HTTP Advanced Check

Our HTTP checks for website monitoring at NodePing already include our standard HTTP Check, the HTTP Content Check that lets you verify that specific content is present or is not present in the page, and the HTTP Parse Check that allows you to track and alert on arbitrary data points in the response. Today we’re excited to announce that we’re adding the HTTP Advanced Check to our HTTP line up.

The new HTTP Advanced Check adds the following capabilities:

  • simulate a form POST to your web site and verify the expected response
  • check for arbitrary HTTP response status codes for custom API servers
  • send HTTP headers
  • verify specific HTTP headers are being received
  • send PUT, DELETE, HEAD, TRACE, or CONNECT methods

This will allow you to do more in-depth monitoring of your HTTP services. Use cases may include:

  • POST incorrect credentials to log in pages and verify the HTTP status code of 403 is returned.
  • Send mobile browser User-Agent headers and use the content checking to verify the mobile version of your site is being shown
  • Verify a PDF link is returning a PDF file by checking the return header for the correct ‘Content-Type’:’application/pdf’
  • Verify your redirect script is returning a 302 status code and not an error.

Additional information about this new check type can be found in our documentation.

The HTTP Advanced check is now available on all NodePing accounts. All accounts also include unlimited notifications, including international SMS. If you don’t have a NodePing account yet, please sign up for our free 15-day free trial.

Minor API enhancements added today

We have a couple of updates to our API.

You can obtain the current status of your checks using /api/1/results/current. This returns a list of checks that currently have an “event,” which means that the check is currently disabled or is listed as “down.” The information returned will include a timestamp when the event started. Checks not listed in the results for this call are currently “up.”

We’re also adding a couple of convenience tweaks. When you are getting a list of checks, you can add a “current” parameter in order to have any current events added to the check information. This basically mixes the information from the “current” call mentioned above in with the list of checks.

Additionally, when you are getting a single check, you can add a “lastresult” parameter to the request and get the most recent result for that check along with the check information.

All three of these changes are included in our API Reference documenation. Hopefully these minor enhancements will be of help. Feedback is welcome here or at support@nodeping.com.

Don’t let your certificate expirations catch you offguard

Microsoft’s recent slipup with a certificate that caused outages for the Azure service is a reminder for the rest of us to make sure we are keeping a close eye on certificate expirations. Having a certificate expire on you makes you company look really inept, but in practice keeping track of certificates and when they expire can be a pain if you are trying to do it manually. A system that monitors certificates and reminds you before they will expire can be an excellent way to avoid having this happen to you, and is much easier than tracking them in a spreadsheet or sticky notes.

NodePing provides a few different ways to keep ahead of certificate expirations. For web servers, we have an SSL Check specifically designed to check the validity of SSL certificates and warn you a set number of days before they expire. You can set the number of days to anything that is useful for you. We typically suggest a couple of weeks in advance of the expiration.

Certificate expirations can also hit other types of services as well. Our email checks (SMTP, POP, and IMAP) can verify the SSL/TLS certificates used by each of these servers. Similar to the SSL check for web services, these checks verify that the SSL certificate is valid and working, and also can be set to warn you a certain number of days before they expire.

Tracking your certificates can be a pain, but it doesn’t have to be. Using an automated monitoring system like NodePing for SSL Certificate monitoring can make the task easy and painless, and let you focus on more interesting things.

SIP Monitoring

If you run SIP servers, you’ll be pleased as punch to know we’ve just released a new SIP server monitoring check just for you. Now you can be alerted if your SIP server goes offline or isn’t responding to SIP commands.

SIP stands for “Session Initiation Protocol,” and refers to a signaling protocol that can run over TCP or UDP and is commonly used for voice and video communications. SIP servers are often the connection points for VOIP calls.

The check does not initiate a call, but rather tests that the the server accepts a SIP connection by sending the OPTIONS command and watching for the response. Even if your server does not support the OPTIONS command and returns an error, this indicates that the server is up and operating, so the check succeeds. You can find more information about this check in our SIP Check documentation.

This new SIP check is available today for all NodePing accounts. If you don’t have a server monitoring account with NodePing yet, head on over and sign up for our free 15-day trial.

RBL Monitoring

What better way to top off our email monitoring enhancements than with a new check type! We’re happy to introduce our RBL check.

RBL, or DNSBL, stands for “Real-time Black List,” and is used to publish the addresses of computers or networks linked to spamming, malware, or other abuses which system administrators may want to block from accessing their networks.

There are hundreds of RBLs in existence, which use a wide array of criteria for listing and delisting of addresses. These may include listing the addresses of zombie computers or other machines being used to send spam, listing the addresses of ISPs who willingly host spammers, or listing addresses which have sent spam to a honeypot system.

If the IP addresses of your servers appear on these RBLs, there’s a good chance you’ll have difficulty interacting with networks that subscribe to these RBLs. For instance, if your SMTP server is listed, you’ll likely be unable to send email to the systems that use the RBL you are listed on.

You can use our new RBL check to ensure that your servers aren’t listed and to receive notifications if they do get listed, allowing you to quickly take steps to remove your addresses from those RBLs. You can find more details about which RBLs we check and how to set them up in our RBL Check documentation.

Adding RBL checking to our already robust email monitoring checks for SMTP, POP3, and IMAP4 will help you sleep at night knowing that email is flowing as it should be.

RBL monitoring checks are available to all NodePing accounts. If you don’t have an account yet, you can sign up for your free 15-day trial of our server monitoring service.

POP Monitoring Enhancements

As part of strengthening our email server monitoring solutions, we’ve added a bunch of new features to the POP3 check type. They nicely complement our recent changes to our SMTP and IMAP checks.

New features include:

  • Non-standard ports. Specify any port, not just POP default port 110
  • SSL/TLS support on any port – not just 995.
  • SSL certificate validation
  • SSL certificate expiration warnings – configurable to X days before expiration
  • User login verification.

More details about the new POP server monitoring enhancements can be found in our documentation.

These features are available to all NodePing server monitoring accounts today. If you don’t have an account yet, you can sign up for a free 15-day trial at https://nodeping.com.

Now, if you just had a way to monitor spam blacklists for your server ip addresses… RBL Check is on its way!

IMAP Monitoring Enhancements

On the heels of our SMTP enhancement release, we’re happy to add some significant features to our IMAP server monitoring check. IMAP refers to one of the two most popular methods of email retrieval, the other being POP. IMAP4 services are supported by nearly all email clients and its use continues to grow.

We’ve added the following enhancements:

  • Non-standard ports. Specify any port, not just IMAP default port 143
  • SSL/TLS support.
  • SSL certificate validation
  • SSL certificate expiration warnings – configurable to X days before expiration
  • User login verification.

It’s easier than ever to ensure your IMAP services are available and configured correctly. Find more information about the new enhancements in our documentation.

The new IMAP enhancements are available to all NodePing accounts today. If you don’t have a NodePing server monitoring account yet you can sign up for a free 15-day trial.

Next check on the block for more enhancements – you guessed it – POP3. I hear there’s a RBL check in the works too! Keep an eye out here on the blog for the announcements.

SMTP Check Enhancements

We’ve rolled out some important enhancements to our SMTP check that will help ensure your email server is running as it should be.

Added enhancements include:

  • Non-standard ports
  • SSL/TLS support including certificate verification and expiration warning
  • STARTTLS support
  • AUTH with support for PLAIN, LOGIN, and CRAM-MD5
  • Mail acceptance verification including open relay notification

The SMTP check will now not only verify that your email server is running but can also optionally check to see if your server is an open relay or properly accepting mail for a particular email address.

The new open relay functionality will test to see if your mail server will accept mail for an address that should not be allowed. If your server is an open relay, we will send you a notification.

It’s also important to verify that your email server is not rejecting mail that it should be accepting. There are many reasons an SMTP server may reject email. The configuration may have changed or a particular mailbox may be over its quota. This enhancement verifies that your server will accept messages to an email address of your choice and send you a notification if it is rejected.

We’ve added extensive SSL/TLS support including STARTTLS as well as certificate verification and certificate expiration warnings. Simply set how many days in advance of the expiration you would like to be notified and we’ll send you an alert, giving you time to renew and install your new certificates.

The new optional AUTH support allows you to verify that users can log in and send mail using industry standard PLAIN, LOGIN, and CRAM-MD5 AUTH mechanisms.

You can find more information about our new SMTP check enhancements in our documentation.

These enhancements are available now to all NodePing customers. If you don’t currently have an account, please sign up for our free 15 day trial.

New Performance Summary Report and Updated Public Reports

Web site developers spend a significant amount of time and effort optimizing the site so that it loads quickly and performs well for their visitors. All of that effort is wasted if the web server performs poorly. One of the key uses for website monitoring is keeping an eye on web server performance to make sure that piece of the visitor’s experience is working optimally.

NodePing Monitoring Results Summary ReportWe have implemented a new report to help with this task. The Performance Summary report shows the minimum, maximum, and average response time for a site over an hour. By default, the report shows the last 31 days of performance data. As with the results report, you can change the number of results shown by editing the number on the report’s URL.

Of course, this isn’t limited to just web site performance. This report is available for all monitoring on NodePing, so you can see the same thing for ping results, ssh checks, email checks, and the whole range of other service monitoring we provide. In particular, this type of information is useful in ping tests to routers to watch connectivity performance over time.

We have also adjusted the way our “Public” reports feature works. The summary and results reports are now available if you are logged in to your NodePing account, even if the “Public” access is turned off. The “Public” toggle still controls whether the report is visible to visitors who are not logged in. We also changed the URL’s to better reflect that it is the same report with a different format. The results reports are now all at /reports/results/ (although the old URL’s will continue to work). You can retrieve the data in JSON or CSV format by adding ?format=csv or ?format=json to the URL. For CSV output, you can add a file name to the URL as well for convenience (so the URL would end in /filename.csv?format=csv). Documentation can be found in our reports documentation.

We are continuing to work on improving and expanding our reports. Please let us know what you think, and what you want to be able to see from the monitoring reports. Our continuing goal is to make NodePing not only the most cost effective, but also the most useful monitoring service anywhere.

Twitter Notifications

NodePing is happy to announce our newest notification method – twitter direct messages.  The ability to receive a twitter direct message is a great addition to our current notification system that already includes unlimited email, international SMS, and voice calls.

Twitter notifications are in testing at this point.  They are available on all accounts so please do kick the tires and let us know how things work for you at support@nodeping.com.

You’ll need to follow @NodePing in order to get direct message alerts.  Then add your twitter handle in your contact record and in your check’s notification section and we’ll send you a private and discrete ‘direct message’ (not an embarrassing public tweet) when that check goes down and again when it comes back up.

Let us know in the comments how this new notification type is working for you and what you’d like to see added next – instant message (IM), HTTP POST to url, carrier pigeon, etc?

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