General :: Any Way To Block Specific Websites?
Jul 28, 2011How to block unwanted sites.
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Networking :: Block Specific Websites - Preferred Method ?
May 19, 2010I'm trying to block specific websites, preferably using a portion of the url.
For example, if blocking [url], [url] would also be blocked. This implies that simply blocking a single IP using iptables would not work well.
The names to block will be somewhat dynamic, so a list specification would be ideal.
In my case, the LAN has a mix of linux and ms machines, and they all use a linux gateway currently running dnsmasq.
I find suggestions from using /etc/hosts (might work with yp, but not ideal) on the gateway machine, through to using squid on the gateway machine.
Ubuntu Security :: Block All Websites Except Desired Websites?
Apr 12, 2010I want to block all websites except desired websites.
View 3 Replies View RelatedGeneral :: Block Windows Update And Certain Websites?
Jan 24, 2011I'm live in a place where internet bandwidth costs an arm and a leg. I have been playing around with Clear-Os, and would like to know how to block windows update and certain websites.
View 2 Replies View RelatedGeneral :: Setup A Proxy Server To Block Access To Some Websites?
May 22, 2011i was tasked to setup a proxy server to block access to some websites. i'm using centOS 5 and Squid 7:2.6 STABLE21-6.e15...i appended the following and tested the configuration with the supposed server i am using and the it does seem to work but now i'm wondering how i can test it with a client computer..i have 2 LAN cards and i just connected the other to one PC (can a direct connection work or does it need to pass thru a switch or hub)...i just can't figure out how it should be... how do i configure the 2nd LAN card to use this computer as its proxy server?
View 8 Replies View RelatedServer :: Sendmail: Block Specific Sender To Specific Recipient?
Oct 1, 2009I'm trying to configure our mail server to block email from a specific sender reaching a specific recipient. In other words, if one of our employees is getting harassed by a 'stalker', how would one go about blocking, at the MTA (Sendmail) level, a specific sender email address from reaching a particular users inbox? We do not want to capture the email - simply block it before it consumes server resources.The Sendmail server (MTA) is a front end to our Exchange server so no user accounts exist on the Linux server. We simply use it as a SPAM and Virus scanner then forward clean email to the Exchange server.
View 6 Replies View RelatedGeneral :: Block A Specific MAC Address?
Feb 5, 2011how to block a specific MAC address
View 2 Replies View RelatedGeneral :: Block A Specific Content Using Squid?
Aug 24, 2010In Iran there is a famous "access denied page" that redirects you to a strange page with a lot of HTML errors and lol, telling you RTFM about ridiculous Internet laws.I want to filter the contents of the page, because the page IP, URL, ... are all unknown.I don't know much about squid configuration scripts.I can read but cannot write
View 1 Replies View RelatedGeneral :: Block A Specific User To Run SSH And Leave Him The Access To FTP?
Jun 19, 2010I run the openssh daemon on port 22 and have the proftp running on port 21. I would like to block SSH for a specific user.I use proftpd.I would like to prevent the SSH access for this user and leave the FTP working for this user specific.Into /etc/passwd, I tried to change the /bin/bash to /bin/false, but this blocks both SSH and FTP access for this account.
View 3 Replies View RelatedDebian :: Block All Websites And Then Allow Only One?
Oct 6, 2009My name is hentry varghese.i want to know how to block all websites and then allow only one.fof example:"www.gmail.com".please give me the complete commands one by one to do that.
View 1 Replies View RelatedGeneral :: Display Specific Block Of Contents Or Lines In Output?
Apr 23, 2010Consider a situation in which you want to display only specific lines of contents from a file or of a command's output. Yes, we have head and tail commands. But, how to view all the lines of a file except the last one or vise versa when we don't know the count of lines in advance?
Consider this output:
Code:
[root@localhost ~]# ps au | grep bash
root 6316 0.0 0.0 4672 1440 tty1 Ss+ Apr22 0:02 -bash
root 20847 0.2 0.0 4672 1432 pts/0 Ss Apr23 0:12 -bash
root 21167 0.0 0.0 3920 660 pts/0 S+ 01:00 0:00 grep bash
Here, I don't want the last line (in italic) to be included in the result since the last line is due to "grep bash" in the devised command "ps au | grep bash". Well, we can rewrite the devised command:
Quote:
"ps au | grep bash | head -n 2"
But, again, here we are specifying the count of lines to be included. But, in the presented problem we don't know any count in advance!
Security :: Block Websites In Proxy?
Jul 1, 2010here i would like to inform you that my company ask me to block facebook site at the work time it is: 08:00-12:30 and 14:00-17:30 in proxy server.i'm still confuse how to do!i need the details configuration in squid regarding how to block the sites
View 2 Replies View RelatedFedora Servers :: Apache To Block Old Websites?
Apr 8, 2010I have got a small queston: I have got several websites and some time ago I decided to delete some of them. As a result there is no virtual hosts on my web server, but if I will go to my_old_website dot ru I will be redirected to one of my current web sites (or if I will paste an ip address in browser), I want to know, how to block this?My virtual host's looks like this now:
Code:
<VirtualHost *:80>
ServerAdmin my_mail
[code]...
Ubuntu :: Dansguardian And Block Secure (https://www...) Websites
Nov 1, 2010I have installed Dansguardian on my little brothers laptop (using Tinyproxy and Firehol too) and I have it mostly configured the way I like it. The only problem now is that I can't seem to block secure (https://www...) websites, and he knows a few proxies that use secure domains. I was wondering if anyone has been able to make Dansguardian block these websites or is it just not doable?
View 1 Replies View RelatedUbuntu Security :: Block Websites With Nonsudo Password?
May 30, 2011I want to block a list websites from myself using a password that I don't know.I would randomly generate it or something.Everything revolves around sudo, though, so I don't know how.Long to short: how do I blacklist websites using a password other than my sudo password.
View 2 Replies View RelatedSoftware :: Get Squid Proxy Server To Block Websites Using Webmin?
Jul 17, 2010i have been looking up ways to block websites in linux but most all of the free ones only block the sites the software makers want to (or you can't block just the sites you enter without blocking the sites that it wants to)i need to know how to block only websites i enter with squid using webmin
View 3 Replies View RelatedCentOS :: C5 Restarts Everytime I Go To A Specific Websites / Fix It?
Mar 24, 2011I have centos 5 installed. and i use a firefox 3.6 browser on it. the problem is that whenever i open some sites like facebook, or easyxdm.com, or some others, the screen just gets hung up and the os either restarts or remains hung up.
View 2 Replies View RelatedUbuntu :: Block IPs When Hitting Specific URL?
Feb 11, 2011I've noticed in my Apache logs a lot of hits to a specific URL on my server. The thing is, the URL is invalid and returns a 404. Every hit has a different Agent ID (things like Windows NT 4 and IE 8, Mac OS and Safari, Windows 7 and Mozilla, etc) and usually a slightly different IP address. If you browse the URL with Chrome/Firefox, it gets reported as potential phishing activity - despite it only returning a 404 error.
I blocked a range of IPs with IPTables which worked for a while, but I can see the IP address has changed again (outside of the range I set) and is generating logs again.
Is it possible to automatically block any IP attempting to access this specific URL?
Networking :: Generic Way To Block Specific Port?
Jul 9, 2011Recently I discovered that we were accidentally running a POP server (port 110), when we only should have been running the encrypted version thereof (port 995). This wouldn't have been a problem if the port was blocked in the first place. I had wrongly assumed that any port NOT specifically listed in one's firewall rules (CentOS 5 with default iptables installation) would be blocked. I thought you had to add a rule to /etc/sysconfig/iptables in order to open up a port. Apparently this is NOT the case. So is it true that if I install some random software that starts listening on any number of ports that I have not specifically mentioned in /etc/sysconfig/iptables that it will not be blocked - it will work right away?
Anyway, I guess two questions:
1) What's a generic way to block a specific port? I use rules like this to "open" ports (although is this not needed if they're open anyway?)
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 995 -j ACCEPT
What's the analog of this kind of rule to *block* a port?
2) Is there a better way to configure iptables to block all ports that are not mentioned in its configuration? Is that dangerous? (will it block things that I don't want to block?)
OpenSUSE :: Can Apparmor Block Execute Any Program In A Specific Dir
Jun 10, 2010prohibit execution of any program include shell command, only be profiled program could be executed, can apparmor do that?
View 5 Replies View RelatedSecurity :: Block Computer From Connecting To A Specific IP Address?
Feb 13, 2010I was taking a peek at the active connections shown by the Firestarter GUI and noticed the following (the source is my computer):
SourceDestinationPortServiceProgram
192.168.0.11266.235.133.4280HTTP
I closed all Internet related apps and the connection persisted. After a reboot it did not reconnect (yet).The IP address appears to belong to esomniture.com - some sort of web analytics company. How do I prevent my computer from connecting to these rascals. I have found a lot of documentation regarding stopping inbound connections to services on my computer but not the other way. I have various filtering addons installed in Firefox however, this connection seems to be at a lower level as no program is specified as being responsible for the connection.
Programming :: Count Specific Entries Inside A Block?
Jul 15, 2011What I want to do is from a file having block like
<event>
8 3 0.2685416E-02
2 -1 0
21 -1 0
[code]...
The first line after the "<event>" is its process-id, so I would like to have at the end a summary of how many "event" block I have for each type, ie how many
6 1 0.2685416E-02
or how many
7 2 0.2685416E-02
etc etc
I do not know in advance how many different-kind of block I will have, so it has to be a bit smart to scan the file, and make an new "summary" info for each unique type I was using something like
awk '/<event>/,/</event>/{if ($3 -eq 0.2685416E-02 ) { print $1" "$2" "$3}}' file > out
and then
grep -c "$1" "$2" "$3" but with no success since my awk commands prints all lines of each block
Suppose, that in advance I do know the $3, ie the 0.2685416E-02 which is a kind of weight
Server :: Block Email From Certain Group To A Specific Email Address?
Apr 29, 2010Is there a way of allowing only certain domain to send e-mails to certain specific e-mail address. I am using Sendmail, and I have an alias which translate to certain members of staff within my organization. I don't expect e-mails from outside our domain to be sent to this alias e-mail address.
View 1 Replies View RelatedGeneral :: Change A Specific Characters To Capital In A Specific Text?
Dec 2, 2010for example
else {
for fileDOC in $location/*.doc
do
[code]...
General :: Run A Program For A Specific Amount Of Time Starting At A Specific Time?
May 18, 2010I want to record an internet radio station starting at 2:00am tomorrow morning. The specific program on the radio station lasts until 6:00am. The command I need to run to record the station is: Code:mplayer http://wjcu.jcu.edu:8001/listen.pls -ao pcm:file=indie_heat_of_the_night.wav -vc dummy -vo nullI'd use cron, but 1. I'm not sure how to and 2. it seems unnecessarily complicated for something that I only want to run once. If cron is the only/easiest solution, I guess I'll just have to resort to that, but I'd rather not.
View 12 Replies View RelatedGeneral :: No Websites Loading Using Iptables Nat
Sep 18, 2010I'm using a 3G modem whilst o2 transfer over adsl. trouble is no websites load but I can resolve domains. I enabled masquerade on the PPP0 ( modem) interface. added the server as default route for all workstations.
iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
net.ipv4.ip_forward = 1″ to /etc/sysctl.conf
General :: Creating WebSites Without Cpanel?
Dec 14, 2010In the past I have always used Cpanel to create my web directories and databases. I would like to move away from using this panel and like to learn to create it all from the prompt.
View 5 Replies View RelatedGeneral :: Books Or Websites In English
Apr 17, 2011Please recommend me the best book in English Language and the best website in English Language that teach me Linux step by step.The PDFs of the books are better!!I just want to learn LinuxOS as deeper as I can！！！
View 9 Replies View RelatedGeneral :: Get The CnM Minibook To Run Flash Player Websites?
Feb 1, 2010I am a techie but a TOTAL linux novice. I am trying to get the CnM Minibook to run flash player websites, in particular Club Penguin. I have downloaded a command line program to run and I have found out some basic commands but I do not have a clue where to begin. Can anybody help? I do not know what version of Linux it is but the browser is Bon Echo.
View 5 Replies View RelatedGeneral :: Automatic Login Passwords For Websites Gone?
Feb 25, 2010all the sudden i have to start typing in the nm keyring password and subsequently all my website logins
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