"CHANGES THAT MAY AFFECT PAYMENTS - UPDATE
Dear Customer,
On Wednesday 17th February 2010, we will be making an essential technical change that could affect your ability to accept payments. Please ask your Technical Staff to review the following information as soon as possible to ensure your service operates without disruption. (Please note that this work was originally planned for 25th November but had to be rescheduled.)
On 17th February 2010, we will be changing the IP address range for the payments tokens that you send to the RBS WorldPay payment service.
There are no changes to the URLs you use for this service and the current URLs remain valid. However, if your firewalls require definition of our IP addresses please note that the range of addresses we use will be changing (to 155.136.16.0/24). These changes were enforced in the Test Environment on Wednesday 3rd February (affecting merchants who are testing) and will be enforced in the live Production Environment on 17th February.
Please ask your Technical staff to review our Technical FAQ as soon as possible and, if necessary, make these changes to your system's configuration settings. This is important because if your system does require definition of our IP addresses and you don’t make necessary changes, your ability to accept payments will be affected.
Technical Information - how do I know if I am affected?
To test whether you need to make any changes before we change to the new IP range (155.136.16.0/24), you should try to access a URL directly via an IP address for the host from your servers that communicates with our services. For example,
http://155.136.16.19/paymentService_v1.dtd and
http://155.136.16.33/paymentService_v1.dtd should both return an ‘XML DTD’ file. If this works, your system should be fine and will require no further changes in advance of this change. If an ‘XML DTD’ is not returned, please follow the advice in the Technical FAQ as soon as possible.
Thanks for your support "