Networking :: Block Some Sites In A LAN?
Jul 18, 2011
I need to block some websites and torrents on my LAN running on mostly WIndows XP pcs and a Windows 2008 domain controller. It's possible to block some sites using DNS in Windows Domain controller, but users have the rights to change DNS and bypass the rule. Editing HOSTS file doesn't workThen I tried using Avast antivirus Site Block feature, but that doesn't work on any browser except Mozilla. We have to use Epic and Mozilla Firefox.We can't use a dedicated hardware firewall due to budget constraints and the fact that we have multiple ADSL lines for internet. No single gateway.
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Nov 3, 2009
I have FC-4 with Squid and Dansguardian. Internet Users in my organisation are configured to use proxy with 8080 in browser IE. There's no issue with Users as DG working perfect for them. We have Business Development Team, as they need to do most of the research over internet, their IP's are included into "Exception IP List" in Dansguardian. Obviously these people will be excepted from all banned sites, BD Team able to do chat, play games and do social networking and other stuff over the net, which results in more bandwidth consumption and breaking office policies.
I have tried to implement SQUID ACL's to block few sites like " meebo.com, orkut.com,facebook.com etc" but SQUID acl's not coming into picture. any one who successfully blocked chat, banned sites and social networking in DG with my case.
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Apr 8, 2010
How to add parental control like { block web site access, restricting login access for particular time, restrict web access} for particular user accounts in Linux.
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Jun 17, 2011
I want block https sites if suppose block the http it will opening in https.
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Feb 6, 2010
Example I have 3 user list and 3 file with block site names
acl group1 src 192.168.0.2 192.168.0.3 192.168.0.4/24
acl group2 src 192.168.0.5 192.168.0.6 192.168.0.7/24
acl group3 src 192.168.0.8 192.168.0.9 192.168.0.10/24
[Code]...
I've moved your post here to its own thread. Please don't resurrect dead threads. --win32sux
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Jul 15, 2011
how to install squid3.1.x to block https sites?
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Apr 5, 2010
I have a problem with sites or domain blocking by squid proxy server in rehl 5. I have trying lots of time but i'm not succed.pls help me how to block sites or domain in rhel 5.
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Jul 22, 2010
I have setup a squid server on Rhel5.4. I would like to know how I can configure my squid server to block anon proxy sites.
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Jan 14, 2011
I dual boot XP and FC14 and have 2 routers. I can connect and ping one of these routers when I'm in FC and I have an IP address I just can't load any websites. When I connect to the other router (my main router) it works fine. When I boot into XP and connect to the problem router I can load pages fine. It's only when I'm on FC14 and connect to the problem router that I can't load pages even though I have an IP and can ping around.
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Feb 9, 2011
In the past week or so I've noticed some weird network behaviour. I find accessing some sites such as Amazon, Paypal, and Bigstockphoto really slow. Sometimes the page will not load at all. Other sites are fine. The problem sites are not a problem for others on my LAN at home. When I try to open the problem sites, I can see in Firestarter blocked connections coming from 2.1(8/9).xxx.xxx on various ports such as 36007. This only happens for the problem sites. I attached a typical output from firestarter.
This happens with Firfeox or Chrome. Using Ubuntu 10.10
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Mar 15, 2010
I am running Ubuntu 9.04 32bit on a dual boot (XP) computer. No internet problems in windows, and I am currently typing this post on my wifes HP laptop running 9.10. I have no browsing ability on the desktop running 9.04, and updates don't work (in details, every other line fails) But, I can bring up Google, and search it, pictures and all, but cannot go to different sites (ebay, hotmail, amazon as the first few i try). Also, my pidgin works fine, as I am talking on it now. I have tried to turn off ipv6 in Firefox and ubuntu, neither doing anything noticeable.
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Feb 2, 2009
I have an odd Linux problem. Changed ISP recently -- Windows NT4 & W95 work fine. Linux has worked fine on previous ISPs, but on the newest ISP, I can connect successfully on Linux, but can only communicate w/maybe one out of 10 sites (Google, for ex.). Mostly I get "cannot connect to site". Some points:
-Linux is Slackware w/kernel build 2.4.26.
-No settings changed from Linux setup that worked fine on previous ISPs.
-/var/log/Log file says PPP connects via CHAP successfully & no problems..
-I don't see any similarity on the few sites I can connect to -- seems random.
-ISP is useless -- say they "don't support Linux".
-Using Firefox & Konqueror browsers.
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Mar 15, 2010
Its a single PC, I can ping my connection but I cant able to browse any sites..These are my outputs.
Code:
karthick@Learners-desktop:~$ ping -c 3 google.com
PING google.com (209.85.231.104) 56(84) bytes of data.
64 bytes from maa03s01-in-f104.1e100.net (209.85.231.104): icmp_seq=1 ttl=45 time=355 ms
64 bytes from maa03s01-in-f104.1e100.net (209.85.231.104): icmp_seq=2 ttl=45 time=355 ms
--- google.com ping statistics ---
3 packets transmitted, 2 received, 33% packet loss, time 2000ms
rtt min/avg/max/mdev = 355.239/355.534/355.830/0.665 ms
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Jul 16, 2011
I just setup a linux machine that act as a gateway along with squid running in transparent mode. Now I have one asterisk server which is behind that gateway I mean on my local subnet which pass through my linux gateway. Voip server having 4mb up n 4 mb down limit. Clients having 512kbps and upload 2mb.
Linux gateway : controlling band width of each clients
Squid acl forNAT issue with voip sites
Now my question is regarding skype calling. Since skype uses port 80, does it mean that it passes its request via proxy or direct and for safe side I've changed skype incoming port to 443 which squid does not see it. How much and width does skype use for calling in that case. Some one told me that it using squid to pass its request which I don't agree.
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Apr 13, 2009
I can ping certain websites, such as Adobe.com, but I cannot access them via http (i.e. through firefox or yum). Some websites work through http, like Google, while others don't. The ones that don't are always the same.
What really hurts here is I cannot yum to all repos i'd like to. Since the same sites cannot be accessed through firefox, I imagine there is some underlying problem with my system's HTTP setup.
My windows machine on the same network works fine. I have had this problem since I installed Fedora 10 about 4 months ago. I'd rather not reinstall as nothing really seems broken (aside from this http issue), my system is completely up to date.
If I use a public proxy website I can get to the sites I can't connect to directly. I've followed a FAQ from mozilla for Firefox that hasn't helped, but I don't think its a Firefox issue since yum suffers as well. I also followed the fedora FAQ and I have been using OpenDNS servers.
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Jun 16, 2011
I am using Fedora 14 and i am unable to open a few sites e.g
[URL]
I read in the forums that this could be bcoz of ipv6 and i have disabled it(or so I believe )
but still i'm unable to open the site.. the page loads half and gets stuck ...
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Nov 9, 2010
For a while now I've got a problem when surfing the internet. Everythings fine for let's say 15 minutes and then all of a sudden it takes about 1 minute to load a -random- page, once it has loaded, everthing's fine again. Transmission does not seem to have this problem. I'll double check this. Looking thru the forum I found the following "solutions". None of which has worked for me up to now:
- disable ipv6 in firefox
- set method under network manager to "Automatic (DHCP) addresses only" and use google or OpenDNS dns servers
- change resolv.conf (comparable to the second one I guess)
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Jan 22, 2011
I am using Ubuntu 10.04, when connected to the ethernet through , Atheros Communications AR8152 v1.1.I can successfully access the internet. But when I try to use the wireless I can connect to the network using Atheros Communications AR9285, but can't access any internet sites. Or ping any other devices on the network.I'm using an Acer Aspire One D260
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Sep 1, 2011
Strangest thing...yesterday my 11.04 box lost the ability to access anything external. I can ssh to the box from outside my network, and all other boxes on my network are fine, but this one box can't hit anything external. If I attempt to ping a site it's doing the same resolution, but no packets are delivered.
Up until yesterday it was running fine, and I didn't make any changes to my home network or install any updates. Totally stumped.
Edit: this is a wired connection with a static internal IP.
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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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Feb 4, 2011
For some reason my DNS servers aren't able to resolve certain names. Most names resolve fine there are just a few that don't work. Nslookup doesn't work either of course, and curiously neither does "whois".
Here's an example:
Quote:
dig facebookmail.com +trace
; <<>> DiG 9.2.4 <<>> facebookmail.com +trace
;; global options: printcmd
[code]...
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Jan 10, 2010
With hardy, I was able to have multiple SSL sites on the one machine. But I can't seem to get it to work for ubuntu 9.10, I've read that you need to put each SSL site on a different IP. But I was able to do it with hardy without different IP's.
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Apr 30, 2011
The problem that I have been struggling with is while connecting to VPN server, I can't connect to other sites.
I am on 11.04, but this have been happening on 10.10 as well.
On Win7, I was able to browse the VPN and the other sites at the same time without any issue.
I also tried by checking ON the "Use this connection only for resources on its network" option (under IPv4 settings tab) but doing that is allowing me to browse all sites except the VPN site. The method that I am using is "Automatic (VPN)".
Need your help to solve this issue.
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Sep 18, 2009
My problem in ubuntu. Why is there difficulty in accessing mail sites in linux whether other sites are working.
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Jan 15, 2010
I have a question which it believe it is quite simple but I have no clue how to do it... I'm using Fedora 12 and I'm the only Linux machine in my office's LAN... I have Apache (httpd) setup and my co-workers can access the sites perfectly by using my IP address, for example [URL]... So here's the question, how do I setup a domain name so everyone in the LAN can access the sites by typing [URL]..
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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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Jan 20, 2011
I've installed 10.10 yesterday on my old HP Pavillion ze2000 as dual boot with windowsXP and the wireless was working normally, I've updated everything it asked to update, rebooted a few times due to some of the updates. Today when I turned it on it was connecting normally to the router, though when I opened mozilla or tried to ping the router IP on the network tools neither have worked. Couldn't open any site on mozilla or ping any ip although it says I'm connected to my wireless router as it would normally. When I open into the XP my firefox there works just fine.
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May 17, 2011
I had recently installed Ubuntu 11.04 (64-bit) and I have trouble loading websites. I use a DSL (PPPoE) connection from NetworkManager to connect to the internet. Some sites like this forum site, stack overflow, etc. do not load. Firefox 4 says 'loading...' and then finally times out. I can ping these sites though.
I tried 'wget stackoverflow.com' and Lynx both timed out. wget sends out a request and waits a long time for response before timing out. These sites load perfectly well on my Fedora 14 (64-bit) & Windows XP installations and both these OSes have Firefox 4. From this I assumed that this is not a problem with Firefox (or any other browser for that matter) but it has got something to do with the network configuration.
I faced the same problem with Ubuntu 10.04 too. I use a Dell Inspiron N5010.
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Jun 18, 2011
i have a dual boot PC with Linux and windows 7. I have observed that facebook chat doesn't work properly when i use linux. and some sites dont open quickly or dont open at all.But there is no such problem in windows. What to do?
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Nov 17, 2010
I installed F14 on a friend's computer a couple of weeks ago. Today she called me saying that her ISP called her telling her they'd have to cancel her internet if she didn't fix whatever virus was sending port scans to edu domains that they'd gotten complaints from. I thought "well, there's a first"... I've got ssh to her computer, so i shelled in and ran a couple of commands, but i really know very little about how to investigate this kind of stuff.
She's directly connected to her cable modem via cat-5; but she does have a wireless card installed --she just doesn't use it, nor a router, afaik, nor as far as i'd seen when i setup her printer. I googled a bit, and ran a couple of commands, and 1 of them was interesting because it APPEARS that her wireless card is ON and the eth0 is OFF? Perhaps someone will know how to read this output better than i, and the output of the other command that i ran. Also, does anyone know any other ways to properly investigate this one? FWIW, she does use transmission to download torrents.
Anyway, here's the commands i ran:
Code:
[root@localhost ~]# ip link show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00.
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000 link/ether 00:21:97:9b:70:29 brd ff:ff:ff:ff:ff:ff
3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000 link/ether 00:1e:e5:9c:b6:8a brd ff:ff:ff:ff:ff:ff [root@localhost ~]#
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