I am facing a strange thing when i open some URL. The URL is (www.jobserve.com)
When i open this URL from my home, it opens some web page. Same url if i open from my office network, i get a entirely differnt URL, which is what i want.
Both, my home and office are in same city in India(3 Km. apart!) but somehow from my home network, i get served a entirely different page which is not what i am trying to open.(The page opening up in the office one is desired one. Office network has proxy/firewall which could be shielding the IP address for opening to outside world!).
My question is why is it happening so, because both accesses are happening from same country/city(but different ISPs though!), so there cannot be a country/IP specific host/content served differently than the global content of the same server.
So what could be happening here?
This raised another question in my mind(when i tried to find ip of the server using nslookup and domain name which returned error - "can't find www.jobserve.com/: Non-existent domain"):-
How can i find IP address of the web server using the domain name other than nslookup which is not working for this particular domain/url?
I recall there were some sites which find geographical location of server and show that pictorially, but i am not able to recall the url for that? Does anyone know?
Thanks,
-AD.
Some sites look at the incoming IP address, lookup where it's coming from and then take various actions they think relevant to you - usually, redirecting you to a more-local site.
Of course, lots of sites react if they think they've "seen you before." For example, there may be cookies that tell them something about you. Or, they may be reacting to your browser.
Sometimes, organizations look at the source IP address and if it's coming from a business they may respond differently than if it's from a non-business ("home") IP.
And, sometimes companies intercept IP traffic and edit it in various ways. This is not normally done to web pages, but if your employer isn't happy with your watching porn at work ( -smile- ), they may do something about it! ...China is well known for doing this type of interception...
I work for an UK based company and all my regional settings are UK based. Moreover the internet is itself from UK so all websites act as if I am from UK.
Google.com goes to google.co.uk
virgin, T mobile ads every where
Does this give any idea about why you are getting a different website in office?
For finding the IP address: don't use a slash. Just
nslookup www.jobserve.com
Alternatively, you can use a website like http://www.domaintools.com/ (there are many others, that's just the first one that comes to my mind).
Related
My website suddenly stopped working.
When I search for the domain name in WHOIS websites it is showing the correct server ip address and correct DNS IP address.
I can reach the website by its IP address but somehow when I am trying the domain name in browser its not working and its showing "This site can’t be reached"!
There is no error in my server log.
I tried different browsers and different systems and it is same issue.
I am really confused. Even when I am sending GET requests with Postman to my domain, it not reachable but sending request to IP is working!
whois and DNS resolution are two separate things and one does not imply anything for the other, so in short, except in very specific cases, if you have a DNS resolution problem you should use DNS troubleshooting tools, not the whois and especially not web-based whois (the only relevant whois is the registry one).
Now you are giving so few details that noone can really help.
Among the possible ideas to check and probable problems:
you forgot to renew the domain, your registrar put it on hold or worse deleted it (that you can see in whois)
you did a change in the DNS resolution and now it does not work anymore, use online troubleshooting tools like Zonemaster or DNSViz; alternatively your registrar and/or webhosting company should be able to help (since you are neither giving here the domain name nor details about the troubleshooting you do: for DNS problems, the browser is not the first tool to use, look instead at dig).
in appear that the problem was DNS on our local system. we changed it to 8.8.8.8 and then we could access to our domain!
it's usually because you use an addon domain, not the main domain for hosting orders that are set up on cpanel whm
Here's the situation. Website.com is an ASP site which needs a blog that is to be Wordpress. So the website.com/blog needs to be hosted onto a php-friendly server. The company hosting the ASP site doesn't want to have anything to do with Wordpress so we have to use some of the shared hosting providers.
How do I have the Blog section placed onto an entirely different server? I've heard this is done with CNAME, but I've never used it. Most of the research I've done revolves around subdomains, but I need a subfolder mapping, and there's not much to read about putting subfolders onto different servers with a different IP and everything.
Thanks.
There are a few different options:
you can bring the traffic to your own server and then redirect to
the correct location
you can bring the traffic to your own server and then proxy it to the correct location
you can direct the traffic to the correct location either via full page or an IFRAME type mechanism
Each option has some benefits and drawbacks depending your devs knowledge level and your infrastructure. Regarding subdomains, you could use a combination approach where you, for example, use subdomain.yourdomain.com to point to a server instance (can be the same server or a totally different one) that maps the subdomain.yourdomain.com name to a specific path, usually via Host header.
A CNAME is a function in DNS that says "Whatever thing you wanted to find for this name, use the same thing for that other name instead". When you're working with web stuff the "thing" in there is nearly always an IP address.
That is, what a CNAME can do for you is to say that when a user's web browser tries to look up the IP address for website.com, it will use the IP address for someotherwebsite.com. Note the total absence of anything web-related, like subfolders, in this. CNAMEs work on whole domain names, nothing else. Since you want to serve only a part of the stuff at a particular name from another server, CNAME cannot help you. CNAME is the wrong tool for you problem. Do not taunt happy fun CNAME.
In order to serve website.com/blog from another server than website.com, you pretty much have to do some sort of reverse proxying (where the ASP site's server relays requests between the user and the Wordpress server). It's probably easier and more robust to give the Wordpress site its own name (blog.website.com or something), and redirect to that from website.com/blog, but only you can know if that's politically possible in your case.
There has been a question made towards me recently to do the following:
We have a website with Drupal running in IIS.
On that site is an URL Redirect to a website hosted externally, obviously with a name completely irrelevant to the name of our company.
The question now is the following;
They want to change to URL to a subdomain of our website. Example: from "www.external-site.com" to "www.sub.internal.com" (while still showing content of the external website)
They want the current page of that website to be reflected in the URL bar. So it wouldn't say "www.sub.internal.com", but it would say "www.sub.internal.com/solutions/page1.html" (instead of "www.external-site.com/solutions/page1.html")
It's possible that I forgot another 'condition' but have mentioned before this.
So, if someone visits through our URL Redirect to External-website, it needs to show our subdomain instead of their domain in the URL, AND it needs to show the current page when people start browsing while still using our subdomain in the URL.
Now, I checked the external-website, and it seems that most of the links available are relative links (if this would be any useful information).
Currently, the external website is hosted externally, and will remain to be so for next few years. (I believe we bought the company)
I have been asking around and looking up, and the best possible thing seems to use domain forwarding, but even then it still doesn't seem to comply with the entirety that they asked of me.
I am but a 'simple' .NET programmer, held responsible to do support for anything involving the websites, and I can't say I have extended knowledge about infrastructure. (But I can ask people to do this for me)
Is there anything that could solve this?
Thanks so much!
IIS's URL rewite and Application Request Routing (ARR) combo can help you what you want to achive. Here are few links which may guide you to configure ARR. Please note that these links dont exibit exact solution to your problem however you can take clue from it and fabricate your solution accordingly.
http://www.iis.net/learn/extensions/url-rewrite-module/reverse-proxy-with-url-rewrite-v2-and-application-request-routing
http://www.iis.net/learn/extensions/url-rewrite-module/reverse-proxy-rule-template
It sounds like you'll want to use a full-page iframe: do not redirect but show a page with an "inner page" instead: that inner page is the external web site. That way, users do not see the external site in their URL bar.
http://webdesign.about.com/od/iframes/a/aaiframe.htm
You need to configure the equivalent of Apache Virtual Host with Reverse Proxy on IIS.
See this answers:
https://serverfault.com/a/271030
and
https://stackoverflow.com/a/10003306/2131693
Could it be that my DNS (which was set by my ISP) is making money when I go online?
I know that the 'web-page unavailable, but look at these amazing ads'-pages (when the user tries to reach the wrong address) bring them a little bit of money. But I am interested in another case.
Could it be that they serve me an ad (as pop-up or pop-down) when I go to a completely 'normal' page without consent of the web-page itself? It would be a kind of add-on, you ask for page example.com/foe, the example.com site serves the page foe, but the DNS sends you unrequested a pop-under ad.
Am I paranoid, or is it happening? Note: I know how to block ads, pop-ups/under and so on. I just want to investigate better how DNS services are trying to make a buck (or a cent) here and there.
Not exactly. The way DNS works is straight forward; say you host a web server which you have purchased a domain name of noads.com for. When you purchase that domain name you're going to be setting it to point to the IP address of your server. Now, from your servers you can host ads if you wish, or setup redirects so that when someone requests, "Noads.com/hi" they get an ad proclaiming the wonders of a cereal high in fiber. However, at this point you're past the point of DBS resolution. The request to noads.com was resolved to your IP address. The /hi folder was accessed after that resolution took place and your webserver may have presented the ad or redirected as the programmer of the website chose.
As for your ISP sneaking something in there... It would be very bad for their business, if not a suable offense, to add A records to their DNS server which direct you to an IP other than the one registered. To check that you could use www.checkdomain.com to find what the domain should be, and type in the name of the domain you want to reach. Then use a command line (press your windows key and R to bring up a run prompt, then type CMD and press enter) from there type nslookup . This will show you the IP you SHOULD be directed to and the IP you ARE being directed to.
One last parting thought, DNS is not a random function. Meaning you can't set an "If, then" on it. If you request a website it's always going to go to the same IP. The only reason it wouldn't is if there are multiple host records pointing to different IPs for a single name. I don't believe that is something to worry about, as the ISP servers will point to the official "internet" servers which will be carefully tended and kept free of error.
Hopefully this explains everything to your satisfaction. Please feel free to ask for clarification if something is not clear.
Thanks!
I work for Johns Hopkins University, and our web culture here has been an unruled wilderness for many years. We're trying to get a handle on the enormous number of registered subdomains across our part of the web-universe, and even our IT department is having some trouble tracking down the unabridged list.
Is there a tool or a script that would do this quickly and semi-easily? I'm a developer and would write something but I want to find out if this wheel has been created already.
Alternatively, is there a fancy way to google search, more than just *.jhu.edu or site: .jhu.edu, because those searches turn up tons of sites that use "jhu.edu" in the end of their urls (ex. www.keywordspy.com/organic/domain.aspx?q=cer.jhu.edu)
Thanks for your thoughts on this one!
The Google search site:*.jhu.edu seems to work well for me.
That said, you can also use Wolfram Alpha. Using this search, in the third box click "Subdomains" and then in the new subdomains section that is created click "More".
As #Mark B alluded to in his comment, the only way a domain name (sub or otherwise) has any real value is if a DNS service maps it to a server so that a browser can send it a request. The only way to track down all of the sub-domains is to track down their DNS entries. Thankfully, DNS servers are fairly easy to find, depending on the level of access you have to the network infrastructure and the authoritative DNS server for the parent domain.
If you are able to, you can pull DNS traffic from firewall logs in and around your network. That will let you find DNS servers that are being sent requests for your sub-domains.
Easier though would be to simply follow the DNS trail. The authoritative DNS server for your domain (jhu.edu) will have pointers to the other DNS servers that are authoritative for sub-domains (if your main one is not authoritative already).
If you have access to the domain registrar and have the proper authorization, you should be able to contact technical support and request the zone file or even export it yourself depending on the provider.