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admin | Category: Phone Book Lookup | 09.11.2015
REVERSE DNS LOOKUP DIG women getting stoned to death video, marilyn monroe quotes about lovers, subaru forester turbo engine, marilyn monroe quotes and sayings about love, reverse dns failed this is a problem. The Domain Name System (DNS) is vital to keeping the Internet in order and easily accessible. There are plenty of resources available online to explain How DNS Works, so in this post, we'll focus on the basics of how we use DNS.
Each of these options has its own pros and cons, but because we're just interested in getting our domain online, we'll use SoftLayer's DNS control panel to manage our new domain name. Host: This is the host node or owner name — the name of the node that this record applies to.
TTL (Time-to-Live): TTL dictates how long your name server should keep a particular record before refreshing for possible updates.
The last step we want to take in setting up our domain is to create Reverse DNS (rDNS) records. DNS is a central piece of the Internet as we know it, so by understanding how to use it, you'll have a much better understanding of how the Internet works. As a technical support specialist at SoftLayer, I work with new customers regularly, and after fielding a lot of the same kinds of questions about setting up a new server, I thought I'd put together a quick guide that could be a resource for other new customers who are interested in implementing a few best practices when it comes to setting up and securing a new server.
Write down your passwords: "If I write them down and then protect the piece of paper — or whatever it is I wrote them down on — there is nothing wrong with that. SoftLayer customers should be sure to allow SoftLayer IP ranges through the firewall so we can better support you when you have questions or need help.
A hostname is the human-readable label you assign of your server to help you differentiate it from your other devices. Avoid using "www" at the beginning of a hostname because it may conflict with a website on your server. If you buy your domain name from SoftLayer, it is automatically added to our nameservers, but if your domain was registered externally, you'll need to go through a few additional steps to ensure your domain resolves correctly on our servers.
Many ISPs configure their servers that receive email to lookup the IP address of the domain in a sender's email address (a reverse DNS check) to see that the domain name matches the email server's host name. Now that you've prepared your server and protected your data, you are ready to migrate your content to its new home.
If you have any questions about setting up your new server or you need any help with your SoftLayer account, remember that we're only a phone call away! In the last couple of days, there's been a bit of buzz about "open DNS resolvers" and DNS amplification DDoS attacks, and SoftLayer's name has been brought up a few times. The majority of SoftLayer's infrastructure is made up of self-managed dedicated and cloud servers.
It's all too common to find those DNS resolvers open and ultimately vulnerable to DNS amplification attacks, and whenever our team is alerted to that vulnerability on our network, we make our customers aware of it. CloudFlare effectively became a honeypot, and they caught a distributed DNS amplification DoS attack.
If you have a DNS server on the SoftLayer network, and you're not sure whether it's configured to prevent it from being used for these types of attacks, our support team is happy to help you out. If, on the other hand, you have your own DNS server and you don't want to worry about all of this configuration or administration, SoftLayer operates private DNS resolvers that are limited to our announced IP space. Late Friday afternoon, Judiciary Committee Chairman Lamar Smith announced that the DNS-blocking provisions would be removed from SOPA, and on Saturday, The White House responded to in opposition to the the bills as they stand today. I only mention this because it's important not to forget that SOPA isn't dead, and it's still very dangerous.
The Internet's outrage against SOPA has brought about real change in our nation's capital: The House is reconsidering the bill, and they'll hopefully dismiss it. Last week, I explained SoftLayer's stance against SOPA and mentioned that SOPA would essentially require service providers like SoftLayer to "break the Internet" in response to reports of "infringing sites." The technical readers in our audience probably acknowledged the point and moved on, but our non-technical readers (and some representatives in Congress) might have gotten a little confused by the references to DNS, domains and IP addresses.
When the requested content is located (and generated by other servers if necessary), it is returned to your browser. Your browser takes that code and translates the formatting and content to be displayed on your screen. The HTML code will reference sources for media that may be hosted on other servers, so the browser will perform the necessary additional requests to get all of the media the website is trying to show. When the HTML is rendered and the media is loaded, your browser will probably note that it is "Done," and you will have successfully navigated to SoftLayer's homepage. One additional method of screening domains would happen at the level of the operator of the domain's gTLD. If the gTLD registry operator, your ISP and the domain's authoritative name server provider agree that the site you're accessing has not been reported as an infringing site, the process would resume the pre-SOPA process. I often get asked “what makes SoftLayer different?” The problem with that simple question is – SoftLayer is so different from all the competition out there that it’s not a simple question to answer. SoftLayer has downloadable iPhone, Android and Blackberry apps in addition to our mobile phone friendly .mobi site for complete control. On the end-user side, I just read an article about how public DNS providers like OpenDNS and Google are breaking the internet.


The summary is that some CDN algorithms use the ip address (and location) of the DNS server making the request and if that DNS server is nowhere near the end-user on the internet, the end-user will get served content from farther away and will get that content slower than desired. SoftLayer has built out authoritative DNS farms in all our Datacenters and Network POPs and anycasted the ip addresses for the name servers.
One very important goal of every content provider is to get the end-user the best experience as possible. If you've been around the Internet awhile you've probably heard of the Domain Name Service. Copyright © 2012 Autos Weblog, All trademarks are the property of the respective trademark owners. Once we go through the ordering process, we'll need to associate the domain with a set of authoritative name servers. Generally speaking, longer TTLs work well if you’re just adding new entries and or don’t anticipate frequent record changes. Because these DNS changes have to propagate across our DNS servers to be accessible to the Internet as a whole, the process typically takes 24-48 hours, if not sooner. These records do the same thing as DNS records, but (as the name suggests) they function in the opposite direction.
It seems challenging at first glance, but as you see from this simple walkthrough, when you break down and understand each step, you won't get overwhelmed. That allows us to remember more passwords and better passwords." "We're all good at securing small pieces of paper. With such strong, random passwords, you don't have to change your password frequently, but if you have to, you don't have to worry about remembering the new one or updating all of your notes. Configuring a firewall manually can get very complicated, especially when involving protocols like FTP which opens random ports on either the client or the server.
Beyond blocking and allowing IP addresses, it's also important to lock down the ports on your server. A hostname should resolve to its server's main IP address, and the IP should resolve back to the hostname via a PTR record. The CloudFlare blog and the Ars Technica post presuppose that the presence of open recursive DNS resolvers is a sign of negligence on the part of the network provider at best and maliciousness at worst, and that's not the case.
Customers who rent those servers on a monthly basis have unrestricted access to operate their servers in any way they'd like as long as that activity meets our acceptable use policy. In turn, they may pass the word down the customer-of-customer chain to get to the DNS owner. The results they gathered are extremely valuable to teams like mine at SoftLayer, so if they go the next step to actively contact the abuse channel for each of the network providers in their list, I hope that each of the other providers will jump on that information as I know my team will. For those of you interested in doing a little DNS homework to learn more, Google's Developer Network has an awesome overview of DNS security threats and mitigations which gives an overview of potential attacks and preventative measures you can take.
In response to the Stop Online Piracy Act (SOPA) in the House of Representatives and the Protect IP Act (PIPA) in the Senate, some of the most popular sites on the web have gone dark today – demonstrating the danger (and the potential unchecked power) of these two bills. If you visit sites like reddit, Wikipedia, Mozilla and Boing Boing today (January 18, 2012), you experience the potential impact of the legislation. With our collective momentum, we need to look at the PROTECT IP Act (PIPA, or Senate Bill 968) – a similar bill with similarly harmful implications that's been sneaking around in SOPA's shadow.
Both require a form of essentially breaking a core aspect of how the Internet functions – whether that breakage happens in DNS (as detailed in my last blog post) or in the required rearchitecture of the way any site that accepts user-generated content has to respond to PIPA-related complaints. It is important that you voice your opinion with your government representatives and let them know about your opposition to both SOPA and PIPA. And given the significance of the SOPA legislation, you should understand where the bill would "break" the process.
Domains are typically required to be associated with two or three name servers to ensure if one is unreachable, requests for that domain name can be processed by another. When a domain name is purchased and provisioned, the owner will associate that domain name with an authoritative DNS name server, and a DNS record will be created with that name server linking the domain to a specific IP address. Multiple domains can be hosted on the same IP address, just as multiple people can live at the same street address and answer the phone. Depending on what content you are accessing, the response from the server can be very simple or very complex. Often, formatting and styling of pages will be generated from a Cascading Style Sheet (CSS) referenced in the HTML code.
If your ISP can't find any reference to the domain an infringing site, it would start looking for the name server to deliver the IP address. If an ISP sends a request for an infringing site to the name server for that site, the provider of that name server would be forced to prevent the IP address from being returned. If a site is reported to be an infringing site, service providers have to do everything in their power to prevent users from getting there. If you flip this around and come at DNS from the content provider’s point of view who doesn’t use CDN, you want to make sure that when a DNS request is made, that your authoritative DNS server gets the ip address as fast and reliably as possible back to the end-user.
DNS translates the domain names you know and love to the correct IP addresses, so without DNS, you would have to memorize a 32-bit or 128-bit IP address for your favorite websites.


Every domain registrar effectively provides the same service: It will reserve an available domain on your behalf, and it will let you dictate where that domain will live. A wealth of DNS tools and tutorials are available for free online, and our DNS documentation might be a great resource to bookmark so you'll never get lost in domain translation.
Don't change it to a weak password using names, birthdays and other trivia that can be found or guessed easily. There are a lot of great SSH clients available for every medium you'll use to access your server. I've seen some pretty awesome hostname naming conventions over the years (Simpsons characters, Greek gods, superheros), so if you aren't going to go with a traditional naming convention, you can get creative and have some fun with it.
Next, Add a DNS Zone, then add an A record corresponding to the hostname you chose earlier. In Terminal.app (Mac) or Command Prompt (Windows), type "nslookup" command followed by the IP. These tips aren't meant to be a one-size-fits-all, "set it and forget it" solution; they're simply important aspects to consider when you get started with a new server.
SoftLayer's AS numbers (SOFTLAYER and the legacy THEPLANET-AS number) show up on the top ten "worst offenders" list, and Dan Goodin contacted us to get a comment for a follow-up piece on Ars Technica — Meet the network operators helping to fuel the spike in big DDoS attacks. Some of our largest customers are hosting resellers who provide that control to their customers who can then provide that control to their own customers. If you're just looking for an easy way to close an open recursor, scroll to the bottom of CloudFlare's post, and follow their quick guide. After digging into the details, it was revealed that SOPA being "shelved" just meant that it is being temporarily put to sleep. Let's take a high level look at how the Internet works, and from there, we can contrast how it would work if SOPA were to pass. You are connected to the Internet through an Internet Service Provider (ISP) which recognizes that you will be accessing various sites and services hosted remotely. The purpose of the style sheet is to streamline a given page's code and consolidate the formatting to be used and referenced by multiple pages of a given website. Each gTLD is managed by a large registry organization, and a gTLD's operator would be required to prevent an infringing site's domain from functioning properly. It's a relatively complex process, but it's a process that guarantees us the ability to investigate claims for legitimacy and to hear from our customers (who hear from their customers) in response to the claims. There's not a lot of differentiation or value-add in that service, so many registrars offer cheap or free domains as loss-leaders for higher margin hosting or Web services.
By default, your domain registrar will provide name servers for your domain, but they can be changed easily to meet your needs.
This step isn't required, but I recommend it to help ensure better performance of online activities like email and website visitor tracking.
An old adage says, "It's better to have and not need, than to need and not have." Imagine what would happen to your business if you lost just some of your data. The opposite of an A record is a PTR record: PTR records resolve an IP address to a domain name. A server's hostname can be changed in the customer portal and in the server's control panel. You probably noticed that I alluded to control panels quite a few times in this post, and that's for good reason: If you don't feel comfortable with all of the ins and outs of server administration, control panels are extremely valuable resources that do a lot of the heavy lifting for you.
And if 23 million hostnames reside on the SoftLayer network, you can bet that we've got a lot of users hosting their DNS on SoftLayer infrastructure. It's a question of whether the DNS owner has any idea that their "configuration" is vulnerable to be abused in this way. Instead of sending a huge amount of traffic from a single domain, they send a marginal amount of traffic from a large number of machines, and the "abusive" traffic is nearly impossible for even the DNS owner to differentiate from "regular" traffic. In other cases, the content you access may require additional information from other servers (database servers, storage servers, etc.) before the request can be completely fulfilled. Be sure to check the fine print to make sure you're not committing to a year of hosting to get a $0.99 domain name. For more information, we have a great KnowledgeLayer article about planning ahead for an SSL, and there's plenty of documentation on how to manage SSL certificates in cPanel and Plesk.
Some registrars make the process of updating and configuring where a domain resolves more difficult than others, but for the sake of this example we'll assume that your registrar allows the same easy accessibility SoftLayer provides our customers in the customer portal. SoftLayer does not backup your server, but SoftLayer offers several options for data protection and backup to fit any of your needs.



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