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  • How to intercept and manipulate DNS queries?

    - by emtunc
    I'm not sure if I worded the question correctly to be honest but basically what I want to do is: When a user types in something like Expenses in the URL bar of a browser, I want the browser to be directed to a specific web address (very very similar to how OpenDNS shortcuts work) The IP address of the web address will not change amongst the different 'shortcuts'... i.e: mycompany.com = 10.0.0.0 mycompany.com/expenses = 10.0.0.0 mycompany.com/tracker = 10.0.0.0 When a user types expenses in the browser address bar and presses enter, I want the browser to automatically direct to the specified address as above. Would this be tricky to implement? I hope I have put my question forward appropriately :-) Additional notes: We are on a Windows envionment I believe the exchange server is running as the DNS server in the office

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  • Lan DNS not working after reinstall of Ubuntu 13.10

    - by DrorCohen
    I upgrade my Ubuntu desktop to 13.10. When I say upgrade I mean installed on a new partition from scratch (old partition is available if To the problem: I'm trying to ping a host (Drobo-FS server) by it's host name. I get "Unknown Host". However pinging from another computer on the same lan - works fine (a laptop with 12.04 lts). for that matter every ping from the 13.10 to the local lan by hostname fails, ping with ip works. I don't have a local DNS server but somehow all the other computers in the network find each other by host name - only this new one fails... help appreciated...

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  • Adding Internal DNS server in Host file

    - by Param
    I have added Global DNS server ip address to one of my Desktop ( please see the Network configuration screenshot ). and after that i have added my both domain controller ip address in host file, and it is working fine. ( please see the below screen-shot for your reference ) Can you please guide, what problem can i face if i kept my configuration in this way. but i am wondering, can this setting can create a problem? because the computer will be able to reach corp.abc.com easily, with the help of host file.

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  • Running a home mail server using dynamic dns

    - by user4009
    Hi, Is it possible to run an email server on my home box using dynamic dns? The scenario is, I want to auto cc all incoming and outgoing emails from my one account to another, from some server side config instead of configuring email clients for rules. I have tried Google Apps Mail but it doesn't allow auto cc of outgoing emails. After having read tons of blogs, forum messages etc (hope I have been reading the correct info :) ) the only option to achieve what I am needing is to setup my own mail server, but the cost of getting a static IP doesn't fit my budget. Please can someone point me in the correct direction. Platform doesn't matter, I can setup a Windows or Linux server. Many Thanks

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  • DNS for route between WAN & LAN

    - by David Maitland
    I have a few machines set up on my internal 192.168.1.* network and i have one public ip, my router is links all ports to on internal linux machine on my network 192.168.1.3. I want to know how to configure the DNS server on my linux box to forward to internal LAN ip's depending on the host name. EG. computer4.83.22.56.12 would find my box then forward to 192.168.1.4 on the local network. This is so i can run multiple web server under one ip. btw, i use Ubuntu. Thanks Dave

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  • Network Share unavailable after DNS Change

    - by Justin Largey
    Hi, I have a server, called Server1 with various network shares on it. Our users map to this share using \\Server1\FileShareName1. During a DR Test, we rerouted all network traffic from Server1 to Server21. All folder shares are set up on Server21. We were hoping the the network shares would still be accessible using \\Server1\FileNameShare1, unfortunately, they are not. Does anyone know why this is happening? This is a Win2003 Environment, and DNS was flushed. I confirmed that IP addresses are matching between the two servers. Any help or insight is much appreciated.

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  • DNS issues on my iPhone

    - by mattalexx
    I'm trying to call up "https://m.google.com" on my iPhone on my home WiFi. It's saying Safari "cannot verify server identity" of m.google.com, then when I press Details, it refers to https://m.google.com as "mattserver". "mattserver" is the name of my development server, a Linux box on my home network. This stinks of DNS issues to me. Accessing the unsecure version of that URL ("http://m.google.com") gives me a blank page. What could be going on here? Is there a way to look at the logs of my router somehow?

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  • Override some DNS records and delegate others to another nameserver

    - by Addev
    I'm starting playing with nameservers. Currently I have: A domain: mydomain.com Access for writing the whois ns records. Access for writing DNS records at the domain hosting provider. nsX.foo.com A shared (hostC) hosting which cPanel writes in the nameserver of nsX.bar.com Basically I want the following structure: hostA.mydomain.com -> hostA hostB.mydomain.com -> hostB hostC.mydomain.com -> hostC mydomain.com -> hostC *.mydomain.com -> hostC Whats the correct way of configuring this? By the way I have configured the following records hostA.mydomain.com IN A [IP_OF_hostA] (at foo.com nameservers) hostB.mydomain.com IN A [IP_OF_hostB] (at foo.com nameserver) But now I dont know how to specify that @.mydomain.com and *.mydomain.com are resolved by the ns1.bar.com and ns2.bar.com, and it is hard to try with the delays after editing the records.

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  • Wrong Connection-specific DNS Suffix

    - by mydoghasworms
    I am on a Windows network with a Windows 7 machine. For some strange reason, when I run ipconfig, I see that I have the wrong DNS suffix for my network adapters, e.g. def.companyname.com as oppsed to abc.companyname.com. My colleagues next to me, who are on the same network, have the correct suffix. Where does the problem originate, and is it something I can fix on my machine (and if so, how?), or is this something a network administrator must resolve? (I did ipconfig /release and /renew, but that did not help).

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  • Confusion about DNS for mail server

    - by Tyron Gower
    We have migrated to Office365, everything is working except one company cannot email us as its connecting to our subdomains email server. So, We have companionsoftware.com.au hosted through office365 and all the required DNS entries. All seems to be working fine. We then have a web server hosting our website companionsoftware.com.au and our subdomain email attachments.companionsoftware.com.au (pop3/smtp). now for this one company when they try and email [email protected] it's connecting to STMP on attachments.companionsoftware.com.au. Now attachments.companionsoftware.com.au and companionsoftware.com.au have the same ip address, but this is only affecting one person (that we know of) when they try and email us. Have i configured something wrong or is it their server?

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  • Domain Hosting, DNS/NS Management [closed]

    - by ledy
    What criteria do you have for choosing the right provider for registering a domain? (not hosting, only the domain) So far, I can only see the different pricing and features of the DNS manager but have no idea what I have to pay attention in addition to this. How to know about the quality of the provider's nameserver and could there be differences in speed concerns. Background: The hosting itself incl. webspace, server etc. is separate from the domain and I am not going to book the domain with the same hoster as the webspace/server hoster.

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  • Server 2012r2 VPN DNS

    - by Tyron Gower
    Have an issue where onsite clients cannot resolve VPNusers. but VPN users can resolve onsite machines. example. USER! uses LAPTOP1 USER1 connects to VPN gets internal IP address of 10.243.0.200 USER1 pings SERVER1 - resolve to ip and gets reply USER1 RDP into SERVER1 (inside VPN) USER1 pings LAPTOP1 from SERVER1 resolves to ip address last assigned by DHCP (10.243.0.139) ping fails USER1 pings 10.243.0.200 from SERVER1 gets reply. Running Server 2012r2 It is a domain controller, DNS and VPN server. VPN is just configured with basic default settings. All VPN users have static IP setup in AD. Not sure where to go from here.

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  • Best DNS Hosting?

    - by Jon Tackabury
    I am looking at setting up another dedicated hosting machine, and I would like to keep the DNS off of this box. When you host your projects do you just use the DNS provided by your name registrar/web host, or have you used an 3rd party DNS services? Who have you had good luck with?

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  • C-library consists of asynchronous DNS resolver

    - by egiakoum1984
    Need to find a asynchronous DNS resolver implemented in C (except Sofia Resolver) which supports DNS queries for NAPTR, SRV and A records. It would be desired to support internal caching. Any suggestions/recommendations? Currently looking at ldns which supports NAPTR, SVC and A queries. But, If I have understood correctly, it is not asynch DNS resolver.

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  • DNS protocol message example

    - by virtual-lab
    hello there, I am trying to figure out how to send out DNS messages from an application socket adapter to a DNSBL. I spent the last two days understanding the basics, including experimenting with WireShark to catch an example of message exchanged. Now I would like to query the DNS without using dig or host command (I'm using Ubuntu); how can I perform this action at low level, without the help of these tools in wrapping the request in a proper DNS message format? How the message should be post it? Hex or String? Thanks in advance for any help. Regards Alessandro Ilardo Comment added I am investigating on JDev and Oracle SOA. The platform provides a Socket Adapter which simply apply a transformation (XSLT) and send the message straight to the socket. How the payload parameters (ex. the host I'm looking up) are wrapped within the message is left to the developer. So basically I have an idea on how the all DNS message is structured, but rather than put everything on JDev stright away I'd like to make some tests on my own just to make sure I got a valid message format. So, I am not using any specific language (I don't even understand why they moved my question from serverfault) and I don't want to use any tools which would hide part of the message, such as the header. I know they work well btw. I guess this stuff has something to do with packet injection. Someone suggested me to use telnet, but I've only used for SMTP or HTTP, I haven't got a clue on how it works for DNS request. Does it make more sense now?

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  • Multihomed Windows server and DNS resolution

    - by Mike K.
    I have a Windows 2008 server with two IP addresses assigned to a single NIC. The DNS settings are setup to register the connections's addresses on the DNS server. nslookup shows both IP addresses for the server name. How is name resolution done in this case, i.e. which IP address does the DNS server return for a host lookup? Or does it return both, and the client selects one of the addresses?

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  • DNS settings for resolving Host name to IP not working?

    - by Hasas Ali Khan
    I want to access my IIS hosted application over LAN. First I installed a DNS server. The DNS configuration steps are: Go to DNS Manager - right click on System Name - click on configure a DNS Server. DNS Server wizard open -, click on next button - Select radio button "forward lookup zone" click on next button. In the second window. click on radio button "The server maintains the zone" and then click next. Give the zone name "example.com" Click on radio button, "Do Not allow dynamic updates". and then click next button. In the next window, click on radio button "No it should not forward query" and then click next button. Complete the configure a DNS server wizard and then click on finish button. After it is managing the DNS records: In DNS server wizard. open tree of forward lookup zone and right click on the new zone name "example.com" - properties and click on "Start of authority" and write values on text boxes serial number=1 primary server=systemname.domainname responsible person=hostmaster.domainname Click on server name, highlight domain name, click on edit button and enter IP address of the server where I host my application. Highlight new zone name and right click on it and click "New Host" option. In this window there are three text boxes: Name(user parent name if blank)=scoring Fully Qualified Domain Name=scoring.example.com IP Address= My IP Address and check on "Create associated pointer(PTR) record" and click on "Add Host" Host button and then click done button. I have host header for my application is "scoring" on port 80 and its working fine on server my application setting are I have change its, Advance setting --> Application Pool Identity --> Local System application can access on server with host name "scoring" but it can not access on machines on LAN. When I change LAN machine host file that is under, C:/windows/system32/driver/etc/host and edit it and enter host name with hosted machine IP like this: scoring 192.168.1.20 By making these changes I can run the application over LAN machines as I mentioned above DNS setting by which I can run App over LAN with out editing the client's host file. What mistake am I doing in this configuration?

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  • Bind9 DNS help with psuedo domains

    - by Tempname
    I have setup a dns server on my home network to manage some apps that I have written for home. Currently I have 3 "domains" that I am using: controller devserver fileserver The first issue that I am having is that when I attempt to ping the parent domain of any of these 3 I am unable to. I simply get ping: unknown host controller. I however can ping any of the subdomains I have setup for these 3 parent domains. The second issue is I am unable to ping any of the 3 parent domains or any child domains from my window machines. I have verified that these domains work on other devices in my house (ipod touch, ipad, cell phone). Any help with this is greatly appreciated Here is bind data file for my parent domain controller: ; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA controller. admin.controller. ( 9 604800 86400 2419200 604800 ) ; @ IN NS controller. @ IN A 192.168.1.104 controller IN A 192.168.1.194 admin.controller. IN A 192.168.1.104

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  • What are the right reverse PTR, domain keys, and SPF settings for two domains running the same appli

    - by James A. Rosen
    I just read Jeff Atwood's recent post on DNS configuration for email and decided to give it a go on my application. I have a web-app that runs on one server under two different IPs and domain names, on both HTTP and HTTPS for each: <VirtualHost *:80> ServerName foo.org ServerAlias www.foo.org ... </VirtualHost> <VirtualHost 1.2.3.4:443> ServerName foo.org ServerAlias www.foo.org </VirtualHost> <VirtualHost *:80> ServerName bar.org ServerAlias www.bar.org ... </VirtualHost> <VirtualHost 2.3.4.5:443> ServerName bar.org ServerAlias www.bar.org </VirtualHost> I'm using GMail as my SMTP server. Do I need the reverse PTR and SenderID records? If so, do I put the same ones on all of my records (foo.org, www.foo.org, bar.org, www.bar.org, ASPMX.L.GOOGLE.COM, ASPMX2.GOOGLEMAIL.COM, ..)? I'm pretty sure I want the domain-keys records, but I'm not sure which domains to attach them to. The Google mail servers? foo.org and bar.org? Everything?

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  • Trying to configure DNS on a Godaddy Virtual Dedicated host, Mediatemple Domain Registration [closed]

    - by dclowd9901
    A client of mine purchased VD hosting with Godaddy and a domain name with Mediatemple. I've never configured DNS from scratch, and I'm finding it very difficult to find any sort of explanation on how to go about it. As of right now, Mediatemple is pointing to the Godaddy's ns1.domaincontrol.com and ns2.domaincontrol.com nameservers. The VD hosting on Godaddy (via their Simple Control Panel) has options to "Add a new domain", which brings you through a wizard of sorts that asks you if the domain has already been registered (yes), what it is (dclowd9901.com for this example), create a system username and password for it (with checkboxes for SSH and FTP access), which level of user can administer it, and whether a mail account should be setup. When complete, it also creates a zone file. In this zone file, the Primary nameserver is ns1.dclowd9901.com; the records are as follow (where 12.23.12.34 is the presumed host): @ A 12.23.12.34 @ NS ns1 @ NS ns2 ns1 A 12.23.12.34 ns2 A 12.23.12.34 @ MX mail www A 12.23.12.34 ftp A 12.23.12.34 ssh A 12.23.12.34 mail A 12.23.12.34 If anyone can shed any light on this for me, explain to me the interactions between the registrar and the host and so on, I'd be very grateful. Thanks in advance for the help.

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  • DNS Server on Fedora 11

    - by Funky Si
    I recently upgraded my Fedora 10 server to Fedora 11 and am getting the following error in my DNS/named config. named[27685]: not insecure resolving 'fedoraproject.org/A/IN: 212.104.130.65#53 This only shows for certain addresses some are resolved fine and I can ping and browse to them fine, while others produce the error above. This is my named.conf file acl trusted-servers { 192.168.1.10; }; options { directory "/var/named"; forwarders {212.104.130.9 ; 212.104.130.65; }; forward only; allow-transfer { 127.0.0.1; }; # dnssec-enable yes; # dnssec-validation yes; # dnssec-lookaside . trust-anchor dlv.isc.org.; }; # Forward Zone for hughes.lan domain zone "funkygoth" IN { type master; file "funkygoth.zone"; allow-transfer { trusted-servers; }; }; # Reverse Zone for hughes.lan domain zone "1.168.192.in-addr.arpa" IN { type master; file "1.168.192.zone"; }; include "/etc/named.dnssec.keys"; include "/etc/pki/dnssec-keys/dlv/dlv.isc.org.conf"; include "/etc/pki/dnssec-keys//named.dnssec.keys"; include "/etc/pki/dnssec-keys//dlv/dlv.isc.org.conf"; Anyone know what I have set wrong here?

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  • Connection established to google DNS, can't resolve any hosts

    - by Tar
    As you can see from the picture above, I am connected to google DNS but am unable to resolve any hostnames. When I try to ping sites like google.com, yahoo.com, etc, I get 'ping: unknown host'. Yes, I am able to ping localhost, I am able to ping hostname.domain.com, but not domain.com. I can't ping my nameservers. I can ping all hosts by IP address and that works. The output of my /etc/resolv.conf: nameserver 8.8.8.8 nameserver 8.8.4.4 Anyone know what the problem could be? 23:30:04.304955 IP my_server.44457 > 8.8.8.8.domain: 28349+ A? google.com. (28) 23:30:06.137985 IP 112.100.0.78.19781 > my_server.domain: 18717 [1au] A? www.my_domain.com. (46) 23:30:06.138286 IP my_server.domain > 112.100.0.78.19781: 18717*- 2/0/1 CNAME my_domain.com., A my_server (76) 23:30:06.686582 IP 112.100.0.74.19181 > my_server.domain: 65046 [1au] A? my_domain.com. (42) 23:30:06.686811 IP my_server.domain > 112.100.0.74.19181: 65046*- 1/0/1 A my_server (58) 23:30:07.043764 IP my_server.50465 > 4.2.2.1.domain: 13865+ PTR? 142.254.22.67.in-addr.arpa. (44) 23:30:09.065904 IP my_server.45242 > 8.8.4.4.domain: 29011+ PTR? 123.72.117.130.in-addr.arpa. (45) 23:30:09.310021 IP my_server.45440 > 8.8.4.4.domain: 28349+ A? google.com. (28)

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  • BIND9 DNS Problems - Not resolving

    - by clone1018
    I host a BIND9 DNS server for my VirtualMin users to use. And It only resolves for 75% of the people. It has been WELL over 1 week now. Here is a sample. $ttl 38400 @ IN SOA axxim.net. root.axxim.net. ( 1274031391 10800 3600 604800 38400 ) @ IN NS axxim.net. day7tech.com. IN A 96.226.216.37 www.day7tech.com. IN A 96.226.216.37 ftp.day7tech.com. IN A 96.226.216.37 m.day7tech.com. IN A 96.226.216.37 localhost.day7tech.com. IN A 127.0.0.1 webmail.day7tech.com. IN A 96.226.216.37 admin.day7tech.com. IN A 96.226.216.37 mail.day7tech.com. IN A 96.226.216.37 day7tech.com. IN MX 5 mail.day7tech.com.

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  • Web filtering (Proxy or DNS) with option for users to ignore the block

    - by Jon Rhoades
    We are struggling with our users visiting infected or "attack" sites and Phising in general. Most of our machines are protected by an Enterprise anti virus and monitoring solution (McAffe ePO) and we try to get people to use Firefox... But no AV is perfect and we have to endure personal machines as well (albeit on their own 'Plague' VLANs) and would like to do something about Phishing as our users seem intent on disclosing their passwords to the world... To complicate matters we don't want to implement a block for many many reasons instead we would like to implement something akin to Firefox's "Reported Scam/Phish/Attack Site" - "Get me out of here" or crucially "Let me in anyway", giving the user a choice to still infect themselves if they feel like it (or look at a site incorrectly blacklisted). The reason we can't just use Firefox is we have a core enterprise App only certified on IE6&7 - thank you Oracle. Is it possible to implement this type of advisory filtering either using a proxy (in our case Squid) or DNS? http://serverfault.com/questions/15801/what-free-options-are-available-for-web-content-filtering http://serverfault.com/questions/47520/open-source-filtering-of-https-traffic Were a good start, but they don't address the advisory aspect of the filtering.

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  • Cannot ping Google Public DNS on 8.8.8.8

    - by Tibor
    I have a weird problem on my Windows 7 (x64) computer. I seem to cannot ping the Google Public DNS on one of its addresses (while the other works fine). The peculiar thing is that it fails with the General failure. error message which usually means that there is a problem with a network adapter/base connectivity and not a timeout as one would expect. I checked my routing tables for any anomalies and I even flushed them but the problem seems unrelated. All the other hosts I tried ping fine (either respond or timeout). If I try to tracert or connect to the address via browser (yes, I know that it doesn't listen on port 80), it also fails instantaneously. The reason I need to ping 8.8.8.8 is that I commonly use it as a test of Internet conectivity due to it being rememberable. The problem occurs no matter where I connect to the Internet (it is a laptop computer). What could be the cause of this anomaly? Note: I use native IPv6 connectivity.

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