Networking :: Bypass Proxy For All Application?
Feb 15, 2010
I am using FC11. My problem is whatever application that needs access to the internet are blocked by company's proxy server. So, configuration is like
my_machine---------> firewall ----------> outside world..google and etc
Now, If I am using firefox then I have configured it to use proxy server and required login details and etc. But, my eclipse, ssh, git and all those needs internet connection as well... Is there anything like which sets all details (proxy server, user name and passwd) system wide ? So that I dont have to pass it to each application...
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Oct 7, 2010
An application that supports SOCKS 5 protocol can forward its network connection over ssh and dynamically forward to any host name that you specify isn't it ? that means firebox web browser can use SOCKS 5 protocol can be used by pass proxy settings isn't it ? so how can a sys admin remotely detect if a particular user is bypassing proxy settings using SOCKS 5 protocol ?
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Jul 23, 2011
installed dansguardian and now working fine.I got a small problem. People bypassing proxy settings in firefox, means they go to settings and changes proxy settings to no proxy.. how to prevent this? How can I force people to use proxy to connect Internet? I done some googling but, unable to find a solution.
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Jun 1, 2010
I've read the documentation, but I'm still confused. I have two servers, one running Postfix and SquirrelMail, and another i want to setup a wiki(already setup) and Photo Gallery.On my Second server(2)I have two virutal webservers, wiki.rmasonfamily.info and photo.rmasonfamily.info, both running on port 80.My first computer is running my mail server again as a virtual server, mail.rmasonfamily.info. Default server is not used in either one.
Server 1 will be my proxy server, and if I understand correctly, my reverse proxy. Ubuntu had Apache set with a configuration in etc/apache2 using sites-available with configuration for each Virtual Server with sites-enabled with links to configuration files in sites-available. My Virtual Server in Server 2 are working fine, along with my mail server in Server 1. this is the code I assume I must use to bypass to wiki.rmasonfamily.info. In server 1, under sites-available, in the file wiki.rmasonfamily.info this is the code I put
<VirtualHost *:80>
ServerName wiki.rmasonfamily.info
ProxyRequests Off
ProxyPreserveHost On
[code]....
Doesn't work, I know I'm doing something wrong...
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May 20, 2010
When trying to use Yum install yumex, I get the error that proxy authentication is required, as below.code...
I saw several similar posts but none seem to resolve this issue. Can someone help me in getting out of the proxy and domain?
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Mar 28, 2011
point me at a free proxy to bypass this which can simply be installed, built and/or run.setting up a server outside china and running a tunnel to it from my comp is not an option. also, below is a list of sofware that i have tried and failed to work:
Tor with vidalia
Tun with squid (i think squid)
hamachi (which i later realized would never have worked)
i tried to get haystack but it wouldn't build.
PS: if this post is in the wrong area, please tell me where to move it...
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Aug 30, 2010
My company web access is behind proxy(http://abc.proxy). Network admin can get to check who is top10 user and web they access. I owned a centos server. I have a thought that create an encrypted tunnel within proxy so the admin cant detect my http address. This is how it going to works
client with OpenVPN -> OpenVPN server(centos with company proxy)-> proxy -> internet
My connectivity in my client are using OpenVPN server as bridge. Hence, no record for client is recorded in my Network admin monitoring list. OpenVPN server's activity can be traced by network monitoring tools, just assume that our ultimate goal is to hide client activity.
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May 19, 2010
I have a computer with redhat installed that once it boots up it comes to an application login screen. I want to bypass that and get root access to reformat hard drive and install latest version of Debian Linux.
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Jul 20, 2011
Using squid, can you proxy the [URL] through the site [URL]. From the end-user perspective they would go to and maintain the [URL] and squid would proxy the application at [URL]. More simply the application available at [URL] would load into the namespace/domain [URL].
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Dec 9, 2010
Currently my DHCP Server is working now what i want to have is auto detection of squid proxy in any browser but I still got an error in my dhcp server when I restart it.
My Config:
# DHCP configuration generated by Firestarter
ddns-update-style interim;
ignore client-updates;
[code]....
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Apr 21, 2009
I have a lifttime premium account at Megaupload.com. Recently I found that megaupload has blocked all IPs in my area. I have sent emails to their tech but nothing has returned!!I have tried to use proxies to download stuff from megaupload, however, none of them works for suspected bandwidth reason, not to mention that it might be slow too.
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Apr 28, 2011
I am using squid 2.6 (as a proxy server) in my cent os 5 box.The clients computers are factehing the web pages successfully. The firewall (IPTABLES) are already disabled.The problem is we have an internal web based application by which the users add the data in it. when the user type the ip address in the browser i.e http://10.1.7.21:81/mis squid shows Code:ERRORThe requested URL could not be retrievedWhile trying to retrieve the URL: http://10.1.7.21:81/mis/The following error was encountered:Access Denied.Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.Your cache administrator is root.We have another proxy server MS ISA 2006 and by changing proxy from Linux squid to MS ISA we can access the page.
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Dec 18, 2010
My router is crap. If I use DHCP it sets all the computers DNS to itself and all DNS requests get cached in the router. It even starts to loose some DNS request if to many are made at once. On my windows PCs this isnt a problem I just set DNS to google's public DNS servers (8.8.8.8 & 8.8.4.4) and bypass my router and ISP alltogether but when i go to pref>network_connections i have to either set DHCP or manual, there is no option to set DHCP with custom DNS.
I'm sure there must be a way to do this in terminal, can someone tell me how?
I'm using ubuntu 10.10.
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Oct 28, 2009
At the moment I have a proxy and all the users have to configure it in the browser to access internet. I want to make the users able to browse even without configuring the proxy in the browser. but eventually it should be received in the proxy rather than giving an error to the user. I heard with transparent proxy I can redirect all the traffic from a particular network, to a particular host( ie my existing proxy).
I tried this using firewall rules. But then the existing proxy doesn't understand the protocol of the requests. I heard that it should be in the kind of proxy protocol.
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Feb 23, 2010
I've setup squid proxy st time on centos 5.This is my current setup.squid.conf:Quote:acl our_networks src 192.168.10.0/24 ttp_access allow our_networksQuote:
internet -- modem -- Firewall --switch--squid proxy (192.168.10.100)
--client workstation ((192.168.10.200)
(client workstation is connected to the same switch as the squid proxy)
[code]...
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Feb 17, 2010
application to monitor application wise network usage?
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Jul 7, 2010
I've been trying to make myself anonymous, but I cant find 'Tor' anywhere, tried 'yum & kpackagekit' neither have it. I did find 'Privoxy', installed it, set proxy for HTTP and HTTPS in Firefox, but it says 'unknown proxy' when I try to use it! I've been to the Privoxy web site and read through the 'User manual', but most of it is 'geek' to me!
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Feb 23, 2011
I am trying to set up my squid3 proxy as a transparent proxy - right now, I have to manually configure browsers to access via proxy. I understand that I have to put some rules into Iptables and also some further directives in the squid.conf.
I have a couple of specific questions. The proxy server is running on a Ubuntu 10.04 workstation and this machine also acts as a dhcp server for the network. I have just one subnet , namely 192.168.0.1-254 There is only 1 network card. Is it much easier to put in a second network card or is it just as easy to configure the existing lan card as a dual IP?
Is it necessary to configure these 2 IP's ( whether they are via 2 lan cards or dual IP on single card ) to be on different subnets. i.e ETH0 192.168.0.1 and ETH1 192.168.1.1 or is ok to have something like ETH0 192.168.0.1 and ETH1 192.168.0.254 ( where ETH0 is the one facing the LAN and ETH1 points to the modem router / switch i.e The Internet ) Where specifically do I save the Iptables rule configuration file and what must I call it ?
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Feb 27, 2010
I've been doing some security testing in a lab environment that does not have direct internet access. It's actually a little complicated: From home to connect to my lab machine, I
1. SSH to machineA.
2. SSH from machineA to machineB
where machineB is my actual lab machine. neither machineA or machineB allow anything other than SSH, and machineB is only accessible from machineA. However, I really need to run yum on machineB. I have managed to get internet access via Firefox on machineB by creating a series of SOCKS proxy via SSH.
1. machineB: ssh -L 12345:localhost:12345 user@machineA
2. machineA: ssh -D 12345 user@machineC
3. machineB: configure firefox to use socks proxy, localhost, 12345
where machineC has internet without limits placed. This is the only way I have managed to get internet working. I tried using ssh -L all the way from machineB->machineA->machineC but it didn't work (even when setting Firefox to use http proxy). I tried using ssh -D all the way, but again that doesn't work either.
I do have access via Firefox using socks proxy. However, yum update fails to retrieve mirror list, and from what I have found I don't believe yum supports socks proxy directly. Instead, it uses http_proxy / ftp_proxy. how to get yum to go out over the SOCKS proxy I created (same one using in Firefox)? It seems like since Firefox can access the internet and everything without issues, i should be able to get yum to tunnel through the same connection to access everything.... I tried
[URL]
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Aug 17, 2010
is there a way to force wget to use a specific squid proxy when making connections ? - I use a squid proxy normally, but I need this specific request to go via a different one. I dont have to use wget, I just need a way to test squid's blocking rules by requesting various pages through it, this proxy is not my normally proxy on the network and so I cant rely on wget taking the environment variable.
Also, this is as part of a script, so anything that avoids editing wget config files would be best. - Perhaps curl can do this ? - currently im using the exit code of wget to determine if the connection was made.
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Dec 7, 2010
what is the acl type is used to bypass a website where to implement the rule?
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Sep 1, 2009
I am working on fc10. I connect to internet using two connections: with proxy and without proxy. Initially I had some problem in configuring yum for proxy and I resolved it by creating files proxy.sh and proxy.csh in /etc/profile.d with the required details (export_proxy).Now when I connect to my connection without proxy I have some problems .Whenever I try to do yum update I get the following error:
"[URL]: [Errno 12] Timeout: <urlopen error timed out> Trying other mirror. Error: failure: repodata/primary.xml.gz from adobe-linux-i386: [Errno 256] No more mirrors to try." what changes do I need to make in order to use yum in the connection without proxy?
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Feb 18, 2011
I have installed Suse 11.3 on /dev/sdc which is a hard drive connected to a usb port. Windows 7 lives on /dev/sdb in the box. Another drive sda is in the box also. I configured bios to boot the usb drive first. Grub is installed on /dev/sdc mbr. My scheme is to allow me to boot directly to Windows if the usb drive is not powered up, and directly to Suse if it is powered up. That all works. However, I would like to bypass the grub menu and boot right into Suse, like what happens with Windows, not having to select an entry from that pesky grub menu.
What is the best way to configure the system so that this can work? I've done a lot of searching but there are too many grub horror stories in the haystack to find this particular needle. Also, I've had my share of problems recently after losing control of the boot process somehow and not being able to boot into Suse at all. All of the postings I found on the net about recovering from that turned out to be phoney in some way and I had to reinstall to bet better. I'd like not to repeat that scenario.
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Apr 26, 2010
I upgraded my Ubuntu to 10.4 and when I boot it stops for 24 seconds at the boot menu then loads. This is the same menu you get on boot when you press Esc. How do I get Ubuntu to boot normal?
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Oct 14, 2010
I have a persistent installation of 10.10 on a USB thumb drive installed with the Universal USB Installer. When I boot, it always brings up the welcome screen, with the languages on the left side, the big "Try Ubuntu" button in the center, and an "Install Ubuntu" button on the right. I just want to run ubuntu from the USB stick. When I click on "Try Ubuntu" the system hangs for 2-3 minutes, requires a force-quit and then brings up the desktop.
If, at the beginning of the boot process, I interrupt it bringing up the initial menu, I can select "English" then "Run Ubuntu from this USB", and it boots very quickly directly to the desktop. Before this install I was running 9.04 and later 10.04 from the same USB stick and had no issue with it booting directly to the desktop. Ideally I'd like to not need to intervene and just have load to the desktop. Do I need to make some changes to grub?
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Dec 3, 2010
I realise that passwords are a good thing but I'm getting fed up having to enter a password just to get my wireless network to work every time I switch on Ubuntu or when I log out and back in again.
Seeing as there is nobody in the house that I want to keep away from the computer, is there a way to automatically sign-in to my wireless network without having that annoying key-chain popping up every time?
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Jan 8, 2011
I currently use 4 keyboard maps in my session (Russian, Ukrainian, Polish and French). I'd like to use one more : Sweddish, but it seems that I can't have more than 4. Does anybody knows a way to bypass this limit?
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Mar 18, 2011
I'm running Ubuntu 10.10 off a desktop. I was using it for quite a while up until last night when out of nowhere while surfin', and browsing, the screen just turned white, I've tried restarting by powering off manually, as I couldn't get it to any other way. After the computer restarts, it might flash black for a sec a couple of times, then back to being white again, the BIOS screen doesn't even show up. It sounds like in the background the computer might still be loading up. My monitor is a 21"LCD, if that means anything?
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Jun 13, 2011
Yesterday I was working on Ubuntu, i shut down the computer normally, and then when i restarted it like an hour later i couldn't bypass the login screen. I insert my username & password correctly and the screen goes back for one second and then displays the login and password inputs again. I have just one username there. Before i shut it down i was trying to install Eclipse, so i messed around with some files related to Eclipse only, if that has anything to do with the problem. I also have Windows XP installed along with Ubuntu 9.10.
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Jul 23, 2010
I have a server that said a volume was dirty and to check it at reboot, so someone did a shutdown -rF now. Only problem is the other volumes are HUGE and it will take forever, which I cant have happen. The volume with the trouble is non-critical so I could take it offline and check it that way if i can get this to boot quickly. How can I do that if its going to auto check every volume on reboot now?
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