[ACTION REQUIRED] IP Addresses of reCAPTCHA Verification Servers Changing

[reCAPTCHA Support]

Hi reCAPTCHA Users,

As part of our move to Google infrastructure, we will be moving our API to be served from Google infrastructure in the near future. It is important that you be prepared for the IP address of api-verify.recaptcha.net to change in the very near future.

• If you are using Java, you must ensure that your JVM has proper settings for DNS caching: http://wiki.recaptcha.net/index.php/Overview#Important:_DNS_Caching
• If you have firewall ACLs, you must update them to allow all Google IP addresses. We strongly recommend that you either a) allow outbound access to all IPs on port 80 or b) use a proxy server to do access control based on host name. While we can not provide official support for IP Address based ACLs, Google's public IP space is listed here http://ws.arin.net/whois/?queryinput=google. If you wish to use IP based ACLs, you should allow access to all IP addresses on that page, and periodically refresh the page to catch any updates to Google's IP space.

We are asking all users to take these measures by Thursday, March 18.

- Ben

--
reCAPTCHA: stop spam, read books
http://recaptcha.net

[Squeak]

Hi Ben

Thanks for letting us know about this, but what exactly is required.
I have installed reCAPTCHA on a number of sites but I can't remember
assigning an IP address.

Is this purely for Java applications and firewalled websites?

On Mar 12, 2:53 pm, reCAPTCHA Support <supp...@recaptcha.net> wrote:
> Hi reCAPTCHA Users,
>
> As part of our move to Google infrastructure, we will be moving our API to
> be served from Google infrastructure in the near future. It is important
> that you be prepared for the IP address of api-verify.recaptcha.net to
> change in the very near future.
>

>    - If you are using Java, you must ensure that your JVM has proper

>    settings for DNS caching:
>    http://wiki.recaptcha.net/index.php/Overview#Important:_DNS_Caching

>    - If you have firewall ACLs, you must update them to allow all Google IP

[reCAPTCHA Support]

Most users will not have to do anything for this. We will change the address of the reCAPTCHA server using DNS, so you will automatically pick up the change.

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[inkhaton]

I have no firewall issues, all outboun on port 80 is allowed, but my
captchas fail since the switchover. Im using a wordpress plugin. Any
ideas?

> > recaptcha+...@googlegroups.com<recaptcha%2Bunsu...@googlegroups.com>

[reCAPTCHA Support]

Hi,

It's possible you have a buggy dns resolver. Try changing to use http://code.google.com/speed/public-dns/

To unsubscribe from this group, send email to recaptcha+...@googlegroups.com.

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[inkhaton]

Tried changing DNS, all ping, curl and telnet tests are ok from my
server. All other settings are the same as when the switch happened at
4pm - no error messages in logs.. I hope there is something else to
try

On Mar 22, 10:05 pm, reCAPTCHA Support <supp...@recaptcha.net> wrote:
> Hi,
>

> It's possible you have a buggy dns resolver. Try changing to usehttp://code.google.com/speed/public-dns/

> > <recaptcha%2Bunsu...@googlegroups.com<recaptcha%252Buns...@googlegroups.com>

[reCAPTCHA Support]

Can you run tcpdump -s 10000 -X while you are sending a comment to your website and attach the output here.

To unsubscribe from this group, send email to recaptcha+...@googlegroups.com.

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[inkhaton]

Currently I am unable to. Can you tell me what you might be looking
for since the problem seems to ba happening since the switchover
yesterday and nothing on my server has changed. I would be happy to
provide you any dumps but it will be a while before I can access
them. Thanks

[inkhaton]

Actually, I seem to have found a promising solution here:
http://wordpress.org/support/topic/379193

but have not been able to try it yet.
From the link :
"I've just fixed this by copying the official recaptchalib.php over
the one included in the plugin. I think they've made some
modifications and those modifications have been broken by reCaptcha
changing their hosting structure."