Ubuntu Networking :: Access Blocked Sites By VPN And Unblocked By Direct ADSL?

Nov 21, 2010

I am in China, where some web sites(....., facebook, etc) are blocked. So I have to access these blocked site by VPN. But how can I access blocked sites by VPN and unblocked sites by my direct ADSL?

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Ubuntu Security :: Some Sites Blocked - Accessing Some Sites - Amazon Paypal And Bigstockphoto Really Slow

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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Ubuntu Networking :: The Phone Can Access The Internet Through The Computer Unable To Get Access To Https Sites, Like Webmails

Dec 31, 2010

I managed to configure my W890i phone to get access to internet through an ubuntu-based computer. It's very easy to use the phone to give internet access to the computer, but the opposite is quite more tricky. For that I've done the following

----On the phone---

-Set the USB network option to "through computer", so that the phone uses the computer's internet connection and not the opposite.

-Decide and set "Shared Network" parameters: user, pasword and workgroup.

-In "conectivity-> internet connection" set "allow local network" to "yes"

----On Ubuntu 10.04---

-Install samba, samba-client, smbfs, smbclient, firestarter and dhcp3-server

-Configure Samba (System-> Administration-> Shared folders): same workgroup as in the phone, add new user (the phone), passwd this new user. In my case the user was called "w890i" and the password given was the same.

-Once the phone is connected to the computer through USB (then select "phone mode"), a new connection appears in NetworkManager: usb0.The aim is to create a shared network that gives internet access to this device. Edit the IPv4 parameters of this new connection, set them to Manual and give an IP adress ( and a subnet mask (; the rest of the fields are left empty.Connect this network.

-Set firestarter to use dhcp3: sudo ln -sf /etc/init.d/dhcp3-server /etc/init.d/dhcpd

-Launch firestarter and follow the wizard. Set "allow internet shared connection", choose the device for the primary internet access, and then the device for the shared network (usb0). Then change the settings for firestarter: activate DHCP for local network, set IP to the one we gave before (

-Open dhcp3-server config file sudo gedit /etc/default/dhcp3-server And set INTERFACES="usb0"

-Set the policies of firestarter: in incoming connections, allow connections from the IP adress given to the phone ( Then add rules for the ports that need to be open for this connection. I opened HTTP, HTTPS, SMB, SMTP, POP3, IMAP, IMAPS, DHCP for all the connections in the local network.

-Apply policies and start the firewall.


After all this, the phone can access the internet through the computer. Two problems appeared:

1. I couldn't get access to https sites, like webmails. The phone gave a "communication error". But then I tried with Opera instead of the browser built in the phone's firmware, and I could finally get to https sites.

2. I couldn't retrieve mail, neither POP nor IMAP nor IMAPS. I thought it was a firmware problem again, and I tried out several mobile phone email clients written in java, but none of them worked.

So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection

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Ubuntu Servers :: Squid Configuration, Allow Blocked Sites Only For 2 Users

Jan 18, 2011

My Squid is working. But I do not know how to unblock a proxy for two users on my network. My configuration

acl work src
acl sites dstdomain "/etc/squid/sites.acl"
acl files urlpath_regex "/etc/squid/files.acl"
acl boss src


How to enable blocked sites and files for boss and it_user?

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Fedora Networking :: Can't Get Access To Internet Through ADSL?

Mar 7, 2009

I have an valid account,and I used pppoe-setup to set the dial correctly.After the configuration,I typed "ifup ppp0",nothing wrong happens(no news is good news?).Then I typed "pppoe-status",it said I've connected to the internet . I opened firefox,updated my system through yum ,they all said I haven't connected to the network!!!I've formated my harddisk and reinstall my system,but the problem is still.

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Ubuntu Networking :: Connect Only One PC At A Time To Adsl Router/modem For Internet Access?

Apr 1, 2011

I have 2 pcs at home. I dont have a switch so I can connect only one PC at a time to my adsl router/modem for internet access. In the past I had successfully connected the two PCs (NIC to NIC) to each other using the same ethernet cable which was supplied with my dlink adsl modem.

Recently the motherboard of on of my PC went bad so I replaced it with a new one. The problem is when I connect the two using the same Ethernet cable they won't connect. The lights on the Ethernet port won't light up. I can still connect both of them to the adsl router (NIC to Router) (one at a time).

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Fedora Networking :: Configure ADSL Using Use Fc10 - Ethernet Cable <Asus Am608 ADSL Modem>

Aug 6, 2009

I want to configure my ADSL but I don't know what should I do. Can you explain me How can I configure it?(I use fc10, ethernet cable <Asus Am608 ADSL modem)

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Networking :: Iptable Rule For Blocking Direct Internet Access

Jun 13, 2010

i have the following system in my lan.

etho(private) -
eth1(public) -

squid server at

my request is that i have to make all out bound internet connection should go from proxy server , not directly to firewall. Please specify a iptable rule for blocking direct internet access. my clients ip ranges from to

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Ubuntu Networking :: Cannot Access Certain Ports Via Web Browser, Outgoing Port Blocked

Aug 12, 2011

I have a vps server running certain services which can be accessed via a web browser (e.g webmin control panel), but I have recently been unable to access these services from my home machine using Firefox 5.0, running ubuntu 11.04.


I can access the server on port 80 fine, eg: [URL]

However I cannot access my webmin control panel on: [URL]

The pages takes ages to load and then times out. Same with transmission-daemon on: [URL]

Everything is set up fine on my server, the ports are open in firewall etc. and I can access these pages fine from my work computer.

This has only started happening in the last day or two and had been working fine up till then. I have not messed around at all with the firewall on my home machine. I have tried other browsers besides Firefox with same result.

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Ubuntu Networking :: Can't Access Any Internet Sites?

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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Ubuntu Networking :: Can't Access External Sites

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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Ubuntu Networking :: Unable To Access Some Sites Via Ethernet Connection

Sep 13, 2010

Unable to access our site via eth0. Can access the same site, via same ISP on wireless laptop, or via eth0, but using ip annonymizer service. Have a feel that it could be something obvious, but after digging through Modems firmware I am running out of ideas

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Ubuntu Networking :: Slow Loading / Access Of Sites Using Https?

Jul 8, 2011

I'm on Ubuntu 11.04 and have wired internet connection.

Some sites (particularly https) take very long time to load . Sometimes I get "Page is taking a long time to load . Reload the page later" message.

Now , this is happening for some http webpages also.

This is not a problem with browser.

I have firefox , chrome , chromium and konqueror installed.

Also I can access all these sites properly from windows so it is not problem with my internet connection either.

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Fedora Networking :: Setup A Domain Name So Everyone In The LAN Can Access The Sites

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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Software :: Squid 3.0 Access List / Remove Redirect Statement From Iptables All Internet Access Is Blocked?

Jun 11, 2010

I have an old FC2 box running Squid version 2.5. It has been running since 2003 so I am in the process of replacing it. I have a new machine with FC11, iptables, and Squid 3.0 installed.

On the old machine I use iptables to intercept Port 80 traffic and send it to Squid. By default I block all internet access and allow only sites that are in an Allowed_Sites.txt file. Within Squid I also have statements to allow certain users to bypass Squid based on their IP address.

I have set up the same thing on the new box. I have iptables intercepting the Port 80 traffic and sending it to Squid. That is working because if I remove the redirect statement from iptables all internet access is blocked.

The problem I am having is that Squid is not blocking any websites. It acts like the ACL is set to http_access allow all. I have worked on this for several hours and am stumped.

These are my Squid rules:
acl allowed_sites url_regex "/etc/squid/Allowed_Sites.txt"
acl manager proto cache_object
acl localhost src
acl to_localhost dst
acl SSL_ports port 443
http_access allow manager localhost
http_access deny manager
http_access allow Bypass_Users
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
acl our_networks src
http_access allow allowed_sites
http_access allow our_networks
http_access deny all
icp_access deny all
htcp_access deny all
http_port transparent
hierarchy_stoplist cgi-bin ?
access_log /var/log/squid/access.log squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|?) 0 0% 0
refresh_pattern . 0 20% 4320
visible_hostname FC11.proxybox
icp_port 3130
coredump_dir /var/spool/squid

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Ubuntu :: No 3D Cube And Direct Desktop Access

Mar 5, 2011

Running Ubuntu Netbook remix on a Toshiba NB500-upgraded to 2 Gigabytes RAM. Very slow opening applications via the side icons. 8-12 seconds. Is that normal for this distro?
- No 3D cube. Installed related compiz software, adjusted settings, ticked cubes etc. Not a peep.
- No direct desktop access. Only via side icons. Just find it fiddly re: using desktop and changing background via side icons.
Couple other items (MBB for one) but for another category.

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Ubuntu :: Remote Access (SSH Or VNC) Being Blocked

May 18, 2010

I can't seem to remotely SSH or VNC into my machine. If I'm on the LAN and try accessing via LAN IP, it works fine. If i go in through a remote address (my dyndns) or even my home IP, I can't connect (yes, all of the ports are forwarded, I've triple checked this multiple times). Interestingly enough, port 80 works just fine. It would seem as though some sort of firewall is blocking me. I've done this plenty of times before with various machines, and this has me quite perplexed.

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Software :: Direct Access To Key Strikes?

Jul 13, 2010

How can one have direct access to key strikes. Normally the key strikes that collected by the concerned programme and access to the same is not available to any other user programs. I am trying to write a program to simultaneously catch the key strikes. Obviously for this would require a low-level access to the keyboard. How can one do it ?

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Programming :: How To Do A Direct Memory Access

Jul 26, 2011

I have a single board computer previously running DOS. I recently made Linux running on it. Now that the system is running Linux, I have to translate the code that was supported by DOS. The code has segments that allow direct access of memory mapped registers through the macro _MK_FP and do read/write. I have read that where DOS allows this kind of direct memory access, Linux does not. Is there a way to do this in Linux?

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Red Hat / Fedora :: Mailserver Have To Have Direct Access To WAN Or Can It Be A LAN Device With Just One NIC ?

Apr 22, 2010

Does a mailserver have to have direct access to WAN or can it be a LAN device with just one NIC ?

We have two WAN access points.

One is an adsl router joined to the switch and all seems fine for internet browsing.

The other is a wireless system with a linksys router joining by way of PPPoE and this appears to connect fine.

This PPPoE is direct to our ISP and where we need to downlod our mail to our pending mailserver.

When the linksys router is also joined to the switch all devices can use either the adsl or linksys to roam the net. linksys & is adsl.

When I join the linksys direct to the mailserver I will then need two NIC's. One for the Linksys and one for the LAN.

This is where the fun has started.

So.... Can I just have one NIC (connected to the switch) on the mailserver?

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Software :: Unable To Access Hdd Direct Or From Live CD

Jun 8, 2010

I've got an Hitachi Deskstar 164GB IDE drive which I've somehow managed to upset while attempting to swap distros. I'm guessing its lost the MBR as I can't get a PC to see it except in the BIOS. The BIOS tells me that the primary master has 164GB, Cylinders 65535, Head 16, Precomp 0, Landing zone 65534 and Sector 255. (my understanding of that info is very limited). The PC won't boot direct from the hdd and a live Knoppix disc can't see it. Trying fdisk -l produces no list. (Naturally, I can't install another distro on it either).

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Fedora Installation :: Cannot Open Volume For Direct Access

Jul 8, 2011

I am using a Dell Inspiron 14R laptop that came with Windows 7 Home Basic. The partitions of my hard disk before installing Fedora 15 were:
Dell (OEM Partition)
OS (C: ) (Primary Partition)
RECOVERY (Primary Partition)
New Volume (E: ) (Logical Drive)

I tried shrinking my C: drive (which has Windows) but couldn't do so hence performed the procedure on E: instead. I did this to create a 15GB unformatted space to install Fedora in. While installing Fedora, I chose the option "Use Free space" under Disk Partitioning Setup but the OS got installed in E: drive. Currently, I am able to use both Windows and Fedora under dual-boot but the problem I am facing is that when working with Windows, I am unable to see drive E: in Computer.

Windows Disk Manager is able to detect the partition and is showing it to be healthy (1st screenshot). Its name now is New Volume and neither am I able to change its path or letter (Error: incorrect parameters) nor am I able to check it using "chkdsk" (Error: cannot open volume for direct access/ GUI doesn't work as well) (2nd screenshot). On the other hand, I am able to access both the partitions in Fedora.

Another point to mention is that after finishing the installation of Fedora, when I started Windows, the Disk Manager as well as Dell DataSafe showed that the Windows Recovery drive had been formatted (maybe inappropriate terminology!) and was no longer retrievable. To rectify this problem, I restored my Windows to before Fedora was installed and I seem to have got the Recovery drive back (1st screenshot) (before doing this, it was nameless and empty).

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General :: User Processes That Are Given Direct Access To I/O Ports ?

Oct 5, 2010

Normally all I/O goes through the kernel so that it can schedule the operations and prevent processes from stepping on each other. A few special user processes are allowed to slide around the kernel, usually by being given direct access to I/O ports. X servers are the most common example of this isn't it ? give examples for any other processes that are allowed to slide around the kernel ?

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Ubuntu :: Can't Access Certain Sites

Jun 12, 2011

Im having trouble using my wireless usb dongle. I've installed the software and connected to the web, but i can only access a number of websites.

I can access ....., and watch vids and perform searches on google, bing, yahoo and the like. However when i try and access a site that i have searched for it takes me to the internet providers homescreen and tells me to activate my account or top up my account.

I know i have enough GB left as i recently activated my account and i'm able to use the wireless stick on another computer without any problems on all websites. So this leads me to believe that there is maybe a problem with my browser or security settings, but im not sure what to do.

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Security :: Forbidden Access To Some Websites It Says This Domain Is Blocked?

Sep 17, 2010

I don't know is this the right place to ask, but i must ask some questions Here's my problem.I'm a student in highscool,and here we use Linux(ubuntu) OS .Every classroom has like 30 PC's connected with the main computer(the teacher's one) so....3 days ago we were forbidden access to some websites it says This domain is Blocked.By the way the Linux version installed is 7.04(feisty Fawn) i tried disable cookies that did not worked,also tried to whitelist some website,that also didn't worked out

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Server :: .htaccess Blocked Access Host-headers?

Mar 12, 2011

We want apache to server and load our website Only for One specific sub-domain and all other domains should be ignored/dropped or redirect.

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Fedora Networking :: Connected To Router - Can't Load Sites - Can Load Sites In XP ?

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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Ubuntu :: How To Access Ipv6 Web-sites

Jun 2, 2010

I am new to ubuntu,or linux and i used to access ipv6 sites in my Win7 .

after googling around,i find the 'tips' did not work at all, e.g.

i typed "insmod ipv6",but the shell responded "no such file or directory". What should i do ,was it so hard ?

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Ubuntu :: Cannot Access Http Sites?

Aug 2, 2011

How do I get rid of my wubi partition since Ubuntu doesn't work on a Vista laptop. Sorry, it was a gift for Christmas. I never realized Ubuntu was so defective.I am running Windows Vista 32 bit with 3 gigs of ram and one partition from the factory (HP).

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General :: After Re-boot Can't Access Whm Or Sites

Dec 12, 2010

I have a VPS - and I was trying to install gd support for php on to it. Once I had done this I had a 500 Server Error. With the following errors in the log

[Sun Dec 12 07:34:29 2010] [error] [client] SoftException in Application.cpp:574: Could not execute script "/home/perfectp/public_html/phptest.php"
[Sun Dec 12 07:34:29 2010] [error] [client] Caused by SystemException in API_Linux.cpp:444: execve() for program "/usr/bin/php" failed: No such file or directory


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