Fedora Networking :: Fake IP To Bypass Blocking?

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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Server :: Blocking IP Address For Fake Users?

Feb 4, 2011

How to block an ip address from mikrotik so that when a fake user use this ip he doesn't get internet but in the mean time real user gets internet. Real user will not harm if fake user trying to access.

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Fedora Networking :: Blocking Subdirectories, NOT A Whole Domain/IP?

Aug 8, 2009

So, let's say there was a website www.qwerty.com, which is completely appropriate if not necessary except for the asdfg subfolder (www.qwerty.com/asdfg), which contains,say, pornographic material I want blocked. Is there any way to block "asdfg" without blocking the entire domain (www.qwerty.com)? I already tried editing my hosts file, but apparently that only works for whole domains.Also, while we're at it, can the hosts file be used to actually block IP addresses, or just domain names (so if I wanted qwerty.com with IP of to be completely blocked, but know my family or employees are little smarter than that, I could add the line "" to prevent all access to that website)?

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Fedora Networking :: VPS - Blocking HTTPD DOS Attacks?

Apr 6, 2010

I have a VPS which is running HTTPD, and its getting blown to bits by a DOS Attack. Turns out mod_evasive is totally useless (due to not running a total - rather counting per child process) and the only way to stop the box from running at 100% on all cores is to term HTTPD. So, what rules can I implement on the iptables firewall to block multiple requests from an IP? I saw this: [URL] Where someone has posted some rules but these dont work ("unknown error 4294967295" on the 3rd line). This is what i'm after though - block multiple requests from a single IP for a certain period of time.

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Fedora Networking :: Iptables For Blocking One Computer?

Jul 9, 2011

Friends the following shall block a particular machine in the same network, what can be done if it is dynamic IP and from other network?

iptables -A INPUT -s -m mac --mac-source 00:50:8D:FD:E6:32 -j DROP

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Fedora Networking :: SELinux Is Blocking Internet Access?

Mar 12, 2009

when I try to connect to internet SELinux give my a preventing NetworkManager here is what its say:

SELinux is preventing NetworkManager (NetworkManager_t) "getattr" to /dev/ppp


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Fedora Networking :: Can Not Stablish PPTP VPN Because SELinux Blocking Network Manager

Dec 1, 2009

I can not stablish PPTP VPN because SELinux blocking Network Manager.

I get the following:

Summary: SELinux is preventing NetworkManager (NetworkManager_t) "unlink" to ./reso


I'm attaching complete alert.

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Fedora :: Fake An RPM File Being Installed?

Oct 7, 2010

In some recent update, I seem to have gotten the file "libdvdread.so.3" installed in "/usr/lib" (if you want to check, the file length is 127044, and the date is Jan 27, 2008). This looks fine.

Now I have a bunch of rpm's that insist on having the package "libdvdread.so.3" and I can't fine a package that has it. How do I tell the RPM database that this file is alive and well in my system? It ought to be pretty simple, but there doesn't seem to be a simple way to do it.

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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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Networking :: Bypass Squid For Accessing Website?

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 squid shows Code:ERRORThe requested URL could not be retrievedWhile trying to retrieve the URL: 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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Networking :: Socks 5 To Bypass Proxy Settings?

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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Fedora Installation :: Can't Access Intel Fake Raid1

Jan 6, 2011

I have the following configuration:

2xHDD 300GB RAID1 - OS part
2xHDD 1TB RAID1 - data part.
Both arrays were created inside the bios-like setup.

During the installation of fedora I "checkboxed" only the 300GB OS raid and used it for the installation. Everything is ok with it. After installation finished and I rebooted, I tried to initialize my second RAID1, that's 1TB - I was able, it was OK, I created 1 max-size filesystem there and put some data in it. After reboot this filesystem didn't want to mount for some reason - so I commented it in fstab and to my surprise, when I reached linux - the partition for it doesn't exist!!! Here is some data:

[root@localhost ~]# cat /proc/mdstat
Personalities : [raid1]
md125 : active (auto-read-only) raid1 sdc[1] sdd[0]
976759808 blocks super external:/md127/0 [2/2] [UU]


My guess would be that I am not fully and properly initializing the second array, (it's marked as auto read only in cat /proc/mdstat) but I'm not sure how to proceed.

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Programming :: C - For System Calls, Is Blocking Or Non-blocking Default?

Mar 23, 2010

For system calls, is blocking or non-blocking default in C? Simple question, just am not seeing the answer super quickly.

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Ubuntu Networking :: Bypass Router DNS Caching With Public DNS (but Keep DHCP)?

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 ( & 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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Ubuntu Networking :: Dansguardian / Squid Proxy Firefox Bypass?

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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Programming :: Blocking And Non Blocking TCP Send/recv?

Dec 25, 2010

I have a device that is working on modbus protocol andI have written a small program(with block TCP read method ) to read its registers via modbus protocol.my program is working very well but except those times that I unplug the Ethernet cable or turning off the modbus gateway during programs work.at this time my program stops on recv system call (if it reach this system call exacly when I unplug Ethernet cable or turning off the modbus gateway during programs work).I changed my source to work in nonblock TCP method, at this time with the same situation my program does not stop/block on recv system call but after pluging back the Ethernet cable or resuming the connectivity situation back it reads data incorrectly .this is my code:Quote:

#define DEBUG
#include <fcntl.h>
#include <string.h>


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Fedora :: Possible To Bypass KDEWallet For Specific Applications?

Jul 11, 2010

Is it possible to bypass kdewallet manager for certain applications while leaving it in place for others? Specifically, I do not want to be prompted to open the wallet when I login and initially access the wireless network, but still require opening of the wallet to check email.

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Fedora :: F14 Bypass Login And Boot To WahCade?

Jan 20, 2011

I am VERY new to linux and have managed to install Fedora 14, xmame.SDL and Wah!Cade and finally got it all working great! My final step in my setup is (since the only use for this machine is wahcade) to be able to switch the computer on and boot straight into wahcade...and eventually hide all traces of Fedora during boot. I have managed to get the login to Autologin by adding some lines at the end of /etc/gdm/custom.conf:

However, I still get the login box but with "Autologin" on it which I have to click ok for or wait about 15 seconds and it goes away. (I was under the impression the timedlogindelay as 0 would be instant) Then immediately after that it still asks for a keyring password.

How can I just get rid of the whole login process (like a single user thing) and just have the thing boot straight to the desktop? Also, once I achieve that, how can I make it open wahcade? And can I remove all the icons from the desktop somehow?

Everything I have come across on tinternet seems to assume I know linux inside out so answering in dummy step by step terms is more than welcome. I have a programming background but I am unfamiliar with linux programs, plugins, terminal, terms etc.

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General :: Unable To Access Intel Fake RAID 1 Array In Fedora 14 After Reboot

Jan 6, 2011

1st I am relatively new to linux (but not to *nix). I have 4 disks assembled in the following intel ahci bios fake raid arrays:

2x320GB RAID1 - used for operating systems md126
2x1TB RAID1 - used for data md125

I have used the raid of size 320GB to install my operating system and the second raid I didn't even select during the installation of Fedora 14. After successful partitioning and installation of Fedora, I tried to make the second array available, it was possible to make it visible in linux with mdadm --assembe --scan , after that I created one maximum size partition and 1 maximum size ext4 filesystem in it. Mounted, and used it. After restart - a few I/O errors during boot regarding md125 + inability to mount the filesystem on it and dropped into repair shell. I commented the filesystem in fstab and it booted. To my surprise, the array was marked as "auto read only":


and the partition in it was not available as device special file in /dev:


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Fedora Installation :: No TPM Chip Found Activating TPM-bypass

Mar 31, 2010

When trying to install fedora, I frequently run into the problem where it locks up on boot.

The line that I am able to read right before it locks up is: "No TPM chip found, activating TPM-bypass!"

I was wondering if anyone has any similar problems or how I could fix this.

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Fedora :: YUM - Unable To Bypass Proxy Authentication With DOMAIN / Get It?

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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Networking :: Blocking Download For LAN Users?

Jul 15, 2010

I would like to block downloading for my LAN users through squid or other.

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Server :: Blocking Social Networking On The LAN?

Dec 23, 2010

I have a Debian server running at the gateway level on a LAN. This runs squid for creating block lists of websites - for eg. blocking social networking on the LAN. Also uses iptables.

I am able to do a lot of things with squid & iptables, but a few things seem difficult to achieve.

1) If I block http://www.facebook.com, people can still access https://www.facebook.com because squid doesn't go through https traffic by default. However, if the users set the gateway IP address as proxy on their web browser, then https is also blocked. So I can do one thing - using iptables drop all outgoing 443 traffic, so that people are forced to set proxy on their browser in order to browse any HTTPS traffic. However, is there a better solution for this.

2) As the number of blocked urls increase in squid, I am planning to integrate squidguard. However, the good squidguard lists are not free for commercial use. Anyone knows of a good squidguard list which is free.

3) Block yahoo messenger, gtalk etc. There are so many ports on which these Instant Messenger softwares work. You need to drop lots of outgoing ports in iptables. However, new ports get added, so you have to keep adding them. And even if your list of ports is current, people can still use the web version of gtalk etc.

4) Blocking P2P. Haven't been able to figure out how to do this till now.

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Networking :: Blocking Sites With SQUID Proxy?

Feb 17, 2010

I need to block some of my sites with SQUID Proxy. I added following lines to my SQUID configuration file but still the site remains unblocked.How to block it?

acl blocksites url_regex yahoo http_access deny blocksites

I have also tried saving some url & filter content in a file and edited configuration as follows,

acl blocksites url_regex "/etc/squid/squid-block.acl" http_access deny blocksites

The squid-block.acl file contents are, .cricinfo.com mp3

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Networking :: Bind9 + Rbldnsd For Porn Blocking?

Sep 5, 2010

I'm trying to configure bind9 to block porn by having it pretend to be authoritative for a list of porn domains. It can then return a "fake" IP for the port sites, which points to a page on my server. So far, the only way I have found to do in this in bind requires a separate zone for each porn domain. This doesn't work because of memory problems - I have 1000's of porn domains to block.

I'd like to instead have bind forward queries to rbldnsd, which can take a list of domains in a "data set" file, and use it to return a single A record (pointing to my "access denied" page). However, I think this will not work because I would still need a separate "zone" for each porn domain name.

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Ubuntu Networking :: Server Blocking SSH From Work Network

Feb 2, 2010

I have an ubuntu 8.04 dedicated server running openssh which I am having problems with.

The server is based in England yet I am currently working from Thailand. Slow speeds and timeouts I am used to but it is now over 24hr since I have managed to SSH the server (from here).

I just tried remote desktop on my PC back in the UK and this connected straight away through both SSH and SCP.

Thinking that it may be the IP being blocked from my works network I switched off wifi on my phone and tried to connect over the data network a few times with no luck.

Another strange problem is that when we got the server it was locked into a chroot jail which SSH(22) always leads into. After accessing SSH on port 22 I have to run a break script to gain root access. The sshd_config file says that the server is listening on port 57 yet I have never been able to access this.

> netstat -a | grep ssh
tcp6 0 0 [::]:ssh [::]:* LISTEN
> iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination


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Ubuntu Networking :: Blocking Sites With SQUID Proxy?

Feb 17, 2010

I need to block some of my sites with SQUID Proxy. I added following lines to my SQUID configuration file but still the site remains unblocked.How to block it?acl blocksites url_regex yahoohttp_access deny blocksitesI have also tried saving some url & filter content in a file and edited configuration as follows,acl blocksites url_regex "/etc/squid/squid-block.acl"http_access deny blocksitesThe squid-block.acl file contents are.cricinfo.commp3

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Ubuntu Networking :: Router Blocking The Internet Connection?

Jun 17, 2010

I bought a wired broadband dsl router to provide another layer of security for my computer running ubuntu. I just plugged it in without installing any software etc. It blocks the internet connection.

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Ubuntu Networking :: Ufw Blocking RST Packets When Rule Show Allow It?

Aug 30, 2010

I've setup ufw rules on my system but noticed that the rule i created to allow traffic from my local network is still dropping some RST packets.here's part of the output of dmesg

[43627.361500] [UFW BLOCK] IN=wlan0 OUT= MAC=00:16:ea:03:9c:3a:00:1f:a7:3d:d5:eb:08:00 SRC= DST= LEN=40 TOS=0x00 PREC=0x00 TTL=64 ID=2210 PROTO=TCP SPT=59521 DPT=9000 WINDOW=0 RES=0x00 RST URGP=0


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Ubuntu Networking :: Network Provider Blocking PC's From Accessing Web?

Feb 21, 2011

Today I have tested the networks at several schools in the area,and at the town hall. It is not possible to surf on www on any of these networks using a PC running Linux. My conclusion is that there has to be some kind of filtering of traffic that exclude PC's running Linux. From the same PC I can send and receive email, I can ping and trace (mtr) addresses on www, and I can view webpages that are on servers on the inside of the filtering-gateway. The filter used is InterScan Web Security Virtual Appliance from TrendMicro

I have also demonstrated for the admins at the town hall that using Linux-PC on a "clean" network, surfing is no problem. By doing these small tests I have demonstrated that Linux is not the problem.

Tomorrow I'm going to visit the network providers admins, so that they could see what happens when a PC running Linux tries to access www. What kind of things should I test to document, or find the problems? So far I have just used MTR to document slow respons, wget --no-proxy to document that www hangs and ends time out, ifconfig to show NiC settings, and route.. Could this be a problem with /etc/resolve.conf?

The network provider is the same company that refused to turn on IMAP on the exchange servers, resulting in 3 week without mail at our school. All the other schools had to upgrade Outlook in order to connect to the new exchange-server with MS MAPI settings. MS Gold partners are so nice...

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