How to Make Your DNS Infrastructure More Redundant

No-IP Squared (Backup DNS) offers a great way to beef up your DNS infrastructure. As of this writing, we have points of presence in over 100 locations across the globe.

If you maintain your own DNS server it’s pretty easy to setup. Follow these simple steps:

Follow these simple steps:

1. Edit your DNS server to allow zone transfers to our distribution server. You want to make sure that when you make updates to your zone file that our system knows about it.
Slave name servers check for zone transfers based on the REFRESH SOA (Start of Authority) value for your zone. A secure name server will disallow zone transfers to the public. You’ll need to allow zone transfers to our system 8.23.224.170.

This is what it will look like in BIND:

zone "dansfishtanks.com" {
....
allow-transfer { 8.23.224.170; };
}

Since the address 8.23.224.170 is not on a public facing name server, you should also enable notifies. Notify short circuits waiting for the refresh timer to expire and tells all of the slaves to go grab
a new copy of the zone right away.  But since our distribution server is not listed in the zone file, you’ll need to use also-notify

Your BIND configuration will now look like this:

zone "dansfishtanks.com" {
....
allow-transfer { 8.23.224.170; };
notify yes;
also-notify { 8.23.224.170; };
}

2. Configure your master IP in the No-IP Interface: Go to Manage Domains. Select your domain, then click edit. Here, you will enter the IP address of your master server.

3. Behind a Firewall? Make sure you don’t have any firewall rules that would prevent our servers from talking to yours. You’ll need port 53 UDP and TCP open for 8.23.224.170

4. Verify the zone transfers work properly. You can make a test change to your zone file by just incrementing the zones serial number and applying the update. Then, verify that we have the new ip address.

Using Dig you should see the following:

dig @yournamserver.com mydomain.com SOA +short
Apply serial number update

dig @yournameserver.com mydoimain.com SOA +short
Should see new serial number

Then check us
dig @8.23.224.170 mydomain.com SOA +short
This should match the new serial number, if it doesn’t match then something is not quite right. Try reviewing the steps above for an error, or if you still cant quite get it, give our support team a buzz, that’s what they’re here for.

5. Update your zone file to include our name server (NS) records. So, if you’ve made a successful update to our system, now its time to add our
NS records to your zone.

Your BIND zone file might look like this:

$TTL 2d ; default TTL is 2 days
$ORIGIN example.com.
@ IN SOA ns1.dansfishtanks.com. hostmaster.dansfishtanks.com. (
2003080800 ; serial number
2h ; refresh = 2 hours
15M ; update retry = 15 minutes
3W12h ; expiry = 3 weeks + 12 hours
2h20M ; minimum = 2 hours + 20 minutes
)
; main domain name servers
IN NS ns1.dansfishtanks.com.
IN NS ns2.dansfishtanks.com.
; mail domain mail servers
IN MX mail.danfishtanks.com.com.
; A records for name servers above
ns1 IN A 1.2.3.4
ns2 IN A 1.2.3.5
; A record for mail server above
mail IN A 192.168.0.5

Now add our name servers records:
IN NS ns1.no-ip.com.
IN NS ns2.no-ip.com.
IN NS ns3.no-ip.com.
IN NS ns4.no-ip.com.
IN NS ns5.no-ip.com.

Your zone file will look like this: (don’t forget to update the serial number!)

$TTL 2d ; default TTL is 2 days
$ORIGIN example.com.
@ IN SOA ns1.dansfishtanks.com. hostmaster.dansfishtanks.com. (
2003080801 ; serial number
2h ; refresh = 2 hours
15M ; update retry = 15 minutes
3W12h ; expiry = 3 weeks + 12 hours
2h20M ; minimum = 2 hours + 20 minutes
)
; main domain name servers
IN NS ns1.dansfishtanks.com.
IN NS ns2.dansfishtanks.com.
IN NS ns1.no-ip.com.
IN NS ns2.no-ip.com.
IN NS ns3.no-ip.com.
IN NS ns4.no-ip.com.
IN NS ns5.no-ip.com.

; mail domain mail servers
IN MX mail.danfishtanks.com.
; A records for name servers above
ns1 IN A 1.2.3.4
ns2 IN A 1.2.3.5
; A record for mail server above
mail IN A 192.168.0.5

4. Don’t forget the glue! Last step is to tell the root servers where to look. This is done at your registrar. If your domain registration is with No-IP, (Your domain isn’t registered with us?! Transfer it today!)

5. Enjoy Peace of Mind! You’ve just increased your DNS presence 10 fold. Just make sure you keep your email address current with No-IP so that you can get important
maintenance notifications of changes on our end that may require action on your part (in the rare event of IP address changes)

This example uses BIND. Very similar actions are needed for other servers such as NSD or Microsoft DNS server.

Any questions? Please do not hesitate to ask for help. Give us a call or open a Support Ticket.

[HOW TO] Secure Your Wireless Network

Let’s face it, we have all (or at least I have) jumped onto an unprotected WI-Fi network. When I was in college, I even considered knocking on my neighbors door (whose network was secure) to ask if they wanted to share a network and split the cost, but what would the dangers of that had been? And what are the dangers of not having your own network secure? Well, for starters, my neighbors could have been wrongfully accused of things if I were looking at or doing illegal things online, (I wasn’t and don’t), but if I had, the feds could have knocked on their door one day, like when this guy got busted for downloading images he hadn’t downloaded.

Also, unprotected wireless networks, also set you up for vulnerabilities on your computers.  Your files could be stolen, or your private info (such as bank information, passwords, etc.) could be stolen as well.

The only way to protect yourself from this happening, is to secure your wireless network. Follow these steps and you should be all set.

1. Open your router settings. This is typically done by typing “192.168.1.1” into your browser.
Once the page loads, you will need to login to the admin settings, the generic login/password is different depending on the router brand that you are using, so check out the directions manual that came with the router to determine yours. The most common defaults are admin / password.

2. Change your router password. This is the password that we just talked about. (10 Tips for Choosing a Safe Password) If you forget to change this, your network is still accessible.  Anyone can login to your router and change your settings. This is a step that many forget to do, but it is definitely one of the most important.

3. Next, change the name of your wireless network. Do not name the network after the router aka Belkin. Also, do not use your own name, home address or other personal information when naming your network. You can name your network something funny or just something easy to remember, either way, it’s not that important, but it just let’s you and others know what network they are connecting to.

4. Encrypt Your Wireless Signal: Network encryption is important. It prevents other computers in your area from using your wireless signal. The newest form of encryption is called WPA2, use this if you have the option, otherwise WPA will suffice.  (WEP is the older, less secure version: i.e very easy to hack, stay away from WEP if at all possible) Choose a password that is up to 14 characters long, a combination of letters and numbers.

5. Make sure your router’s firmware is up-to-date. Possible security flaws will be easily avoided if your routers firmware is current.

Any other recommendations for securing a wireless network? Leave them below in the comments! And as always, be sure to share this article with all of your friends on Facebook and Twitter!

Feeling Lucky? Enter our Giveaway!

Head over to our Facebook page for a chance to win a No-IP T-shirt or a free domain registration and a year of No-IP Plus DNS, during our giveaway!

Just Suffered an Earthquake? Make Sure Your DNS is Diversified.

As “earthquake on East Coast” and “earthquake” searches soar on Google, now is a great time to focus on the importance of having your DNS hosted in many geographically diverse locations. Companies should now be thinking about the “What-If?” scenarios.

What If:
Your DNS is only hosted in one location and mother nature decides to wake up on the wrong side of the bed?
Your website was down for an hour, a day, a week? What would this mean to your business?
Your companies email system just stopped working?

DNS is an essential part of the Internet.  If your web servers are only hosted in one location, and something happens, your entire website can be wiped out. Having DNS that is hosted in many geographically diverse locations means that even if the unthinkable happens, your customers will still be able to reach your site.

The location of DNS servers is important in ensuring 100% uptime. We deploy name servers across the globe at geographically unique datacenters using different tier 1 bandwidth providers to ensure a natural disaster or connectivity outage does not disrupt our robust DNS network. Check out No-IP Plus DNS for more information.

Have you or your business ever been affected by a DNS outage? Share your thoughts below!

[TIP] 6 Cool Ways College Students Can Use DNS

1. Research Faster and More Efficiently: Faster internet browsing for all of those last minute term papers. Sites hosted with reliable DNS will always be available when you need them most.

2. Get Better Grades: Forgot your term paper at home that’s due in 15 minutes? Don’t use the “dog ate my homework” excuse, log in to your computer from school, access your files and viola! Crisis averted.

3. Play Video Games With Your Friends From Home: Far away from all of your video game buddies from home? Wipe those tears away, because with DDNS you can run your own game server on your dynamic IP from your dorm room!

4. Be the Life of the Party: At a party with really lame music, but forgot your IPod? Be the hit of the party by accessing your entire music library on the go! (Just make sure you don’t play the YMCA.)

5. Sharing is Caring: Live in an apartment with multiple computers? Want to easily share files, music and movies? Create your own VPN server in your apartment or dorm.

6. Save Money: Food disappearing quicker than usual? Do you suspect that your roommate is secretly munching all of your Cheetos at 2am? Set up a security camera and catch the culprit red (er orange?) handed! Just make sure you keep the camera rated G by not installing them in a bathroom, bedroom, or other places where people expect privacy.

Other tips and ideas on ways college students can use DNS ? Add them below! And check out our website to learn about our awesome DNS products.

Internet Privacy May Soon be a Thing of the Past

Have you heard about H.R. 1981: The Protecting Children from Internet Pornographers Act of 2011? If not, listen up, because this is a very important bill that is quietly making it’s way through approval as I type. With a name like that, who would possibly oppose, everyone wants to keep children safe. The only problem is that this act encompasses much more than child pornography, it encompasses everyone’s ENTIRE internet privacy.

Under this act, every ISP would be required to track everyone’s online activity including your name, address, phone number, credit card numbers, bank account numbers, and  temporarily-assigned IP addresses, and save it for a minimum of 18 months. So basically, the government would be assuming that everyone is a criminal and they are just waiting for you to break the law. The equivalent of this bill is the government having someone follow you everywhere, everyday of you life and record it just in case one day you decide to rob a bank, or kill someone.  Could you imagine???

California Rep. Zoe Lofgren’s recently proposed to rename the act “Keep Every American’s Digital Data for Submission to the Federal Government Without a Warrant Act of 2011.”

Why rename it that? Well Rep. Lofgren’s new title explains it all, once the ISP has your entire online footprint saved, all it takes for that information to be subpoenaed is an inkling that you have done something wrong.  You don’t have to be under investigation for child pornography charges, simply being suspected is enough.

Which brings up another skeptical situation, what if you are undergoing a child custody battle, or a divorce, or anything?! Yup, your history can be subpenaed and you know how? No warrant is necessary, all they have to do is ASK.  No probable cause is necessary, nice.

This act has successfully made its way through the House Judiciary Committee and it’s next stop is a vote by the House. You can track the status of the act here.

What can you do? If you oppose this legislation, you can go to the Electronic Frontier Foundation and fill out an easy form to contact your state representative.

So, do you agree or disagree with the legislation? Leave your comments below!

10 Tips for Choosing a Safe Password

Choosing a password is easy, choosing a password that is safe is a different story. Follow these 10 tips for choosing a safe password to safeguard all of your accounts from fraud.

1. Choose a password with mixed-case letters, numbers and symbols (example: !, $, #, %).
2. Choose a password that is NOT related to anything that has special meaning to you, ie: your pets name, birthday, address, family members names, etc.
3. Use a different password for every account that you have. This one is tough, I know, but it will definitely come in handy if one of your accounts get compromised. Multiple passwords will ensure that your other accounts remain safe.
4. Change your passwords frequently (every 3 months or so) and when you change your password, don’t choose a new one that is similar to the old one.
5. Don’t use a word that is found in the dictionary.
6. Make your password 8 characters or longer.
7. Use a virtual keyboard when entering passwords. A virtual keyboard won’t let a keylogger program capture your keystrokes.
8. Use a string of words.
9. Pick a word that you can type quickly and easily remember without having to look it up.
10. Make sure you can easily remember it! Yesterday, I changed my email password, and twenty minutes later I had already forgotten it. I had to go through 10 steps to recover my account (my recovery email was old and outdated, so that didn’t help me either). Not very fun. So, save yourself the headaches and use a password manager to securely store all of your passwords. Also, keep your account information up-to-date. So, if you do forget your password, it’s just a click away to a different email address.

What are your top tips for choosing a safe password? Add yours below!

DNS, What???

More often than not, when I tell people what the company that I work for does, they look at me with a blank stare and a trivial look on their face and say DNS, What… They still seem utterly confused after I try to explain what DNS is and how they are most likely using it everyday.  These people usually just pretend like they get it and walk away, but do they really get it and what’s so hard to “get”?

We have touched on what DNS is quite a few times, but we still get the inevitable comments on surveys and blog posts that people are still very confused.  One person actually compared DNS to buying a bottle of air, open it and there is nothing inside, but that couldn’t be further from the truth!

DNS redirects an IP address, to a static domain name.  So if you want to visit www.no-ip.com, you type the domain name into your browser, not the IP address.  If not for DNS, you would have to remember every IP address of every website! With over 300 million websites on the web, remembering every IP address would be utterly impossible, well unless maybe you’re Kim Peek: The Real Rain Man.

In addition, the transition to IPv6 will make remembering IP addresses even harder! IPv6 addresses are 128 bits long compared to 32 bits of Ipv4 addresses.

They look something like this: 2001:db8:0:1234:0:567:8:1. That’s a lot if numbers to remember! (I can barely remember my phone number!)

So, next time someone asks you, WHAT the heck is DNS?! You can tell them that it is indeed more than just bottle air.  It makes visiting websites by a domain name, possible!

Have you ever had someone look at you confused when you mention DNS? Also, if you like this article, be sure to share it with your friends via Facebook and Twitter!

What is the Difference Between a CNAME Record, A Record, and Redirect?

An A record is the actual record. The name is resolved to the corresponding IP address.

An example of this is www.no-ip.com resolves to 204.16.252.112

CNAME records (short for short for canonical name) map your hostname to another hostname. It is useful for pointing many hosts to the same place and updating them easily.

An example of this is:

www.no-ip.com to www.noip.com

This is a CNAME record because even though the domains are different, they still go to exactly the same place and follow the same rules that are in place.

Redirects are like CNAME records in a way, but different.  Use a redirect if you want one domain to redirect to another.

An example of this is:

www.yourwebsite.com redirects to yourblog.blog.com

Have questions or comments about CNAME records, A records or redirects? Leave them below.

Want to know more about No-IP’s services? Check out our website to learn more.

No-IP Upgrades

No-IP engineers have been working hard making tons of No-IP upgrades!

Over the past few months, we have upgraded our network hardware and servers and have added more load balancers to balance traffic more efficiently.  This quarter of a million dollar expansion will bring a quicker, more reliable  service to you that is able to transmit and handle a much higher load of capacity!

To our 11 million users,  thanks again for choosing us!!! We hope you like all of the No-IP Upgrades!