main server.
About two weeks ago, when they tested this ,all 3 PC's had issues running together when operators viewed/worked upon the images on them.
When either one or two of them is turned off, the rest works fine with no disturbance( intermediate stop & start of images ).
Please help with suggestions on what could be the cause. I suspect bandwidth, but since this doesn't cover any WAN links, i doubt that bandwidth is actually the problem.
Thanks in advance.

It depends. QoS will help if your having congestion on the wired side. WMM QoS will help for over the air. I would look at the switch port and see if you see drops on both the map and rap side. You might just be over utilizing the backhaul. Remember that it is half duplex link so that can be an issue also. I had an install with regular AP's and 3gb video uploads within 30 minutes and the only way to achieve that is only allowing 4-5 clients per AP. the testing you have done seems to show that the max you can do over that link is 2. How much other traffic is using the wireless. Maybe try to isolate those traffic on a separate RAP/MAP pair using AP Groups.
Sent from Cisco Technical Support iPhone App

Time Capsule Painfully slow internet over wireless (not so over ethernet)

I dont know what it is, but when I use the TC over wireless, it is over 10 times slower than if I just stick an ethernet cable in my macbook. I get 50k/sec TOPS over wireless. I get 600-2MB/sec over the ethernet.
Im seriously using an ethernet cable right now because I cant stand it.
I have restarted the thing 50 times now. (modem too)
I have an N capable macbook.
I have time machine TURNED OFF
I have tried all different frequencies.
It is not just my macbook, but every wireless device on the system.
I had an N basestation I replaced, it was super fast.
My ethernet and airport settings are identical.
I have tried. all settings of B,G,N 2.4 and 5ghz.
I have tried interference robustness on and off.
It is not the internet going to it, and it is not the environment it is in as It is sitting in the exact same place my N base station was in.
I seriously hate this thing right now... And I am as big of an apple fan as they come.
Please help me!

I unplugged it again and plugged it back in again... and it seems to have worked.
Why it didnt before, and how long this will last is anyones guess.
I just wish it was as reliable as my previous N base station.

Randomly losing network connection over wireless

Shortly after installing the 10.4.5 software update, my G4 iBook with built-in Airport Extreme card has been losing connection with increasing frequency. Built-in Ethernet use is unaffected. I'm calling this problem thrash-and-drop.
1. When it's losing signal, processor activity goes through the roof. I had Activity Monitor running during a thrash-and-drop. kernel_task CPU consumption goes from under 1% before the event, to over 80% during the thrashing, and back under 1% after the thrashing stops. The activity is so bad the cursor can't be controlled: using the track pad sends the pointer all over the screen or nowhere at all.
2. This has been observed to occur with two different wireless base stations: A Linksys WRT54G and an older SMC 802.11b router. Either router is within 10 feet of the computer. Only one is running at a time. There are no other base stations in range.
3. Another iBook G4 (OS 10.3, Airport Extreme card (not built-in)), sitting next to it, shows no change and its wireless behavior is unaffected.
Initially, this seemed more likely to happen when Safari was loading Flash-heavy pages. And after thrashing and dropping a connection, it was able to reconnect after either a reboot or a five minute sleep. Currently, it can't connect to a base station for more than a minute. Most recently, it thrashed and dropped while I was selecting the base station to use. This is true regardless of the application running. In fact, it will thrash-and-drop when there are no user applications running at all, after a fresh reboot.
I've tried the following things to address the problem. None have affected the thrash-and-drop problem. Admittedly, most of this is random:
1. Back up and delete network preferences in /Library/Preferences/SystemConfiguration
2. Turn off IPv6 in System Preferences/Network
3. Back up and delete network preferences in ~/Library/Preferences (com.apple.NetInfoManager.plist and com.apple.NetworkUtility.plist)
Has anybody else seen this problem? I want to blame it on the 10.4.5 upgrade but I haven't seen anybody else complaining about 10.4.5 doing this to them. If there's something I can do to fix this in a software setting, I'd much prefer that to yet another roadtrip to the Apple store.
1.33 GHz G4 iBook Mac OS X (10.4.5)

Hi!
I have the same problem of randomly losing network connection over wireless, though mine is hardly related to surfing.
I have an external storage drive in which I use for backup of my stuff, and I access the drive via my modem, using the airport. Of late, I noticed that when copying files from my iBook to the external drive, the connection would suddenly drop before the transfer is completed. This began to occur with increasing frequency, particularly when transferring large files.
I have since abandoned wireless connection, and reverted to my trusty cable. Still, I admit that I'm really curious about the cause of the apparent lack of reliability with my wireless connection. Has it something to do with the airport?
1.33 GHz iBook G4 Mac OS X (10.4.5) New to Mac, just switched from Windows 4 months ago.

Color LaserJet 3600 and 10.6 over wireless (Broadcom Wireless Chipset)

Checking the archives, I've found that I'm not the only person who has experienced problems printing to a Color LaserJet 3600 via wireless. Those threads were archived with no solution so I couldn't reply, but I wanted to expand on what I discovered.
It is not so much Mac OS X 10.6, but the way HP's horrible host-based printing drivers are tied to the wireless. I've discovered that laptops with 10.6 that are also using the newer Broadcom BCM43xx chipset will garble their print command, causing the print queue to mess up on the host machine, and the printer to become unresponsive to all other machines (it perpetually thinks there's something in the queue, so no other print commands will go through.) The three laptops I tested were the unibody aluminum 13" MacBook Pro, unibody aluminum 15" MacBook Pro, and the plastic unibody 13" MacBook; all with clean installs of 10.6.2. All three laptops have the same printing error.
Laptops with the Atheros 5416 chipset work fine, even with 10.6. Laptops tested with this chipset were the aluminum 15" MacBook Pro, aluminum 17" MacBook Pro, and the white MacBook.
This is not any fault of Apple, it is HPs abysmal host-based printing system. The solution to this problem until HP updates their printer drivers is to use the open source HPIJS drivers (HP drivers for the Linux Foundation Open Printing.) You'll need HPIJS, Foomatic-RIP, and Ghostscript; all installers are listed and come with uninstallers should any unexpected errors occur.
I don't know Apple's policy on linking to external websites, but a simple Google search for HPIJS will give the desired link.
This may be a good solution for 10.4 and 10.5 clients working across subnets, as the HPIJS drivers can be used via simple LPD/LPR instead of the HP IP Printing System that relies on mDNS.
Once installed, when you type in the IP address of your Color LaserJet 3600, you'll be presented with the option of choosing the HPIJS driver.
Additionally, if you use the HP drivers for the LaserJet 3600 over both wired and wireless network, you must add the printer while on the wireless network only; it is important that you disconnect the ethernet cable. If you add the printer while using a wired connection, the printer will not work over wireless; however, if you add the printer while on a wireless connection, the printer will work on either wireless or wired.
Yes, the HP host-based drivers are that ridiculous.

Unfortunately 10.6.3 did not fix the problem.
I've also, unfortunately, found out that the HPIJS will also eventually fail to print.
This is beyond frustrating since we invested several thousands of dollars in these printers and we can't use them.

AirTunes not working over wireless from Windows 7

Setup:
Dell Inspiron 15 laptop (Windows 7 Home Premium)
Airport Express
Network:
ADSL router
+- Desktop PC (ethernet to router)
+- Airport Express (ethernet to router)
+- Dell laptop (wireless to Airport Express)
The Airport Express creates a wireless network (802.11n, 2.4GHz). The Dell laptop can't see the speakers. My Macbook Pro works fine. I've determined that the problem is that IPv6 isn't working over wireless. The Dell laptop can't see the Airport Express with the Airport Utility either.
When I plug the Dell laptop into the ethernet on the ADSL router, everything starts working fine. If you look at the interface information DHCPv6 is up.
Without the cable plugged in my wireless connection says:
IPv6 Connectivity: No network access
When a cable is plugged in:
IPv6 Connectivity: No internet access
(which is how it should be).
I am pulling my hair out here and have absolutely no idea why this won't work.
Firewall is completely disabled. The router also creates an 802.11g network but it's settings shouldn't matter (wireless isolation, which is turned off, and so on).
Any suggestions?

Hi,
Download and install the switchable graphics driver on the following link.
http://ftp.hp.com/pub/softpaq/sp59001-59500/sp59147.exe
When the installation has completed, restart the notebook.
Regards,
DP-K
****Click the White thumb to say thanks****
****Please mark Accept As Solution if it solves your problem****
****I don't work for HP****
Microsoft MVP - Windows Experience

HP Photosmart C4380 [8A36CB] communication error with MacBook OS 10.7.5 over wireless

Hi,
I keep getting the message 'communication error' when trying to print wireless to a Photosmart C4380 from my MacBook (OS 10.7.5) through a TimeCapsule 2Gb router.
The message also says: "/usr/libexec/cups/backend/dnssd failed" but I don't know what to do with it...
I tried to de- and re-install, restart laptop, printer and router and pull all plugs in different sequences, first use the USB cable to install wireless and all other help from HP ... but nothing seems to work (HP Doctor is not available for Mac).
The strange part is that:
1.it started a couple of weeks ago, without having changed anything (by my knowledge),
2. printing from my iMac works fine (same wireless network, same software version, same settings, etcetera)!!!
2. printing over USB from my MacBook works fine
3. I can print a test-page from "HP Utility" form my MacBook (and of course from my iMac but that one works fine anyway)
4. I can access the printer through "http://hp8a36cb.local./index.htm?cat=info&page=printerInfo" and there are no issues mentioned whatsoever,
5. the 'HP Network Configuration Page' and the 'Wireless Network Test Report' congratulate me on the successful setup of my wireless printer... but it doesn't work.
I've read almost all posts about communication errors over wireless but haven't found an answer to my issue (yet).
Is there anyone with a solution? Please??
This question was solved.
View Solution.

Download and install this: http://support.apple.com/kb/DL907
Restart your Mac.
Reset the printing system:
- Go to System Preferences > Print & Scan
- Right (or control) click in the rectangle listing your printers and select Reset Printing System.
WARNING - this will delete ALL of your printers!
- Select the plus sign to re-add a printer. Select the Defualt tab on the top of the window. Look for the printer, select it and then next to the "Use" pulldown, select the printer model (not AirPrint). Wait until the "Add" button becomes available. Click it.
Say thanks by clicking "Kudos" "thumbs up" in the post that helped you.
I am employed by HP

SAP Short Dumps and PCI Compliance

We've run into an issue with our PCI Compliance audit around being able to see unencrypted credit cards in short dump messages in SAP. Has anyone run into this issue?
Only work around I've got at this point is to restrict all access to short dumps and require many documented signoffs before turning on and off access to a short dump. This is pretty cumbersome, and still leaves a hole in my overall security.
We've managed to purge restricted CC data from our XI logging, and done everything right with encryption, but this short dump issue just doesn't seem to have a solution.
Can anyone help? We're on 6.0.
Thanks!

Hi David,
This is an interesting situation you have described. ABAP short-dumps or run-time errors as they are also known as, are unhandled exceptions during program execution. The conditions that cause such exceptions is unknown or cannot be handled at run-time. To help analyze what went wrong with the said program during execution, it is necessary for the dump to contain all possible information including data values passed between programs when the error occurs. Encryption of restricted data values is a program step in itself. If the dump were to occur after this step then of course it would contain encrypted CC info. Unfortunately in your case it exposes restricted CC info because the dump occurs BEFORE this step.
I don't believe there is a way to prevent this from happening -- for the same reason that the program logic does not know at run-time how to "handle" the exception. If occurrences of such dumps is fairly common in your system, you may want to investigate the likely causes -- for example, missing or incorrect customization. Analyzing the short dumps will probably give you a clue. Your customization team may be able to identify a pre-condition that causes this unhandled exception. If this exception can then be handled (via a program change) that returns a meaningful error instead of a short dump you would be able to close the security hole. This however entails modification to SAP standard code. I don't usually recommend such changes, but given the sensitive nature of your data it may be worth consideration.
I personally advocate restricted access to ST22. The steps you have undertaken to enforce this may be cumbersome despite efforts to keep it simple. I suppose that's the price we pay in administering the system. If you have not already done so, you may also want to ensure that short-dumps that contain restricted CC info are not saved (using the "Keep" feature in ST22) for easy retrieval at a later point in time or they are saved, it be available only to 'restricted eyes'. Short-dumps are normally saved in the system for 7 or 14 days (not sure of exact # of days). The bigger challenge in my opinion is: How do you prevent the restricted info from being viewed by the user who during the course of program/transaction execution encounters the said short dump? No amount of security controls around ST22 will mitigate this risk. The only option that remains is program change (as mentioned above). But to get there you first need to know what causes the exception.
Regards.
Ashutosh

HP210a print jobs fail over wireless, but can still print Test Diagnostic page over network

Help! I cannot print over the wireless network anymore. When I try, the print job queues up and I get "Error - Printer" message. I can print the Test Diagnostic page just fine over the network. I can also print fine when connecting via USB port. I have the latest firmware. Any ideas?

Hi HP_210a_user,
Thank you for visiting the HP Support Forums and Welcome. I have read your thread on your HP 210a printer and not printing over wireless. HP Print and Scan Doctor.
The HP Print and Scan Doctor will help resolve this issue. I would also restart the printer. Unplug wait 1 min plug back in.
Hope this helps.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

How do I share a drive over wireless?

I recently read an article on CNet that showed how to share a drive over wireless...on Windows. I have a Macintosh and Airport Express 2g router. Is it possible to share a drive over the USB port in the Airport express to other Mac or iOS devices? For reference, I have linked to the CNet Windows sharing article below. They didn't give any Apple instructions, so I am asking here. Thanks in advance!
http://www.cnet.com/how-to/share-an-external-hard-drive-over-a-wi-fi-network/

You can share files.. with the following notes..
Sometimes what you can do is not what you should do.
Store files on the TC.
This is asked several times a day.. obviously people are struggling with their latest SSD being too small.
The TC is not suitable for network file server.. but many people having no choice press it into service as such.
Major issues.
1. No backup.. no way Time Machine can backup a network drive. No place to backup to.. So all your files will be at risk on the TC. And you will need to buy a third party like CCC to do backup.
2. The TC cannot be partitioned and mixing TM backups and data is not great. It was and is and ever shall be a backup device for Time Machine.
3. The drive is slow to spin up and quick to spin down.. there is no control. In fact the TC is so lacking in controls for even the router side.. that you cannot do more than the most basic of setups.
The following are controls on the hard disk side.
Reformat it. You can name the share. You can do a full archive of the whole disk. This will go at a speed of aprox. 30-50GB/Hr so calculate how long an archive of a full 2TB will take.
4. iPhoto in particular can easily corrupt its entire library with wireless networking causing a disconnection to one photo. Even if you do this;;; do not move your photo library... you have been warned!!
Even apple btw say don’t do it.
http://support.apple.com/kb/TS5168 Although mostly about FAT32 it adds network drives.
5. iTunes can constantly lose connection to the library. The disk is slow to respond.. itunes on the computer will constantly spit out errors. Even in the midst of streaming the TC can spin down the disk due to caching.
6. Do not use any live files on the TC no matter what else you do.. if you edit files in whatever program the file must be on the local hard disk.
7. The only suitable location for most libraries is a computer. You can plug in an external hard disk.
Read pondini for some work arounds.
Q3 here. http://pondini.org/TM/Time_Capsule.html

Pci compliance for very small biz using mac and ipad

I run a very SMALL business. We have one MacBook an iPad and an iPhone. We run everything through a second party merchant card processor/software (mindbody). However, according to the PCI compliance survey I just finished, I am supposed to run quarterly internal scans for vulnerabilities. Does antivirus software do this?
Also, what firewall settings do I need on my mac to be PCI compliant?
I know this may be a very simple question, but the PCI survey assumes everyone has an IT department with a ton of policies and procedures. Trying to figure out how to be compliant as a super small business without all that infrastructure.

Anti-virus software would not do PCI vulnerability scanning. You need specialized software to do that. Unfortunately, I cannot recommend specific software. My wife's small business was wrestling with PCI issues some time ago, and they're currently not doing any kind of internal scans. I don't know why not. They do get scanned externally periodically, to look for vulnerabilities in their setup that could allow people outside their network to gain access.
PCI compliance is a scam anyway. It doesn't prevent the numerous breaches that so many high-profile companies have been facing lately, and you can bet they're dotting their i's and crossing their t's with respect to PCI compliance. They have the budget to do so.
Your Mac should not need the firewall on. That shouldn't affect PCI compliance, if the Mac is properly configured and does not have any services open in System Preferences -> Sharing.

Internet sharing over wireless

Didn't see anyone post this but is anyone else having problems with Internet Sharing over wireless?
Trying to have the macbook connect to the iMac over wireless and use the iMac's wired internet connection. On the iMac, the Airport card is on, and in network preferences, internet sharing is turned on. However, the options for sharing over wireless is grayed out and I can't get into those options to customize it. On the macbook, it doesn't see it in the available networks list to connect.
Am I missing something? Do I need to "create a network" on the imac now? I didn't have to do this in 10.4.10

After much consternation and countless trials I finally have everything back up and working. Here is what I did finally to get it to work. (Note that I am not a network configuration expert - I am only reporting exactly how I have it configured and it works without complaint).
1. I trashed my \Library\Preferences\System Preferences folder and restarted my Mac since I had updated from 10.4 and I wanted to start from a fresh set of preferences. ( I backed up that folder separately)
2. I opened the Network Preference pane and configured my Ethernet connection (connected to my external AirPort Express which I am using as a wireless router to my other computers) as follows:
-Configure: Using DHCP
-IP Address: 192.168.0.197
-Subnet Mask: 255.255.255.0
-Router: 192.168.0.1
DNS Server: 192.168.0.1 (grayed out and so I am not sure what this means)
I set these settings by clicking on the Advanced button.
Under the TCP/IP tab I had chosen:
- Configure IPv4: Using DHCP
(This set the IPv4 Address, Subnet mask and Router)
- Configure IPv6: Automatically
3. On the Sharing Preference pane, I configured the following:
-Share your connection from: Novatel Wireless EXPD (because I have a 3G wireless connection; otherwise I would have chosen the standard Internet connection)
-To computers using: "Ethernet"
And then I turned on the Internet Sharing Service and confirmed in the pop-up dialog that I wanted to share my Internet connection.
4. Using Airport Utility, I configured the Airport Express by first clicking the Internet button to show the Internet Connection page and set the following:
- Connect Using: Ethernet
- Configure IPv4: Manually
- IP Address: 192.168.0.179
- Subnet Mask: 255.255.255.0
- Router Address: 192.168.0.1
- DNS Server: 192.168.0.1
- Ethernet Wan Port: Automatic (Default)
- Connection Sharing: Off (Bridge)
I also configured my Base Station and Wireless with names and Passwords.
I then clicked Update in AirPort Utility and after it restarted everything magically worked!
I think that the problem lay with my original IPv4 settings where I had chosen DHCP rather than Manually hoping that everything would automatically be set as it had worked previously. The clue was that on my MacBook Pro I noticed that the DHCP was not enabled when connected to the AirPort Express. Even my iPod Touch is now connected to the Internet!
If anyone can explain all of this I would appreciate it.

PCI Compliance over wireless-

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