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• How to configure QoS on home router

  - by Joril

  I have a USR9105 router and I'd like to configure its QoS to prioritize web traffic (browser) over everything else (e.g. torrents). I'm confused by its interface though: "IP precedence" allows selecting a number from 0 to 7, while "IP type of service" can be one of "Normal Service", "Minimize cost", "Maximize reliability", "Maximize throughput" and "Minimize delay". How should I set it up? Is QoS the wrong solution to avoiding torrents slowing down browsing to a crawl? Should I set up a proxy and traffic shaping instead?

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• Bypass cache for mobile user agents, VARNISH+NGINX+W3CACHE

  - by Mike McGhee

  Right now I'm running Wordpress w/ W3 Cache on nginx with varnish front end. I'm trying to use the WP Touch Pro plugin for wordpress to display mobile sites, but it is not working. Shows the desktop theme still. I've put the mobile user agents in the rejected user agents box in w3 cache. Here is the nginx config w3 cache spit out: BEGIN W3TC Page Cache cache location ~ /wp-content/w3tc/pgcache.*html$ { expires modified 3600s; add_header X-Powered-By "W3 Total Cache/0.9.2.4"; add_header Vary "Accept-Encoding, Cookie"; } location ~ /wp-content/w3tc/pgcache.*gzip$ { gzip off; types {} default_type text/html; expires modified 3600s; add_header X-Powered-By "W3 Total Cache/0.9.2.4"; add_header Vary "Accept-Encoding, Cookie"; add_header Content-Encoding gzip; } # END W3TC Page Cache cache # BEGIN W3TC Browser Cache gzip on; gzip_types text/css application/x-javascript text/x-component text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon; location ~ \.(css|js|htc)$ { expires 31536000s; add_header X-Powered-By "W3 Total Cache/0.9.2.4"; } location ~ \.(html|htm|rtf|rtx|svg|svgz|txt|xsd|xsl|xml)$ { expires 3600s; add_header X-Powered-By "W3 Total Cache/0.9.2.4"; } location ~ \.(asf|asx|wax|wmv|wmx|avi|bmp|class|divx|doc|docx|eot|exe|gif|gz|gzip|ico|jpg|jpeg|jpe|mdb|mid|midi|mov|qt|mp3|m4a|mp4|m4v|mpeg|mpg|mpe|mpp|otf|odb|odc|odf|odg|odp|ods|odt|ogg|pdf|png|pot|pps|ppt|pptx|ra|ram|svg|svgz|swf|tar|tif|tiff|ttf|ttc|wav|wma|wri|xla|xls|xlsx|xlt|xlw|zip)$ { expires 31536000s; add_header X-Powered-By "W3 Total Cache/0.9.2.4"; } # END W3TC Browser Cache # BEGIN W3TC Minify core rewrite ^/wp-content/w3tc/min/w3tc_rewrite_test$ /wp-content/w3tc/min/index.php?w3tc_rewrite_test=1 last; rewrite ^/wp-content/w3tc/min/(.+\.(css|js))$ /wp-content/w3tc/min/index.php?file=$1 last; # END W3TC Minify core # BEGIN W3TC Page Cache core rewrite ^(.*\/)?w3tc_rewrite_test$ $1?w3tc_rewrite_test=1 last; set $w3tc_rewrite 1; if ($request_method = POST) { set $w3tc_rewrite 0; } if ($query_string != "") { set $w3tc_rewrite 0; } if ($http_host != "mysite.com") { set $w3tc_rewrite 0; } set $w3tc_rewrite2 1; if ($request_uri !~ \/$) { set $w3tc_rewrite2 0; } if ($request_uri ~* "(sitemap(_index)?\.xml(\.gz)?|[a-z0-9_\-]+-sitemap([0-9]+)?\.xml(\.gz)?)") { set $w3tc_rewrite2 1; } if ($w3tc_rewrite2 != 1) { set $w3tc_rewrite 0; } set $w3tc_rewrite3 1; if ($request_uri ~* "(\/wp-admin\/|\/xmlrpc.php|\/wp-(app|cron|login|register|mail)\.php|\/feed\/|wp-.*\.php|index\.php)") { set $w3tc_rewrite3 0; } if ($request_uri ~* "(wp\-comments\-popup\.php|wp\-links\-opml\.php|wp\-locations\.php)") { set $w3tc_rewrite3 1; } if ($w3tc_rewrite3 != 1) { set $w3tc_rewrite 0; } if ($http_cookie ~* "(comment_author|wp\-postpass|wordpress_\[a\-f0\-9\]\+|wordpress_logged_in)") { set $w3tc_rewrite 0; } if ($http_user_agent ~* "(W3\ Total\ Cache/0\.9\.2\.4|iphone|ipod|ipad|aspen|incognito|webmate|android|dream|cupcake|froyo|blackberry9500|blackberry9520|blackberry9530|blackberry9550|blackberry\ 9800|blackberry\ 9780|webos|s8000|bada)") { set $w3tc_rewrite 0; } set $w3tc_ua ""; if ($http_user_agent ~* "(acer\ s100|android|archos5|blackberry9500|blackberry9530|blackberry9550|blackberry\ 9800|cupcake|docomo\ ht\-03a|dream|htc\ hero|htc\ magic|htc_dream|htc_magic|incognito|ipad|iphone|ipod|kindle|lg\-gw620|liquid\ build|maemo|mot\-mb200|mot\-mb300|nexus\ one|opera\ mini|samsung\-s8000|series60.*webkit|series60/5\.0|sonyericssone10|sonyericssonu20|sonyericssonx10|t\-mobile\ mytouch\ 3g|t\-mobile\ opal|tattoo|webmate|webos)") { set $w3tc_ua _high; } set $w3tc_ref ""; set $w3tc_ssl ""; set $w3tc_enc ""; if ($http_accept_encoding ~ gzip) { set $w3tc_enc _gzip; } set $w3tc_ext ""; if (-f "$document_root/wp-content/w3tc/pgcache/$request_uri/_index$w3tc_ua$w3tc_ref$w3tc_ssl.html$w3tc_enc") { set $w3tc_ext .html; } if ($w3tc_ext = "") { set $w3tc_rewrite 0; } if ($w3tc_rewrite = 1) { rewrite .* "/wp- content/w3tc/pgcache/$request_uri/_index$w3tc_ua$w3tc_ref$w3tc_ssl$w3tc_ext$w3tc_enc" last; } # END W3TC Page Cache core And here is what I have in my varnish vcl.. sub vcl_recv { # Add a unique header containing the client address remove req.http.X-Forwarded-For; set req.http.X-Forwarded-For = client.ip; # Device detection set req.http.X-Device = "desktop"; if ( req.http.User-Agent ~ "iP(hone|od|ad)" || req.http.User-Agent ~ "Android" ) { set req.http.X-Device = "smart"; } elseif ( req.http.User-Agent ~ "(SymbianOS|BlackBerry|SonyEricsson|Nokia|SAMSUNG|^LG)" ) { set req.http.X-Device = "cell"; } Any help is greatly appreciated, I've been banging my head against this for 2 days..

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• WIFI: iPhone/iPad getting much slower bandwidth than laptop

  - by Sam

  I just got cable internet installed (Comcast). It claims that my down speed should be 25mbit. Over wifi, I get close to that on my laptop, but only about 8 on average with my iPhone/iPad. I'm using testmy.net in the browser on all devices. I have an ARRIS / Motorola SurfBoard SB6141 DOCSIS 3.0 Cable Modem and a Medialink Wireless N Broadband Router. I read somewhere that disabling WMM and the firewall on the router would help (is this even a safe idea?). I've tried both, and neither seem to make much of a difference, if any at all (sidebar: I've noticed that my download speeds vary wildly with cable internet... on my laptop, I'll get 12 down, then 22 five minutes later. Is this typical for cable internet?).

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• Disable public Tomcat6 stack trace

  - by The NinjaSysadmin

  Can anyone advise me how I can go about disabling Tomcat6 from displaying stacktrace output to the browser? Tomcat: 6.0.29 I have made the following changes to /opt/apache-tomcat-6.0.29/conf/web.xml <error-page> <exception-type>java.lang.Throwable</exception-type> <location>/error.jsp</location> </error-page> I'm told putting this in place will give a white screen if the file doesn't exist, however I'm getting stack traces to the screen.

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• Preparing computers for remote MSI installation in NT4 domain

  - by user40177

  We recently purchased EMCO Remote Installer to deploy MSI packages we're creating. We are still (unfortunately) in an NT4 domain, and when I try to deploy a package using domain's administrator credentials I'm getting "access denied". Under the "requirements for remote computers" section on the EMCO website (http://www.emco.is/products/remote-installer/requirements.php), it says that it requires remote machines to have: * Started services: Computer Browser, Remote Registry * File and Printer sharing enabled * Windows Installer 3.1 * TCP ports opened: 135, 139, 445 * UDP ports opened: 137, 138 Is there any way of scripting these changes? If so, could someone get me started? I have about 200 machines I need to get this working with. Thanks for all your help!!

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• Local Area Connection in Slacware 13

  - by asdasd

  I have windows xp and slackware 13 on one computer, and the ISP provided me a new modem. There was manual how to configure it, so i start the web browser and typed it's ip address 192.168.1.1 and the web interface of the modem appeared so i logged in, that was easy. But under slackware, i don't know how to enter in the modem config / web interface. I type in 192.168.1.1 but it's not working. Here's the output of ifconfig eth0 : eth0 Link encap:Ethernet HWaddr 00:a1:b0:01:18:28 inet addr:169.254.73.8 Bcast:169.254.255.255 Mask:255.255.0.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:17 Memory:febff400-febff4ff How can i log in into the modem from linux, i.e. find it's assigned ip under slackware ? Thank you.

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• IIS Seems to Forward Domain/IP to Domain Controller

  - by asinc

  We have a server (Server 1) with Win 2008 that is accessible by RDP and also is set as the primary DNS IP for a domain (example.com). This server is on the same network as an SBS 2008 server (Server 2) which is the domain controller and internal Dns server. Web requests going to example.com with IP of Server 1 are being passed to Server 2 and served up by IIS from Server 2. What causes this to happen? Is there a safe way to have Server 1 IIS handle the web requests which was our expected outcome? Example: DNS entry on ISP: example.com = 111.111.111.111 Server 1 = 111.111.111.111 Server 2 = 111.111.111.112 Web user goes to example.com in browser, and the page is actually returned from 111.111.111.112?

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• OS X "service" for running JavaScript bookmarklets from anywhere?

  - by Spiff

  I have some JavaScript bookmarklets that work on the selected text in a web page, but I'd like to be able to use them on the selected text in any Mac OS X app, not just browsers or things that provide browser-like views. Mac OS X has the "Services" (sub)menu where any app can publish services that it can provide to other apps, but I don't know how to make my bookmarklets show up as services there. Is there a way to make JavaScript bookmarklets show up as Mac OS X "Services", or otherwise execute JavaScript against the selected text in any Mac OS X app?

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• PXE Boot PCLinuxOS ISO

  - by DBNotCooper

  I'm in the process of trying to convert some computers at my local school to be diskless browser stations. We've identified PCLinuxOS as the OS we'd like to use due to it's easy interface for creating custom ISO images (we need WINE and some custom apps installed also, as well as FireFox). I've been having problems figuring out how to get an ISO to boot via PXE. In our network, I only have access to TFTP and HTTP, so I cannot use NFS. The machines all have enough memory (4 gigs) that they could use a ram drive to hold the ISO image, if that helps. Currently I've been looking at GPXE with GRUB/MEMDISK, but I don't know if that's the right solution, or even where a good resource is for setting it up. Searching the web has proved fruitless, as most of the information is either NFS-specific or out of date. The other students and I would appreciate any help! :)

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• Right Drag on Mac

  - by Mafuba

  How do you perform a right-click-drag operation on Mac hardware? I know you can right click, but there does not seem to be a right click drag gesture. In my specific case I am using a MacBook Pro, and I am in a Windows environment. The question is more than just theoretical. I ask because there is functionality that uses this gesture, at least in the Windows world. For example, right now I'm trying to do a copy and rename in the TortoiseSVN repository browser. I think there are things you can do with a right drag in graphical editors like Photoshop as well. In windows you get a context menu when you right drag files. For those familiar with the software, I know I can do it in other ways; I'm not looking for workarounds to specific problems.

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• Perl program not getting executed in xampp

  - by user1867151

  I am very new to CGI programming in Perl. In order to learn it i installed xampp 2 days back. But I am unable to execute my perl code . The code goes as folows: #!/usr/bin/perl use CGI; $co = new CGI; print $co->header, $co->start_html(title=>'CGI Example'), $co->center($co->hi('Subhayan welcome to CGI')), $co->end_html; Have saved the code in a text file named : Subhayan1.cgi and kept it in the folder cgi-bin under xampp folder in C drive. When i try to execute this through my web browser typing : "http://localhost/cgi-bin/Subhayan1.cgi" it comes up with a "Object not found page". I checked the apache configuration file under : xampp/apache/conf/httpd.conf. I checked the entry : ScriptAlias /cgi-bin/ "C:/xampp/cgi-bin/" It looks like pointing to the correct directory. What is the issue here can anyone help please???

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• Windows Authentication Website Asking for Credentials

  - by ChrisHDog

  I have a website that has ASP.Net Impersonation Enabled and Windows Authentication Enabled. When navigating to that site using IE8 with "Enable Integrated Windows Authentication" (under Tools - Internet Options - Advanced) checked, the browser pops-up a "Windows Security" dialog box asking for User name and Password. My understanding was that this was automatically passed through and I would not need to type in those details. Additional Information: If I uncheck "Enable Integrated Windows Authentication" I do not get the pop-up window and it appears to work was intended (though that is the opposite of what I would be expecting) If I enable Windows Authentication in Firefox I do not get the pop-up window (i.e. works as intended) Are there some settings or similar that could have been set to create this behavior? Or has anyone else seen similar behavior and know how to fix?

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• Implementing a form of port knocking + Phone Factor = 2 Factor auth for RDP?

  - by jshin47

  I have been looking into how to secure a publicly-available RDP endpoint and want to implement our two-factor authentication RADIUS server, PhoneFactor. I would like to implement the following process: User opens up web app in browser In web app, user enters username + password, initiates RADIUS auth Phone factor calls user to complete auth Once user is authenticated, port 3389 is opened on user's IP on pfSense firewall. After some amount of time, firewall rule is removed for that IP I would like to know the following: Is this a typical setup? If it is a bad idea, please explain why. If it is possible, are there any packages that assist with this? Specifically, the third step, where the appropriate firewall rule would need to be added... Edit: I am aware of TS Web Gateway, but I want the users to be able to use the traditional RDP client...

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• URL redirect to a virtual server on a VLAN

  - by zeroFiG

  I have a production site, running off 10 servers. I've been given another virtual server on the same network as these 10 servers, to use for testing purposes. This server doesn't have it's own DNS entry. Therefore I need to do a redirect to the site hosted on this virtual server for a sub-domain of the site running on the 10 other servers. So Basically I was wondering how I would configure a sub domain of my production server to point at the Virtual server for testing. I'm guessing I need to modify my site file in /etc/apache2/sites-available and add another virtual host like the following and modify the redirect match: <VirtualHost *> ServerName SUBDOMAIN.DOMAIN.com RedirectMatch 301 (.*) **IP ADDRESS** CustomLog /var/log/apache2/SUBDOMAIN.DOMAIN.com.access.log combined </VirtualHost> Do I set the redirect match to just the IP on the Virtual server, and then configure another site file in the sites-available directory, which will recption this redirect and point the browser towards the HTML root? Thanks, I hope I made myself clear.

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• How to change HTTP_REFERER using perl?

  - by zuqqhi2

  I tried to change log format and change HTTP_REFERER using perl to change browser's referrer like below. [pattern1] Log Format : %{HTTP_REFERER}o perl : $ENV{'HTTP_REFERER'} = "http://www.google.com"; [pattern2] Log Format : %{X-RT-REF}o perl : addHeader('X-RT-REF' => "http://www.google.com"); [pattern3] Log Format : %{HTTP_REFERER}e perl : $ENV{'HTTP_REFERER'} = "http://www.google.com"; but they didn't work. How can I do it? If you have any idea please teach me. Note that I just want to do this as a countermeasure for illegal access in my intra tool.

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• Navigation keys on numeric keypad randomly stop working

  - by Tom Hughes

  Shortly after a restart, the arrow and navigation (Home, End...) keys on my numeric keypad will randomly stop working, and -- regardless of the state of the NumLock -- return only numbers. I notice this the most in browser applications (like this edit box) but the same effect is true on the command line and in desktop applications like Word. I swapped keyboards and now use a Microsoft keyboard (both are USB keyboards) but the same behavior persists. I also tried a clean boot to clean out startup programs but this made no difference. The separate arrow keys and navigation keys between the QWERTY keys and the numeric keypad work fine, but my strong preference (dating back to DOS and MS Flight Simulator) is to use the navigation keys in the numeric keypad.

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• How to enable extended logging for classic asp on IIS7 on Windows 2008 R2

  - by Neil Trodden

  I had to deploy an application that was not written by me onto the above configuration. It is a rather bizarre hybrid of asp.net and classic asp and it's the classic asp that is proving troublesome. The client is having problems with 500 Internal Server Errors appearing and I can see some of these in the logs but I only get the error code and the page name but little else. What I would like to see is the actual error message to at least give me an idea what is going on (or not going on, depending on your point of view) I don't want to display errors in the browser as I don't know the code well enough and this could (for all I know) display some crazy code where the db password is hard-coded into the site.

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• Why does text look so Horrible in my HD monitor???

  - by Laura

  I just bought a 1080p 22" Samsung HD monitor (connected via HDMI) and the picture and video quality is great but the text quality is absolutely horrible. Even as I type now all the text in this text box as well as in the browser toolbar and start menu, etc looks weird - like it all has a white outline around it that makes it jagged and hard to read. It hurts my eyes just to look at it. I am running my PC in the suggested native resolution of 1920 by 1080, so what's the problem? Is this one of the unavoidable downsides of using a HD monitor? Is there a solution to the problem?

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• Can't connect to local SQL Server

  - by D.M.

  I'm banging my head against the wall here and can't get things figured out. Yesterday I uninstalled SQL Server 2008 Express and installed a full copy of SQL Server 2008 R2. Everything installed fine but I can't connect to the database to save my life. There is a similar question here that never got answered and I'm not sure if this may be specific to 2008 R2 and how I may have installed. Under my old configuration (SQL Express) I connected with "DM\SQLEXPRESS" just fine. So far I've tried: DM\MSSQLSERVER - .\MSSQLSERVER - \MSSQLSERVER - MSSQLSERVER - DM\Dave\MSSQLSERVER and I get the "cannot connect to server" error every time. I have the service installed as well as the SQL Server Browser that I have started. If anyone had any suggestions that would be great.

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• Firefox: howto open hxxp or other obscured links automatically

  - by fyodor78

  howto open hxxp or other obscured links automatically with Firefox (without copy and paste manually)?. For non obscured links I use Linky Firefox add-on From Wikipedia hxxp://, sometimes h**p:// or _ttp://, is used in URLs (web links) to obscure the fact that one is linking to a http:// website. It is generally used to avoid automatic recognition by computer programs. For a user to follow this link, it is usually necessary to manually copy-paste the link onto the web browser's address bar and replace the 'x'es with 't's. screenshot I use RefControl, so security is not an issue.

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• Wrong source IP when accessing internet directly from TMG server

  - by jarod1701

  Hi everyone, after implementing a ForeFront TMG server I'm facing only one problem: After I added a second IP to the external adapter I had to manually set "NAT Address Selection" inside the network rule "Internet Access" to the first IP since all others would get blocked by the CISCO firewall. This configuration works as long as traffic comes from the internal network (e.g. browser on clients). Traffic from the TMG directed to the internet always carries the second IP as it's source address and gets blocked. All our other TMGs/ISAs are running fine and I never came across this problem- Does anybody have a clue, coz I don't?! Kevin

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• Unable to connect to a remote SQL Server Instance over a VPN

  - by Jack Njiri

  I'm running SQL Server 2005 on two different servers running Win XP. The two servers are in different physical locations and are connected via a dedecated point to point data link in a virtual private network(VPN). Im only able to connect to the remote instance of SQL Server by specifying the IP address on the server name property. If I provide the actual server name say 'ServerA', then I get an error message. Everything works fine except configuring replication at the subscriber level, which requires the actual name of the instance, not an IP address or alias. I have already configured both instances on allow remote connections and im running the SQL Server Browser. How do I connect to the remote instance by providing the instance name? Alternatively how I configure subscription to a remote publisher without supplying the remote instance name?

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• How is my password sent across when I check gmails/access bank site [closed]

  - by learnerforever

  What encryption is used when my password is sent across in gmails/when I do online banking? RSA? DSA? Public-private key encryption?. In key encryption, which entity is assigned a public/private key? Does each unique machine with unique MAC address has a unique public/private key? Does each instance of browser have unique key? Does each user have unique private/public key? How does session key come into picture? How do machines receive their keys?

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• Routing to various node.js servers on same machine

  - by Dtang

  I'd like to set up multiple node.js servers on the same machine (but listening on different ports) for different projects (so I can pull any down to edit code without affecting the others). However I want to be able to access these web apps from a browser without typing in the port number, and instead map different urls to different ports: e.g. 45.23.12.01/app - 45.23.12.01:8001. I've considered using node-http-proxy for this, but it doesn't yet support SSL. My hunch is that nginx might be the most suitable. I've never set up nginx before - what configuration do I need to do? The examples of config files I've seen only deal with subdomains, which I don't have. Alternatively, is there a better (stable, hassle-free) way of hosting multiple apps under the same IP address?

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• How to use multiple dns?

  - by Enrichman

  When I connect at work the net is going to assign me a dns that is working fine. After that when I connect to VPN I'm going to receive a different dns. With this one I can reach the server of the vpn owner but I'm not able to go to the internet. BUT if I switch the dns with the old ones I'm able to surf again (still connected to the vpn, but I cannot surf their server). Recap: DNS1) MyPC - CompanyProxy - Internet DNS2) MyPc - CompanyProxy - VPN - NoInternet (can Ping vpn servers) DNS1) MyPC - CompanyProxy - VPN - Internet (cannot ping vpn servers) Weirdest thing: I'm able to do a nslookup from anywhere, but ping is going to fail. Is possible to use both DNS? Or setup a dns just on the browser? I'm quite lost..

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