Fedora Networking :: Internet Access Restrictions?
May 31, 2011
I have a work network of about 20 boxes most of which are running Windows 7 and one of them is a file server using linux and another is Windows server 2003. Now the local IP is distributed by the router, and no regulation of internet access is done by any of the servers.What I need to do is restrict internet access to select domains, which would probably need DHCP through linux(I think, not really sure), and I need something simple like a 'blabla.conf' file with the allowed websites that I can edit. need to know how to regulate IP addresses through the linux box (all details if possible, I never tried to do that before), and how to restrict internet access also through linux.
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Dec 30, 2010
I am using internet web control through squid... All is working fine only some little bit issues.
(1) Sometime when i tried to open google.com or any site I got message (The requested URL could not be retrieved) Screen Shot Attached.) but again after sometimes same websites will open.
url
(2) I would like to block word 'sex'.. So I have edit squid.conf with the following acl
acl Blockword url_regex sex
http_access deny Blockword
but problem occur in some websites where 'sensex' word found in url. Then squid block 'sensex' url content website also..
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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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Sep 4, 2009
I have installed fedora 11 64 bit on a new computer. I have no problems accessing the computers on my local network, but can not get past the gateway. The gateway is running windows XP with IP address 192.168.0.1 and is named "internet". When I boot the new computer in windows, there is no problem. Here is the output of some commands I saw in other posts with similar problems:
$ /sbin/ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:24:8C:7F:10:0C
inet addr:192.168.0.245 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::224:8cff:fe7f:100c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code]....
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Jul 7, 2010
I installed Fedora 13 on my laptop today after deleting a badly screwed up Windows XP partition. Everything installed smoothly even my Broadcom drivers but I can't seem to figure out how to get Firefox to access the web with a URL.
I can ping Google, and can get to it in Firefox if I use the IP address from the ping, but going to [url] in Firefox will give me an error message about not being able to find the server at the web address. I was also able to update from the terminal with yum update just fine. I've tried searching Google for some answers, and maybe I just can't phrase my query right, but I found nothing that I could use to try and fix my problem.
I've attached a HardInfo report which I hope could be useful if you need to know what my hardware is (an HP Pavilion zv5000 laptop).
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Aug 14, 2010
I've installed Fedora 13 on a Toshiba Satellite A40 laptop, and am trying to get the wired ethernet connection to work. Network Manager says it is connected, and the connection details (DHCP assigned IP, gateway, dns servers) all seem correct. However, I cannot browse the internet. Checking for updates fails also. I have tried pinging various sites and the results are inconsistent - sometimes it works, sometimes it times out with "unknown host". [URL]... I've searched around for similar issues and tried disbaling ipv6 both in Fedora and Firefox, but this doesn't help either.
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Apr 29, 2011
After upgrading to F14 from F10, we seem to have access to the internet from our console, and no one is able to connect to server as well. We have static IP from comcast. And all the configurations on the eth0 looks fine. We are able to browse, if we set the server to dynamic ip. Also, we are able to connect another PC (laptop) with the static ip configuration, and browse fine. Read through many messages on this forum, cant get any clues,
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Mar 12, 2009
when I try to connect to internet SELinux give my a preventing NetworkManager here is what its say:
Code:
Summary:
SELinux is preventing NetworkManager (NetworkManager_t) "getattr" to /dev/ppp
(ppp_device_t).
[Code]....
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Mar 16, 2009
I see from the netspeed applet that my computer is downloading stuff almost constantly. Not a whole lot, 8b - 700b per second while apparently doing nothing. Some of this is just responding to broadcasts from the router, but surely not all. I would like to be able to determine which programs are accessing the internet over that wireless card, with a view to cutting down on my bandwidth usage. Is there a program that can tell me which ones are doing what at a given time?
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May 8, 2009
I am building a CarPC which I'd like to have wireless internet access on. I have Verizon phone service so if there is a Verizon air card (not wireless card, an air card so I can have constant access without having to search for hot spots) that would work with Fedora 10 I would be very happy. I don't really know where to start and I can't find too much on Google, so I'm just looking for what options are available.
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Jun 16, 2009
Fedora 11 is completely unable to access the internet for some reason, and after some troubleshooting, I've determined the problem to my Motorola 2210 DSL modem. I know my connection is working fine, as it works perfectly in both Vista and 7. I've tried things such as grep 'Ethernet' /var/log/dmesg, filling in the information into the network settings manually, to no avail.
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Aug 7, 2010
Bridged successfully but cannot access the Internet.I installed VMware in my Fc13,and installed XP sp3 in the VMware.I can access the Internet in XP,I set the network as Bridged with Fc13,but Fc cannot open a page,but I ping google.com,it can display: Code: Pinging google.com [64.233.183.104] with 32 bytes of data:
then nothing.I still cannot access the Internet in my Fc13.
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Oct 4, 2010
I tried to preupgrade to f14 and cancel it after some time. Now, I am facing a problem that I cannot access internet from mobile broadband; but I can access net while i am connected via ethernet or wireless. I have cleared preupgrade files with
Quote: yum clean all; yum remove @preupgrade
$ uname -rs Linux 2.6.34.7-56.fc13.i686.PAE
It can detect my HUawei modem and creating an IP as well. But no Internet. Can you tell me the reason?
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Jul 30, 2011
I followed the instructions mentioned in this thread carefully [url] Despite this, I am unable to connect to the internet. It just says connecting and connecting, but it doesn't connect at all.
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May 3, 2011
How to create a user account on a Linux desktop machine with restrictions on connecting to the LAN, WAN, PCMCIA ports, Firewire, CDROM and generally any user controllable output options?
I have the task to set up a machine for users working with sensitive data that should not be leaving the machine where it is processed. This means disabling access to the ethernet device, lan, all other ports as mentioned earlier, and any other way of leaking the data.
In Mac OSX this was achieved using "Parental controls" from the System preferences; this even allows a selection of the applications that can be used. Under XP, Device Manager offers the option to click various devices and "Disable" them, which worked so far just fine. Some will point out that the latter mentioned OS may be easy to circumvent the security of in other ways, but that has been mitigated with other measures and it's not the point anyway. For the operator users in question, the aforementioned measure proved successful and worked.Using OSX and XP to do this was a 10-15 minutes job with testing included.
So far all guides and tutorials pointed to useradd, groups an facl, but in actual practical terms did not help at all, in fact most of the research did not render any practical results so far. I surely don't expect to point and click, and would gladly run a set of commands from CLI. If I had them. I would really would like to achieve the same restricted user account configuration in a concise, comprehensive and practical manner under Linux too. Preferably tested on humans before, and known to be workign, of course.
The machines that need to be set up are two laptops running Ubuntu. So how can this be accomplished in Linux?
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Aug 15, 2010
I am coming from Windows XP Pro, on the same machine (and where I am writing this post from) so the internet clearly works on XP. On F13, the eth0 connection is activated and the drivers for the NIC chip were installed with the OS. The NIC is Intel Pro/100 VE. The problem that occurs is that the system updater (in GNOME) can access the internet, and installed a bunch of updates after installing the OS. I know it can get to the internet because the updates worked and in the System Monitor, I can see both uploading and downloading occurring during the updates. Now the problem is that when I open FF, I can't seem to get to pages, and I get the usual FF error (pic -- [URL]). However, I CAN get to [URL] as well as [URL] , but I cannot access several other subdomains on fedoraproject.org . I also cannot get to any other page online, ([URL] for example).
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Dec 25, 2010
I am using MTS datacard. I have usb_modeswitch installed and have configured the wvdial.conf file. When I do sudo wvdial cdma, the IPs and DNS addresses are also allocated but I still cant access internet.
Code:
dmesg | grep -e 'tty' -e 'modem'
is:
Code:
[ 0.000000] console [tty0] enabled
[ 11.098238] USB Serial support registered for GSM modem (1-port)
[ 11.098352] option 6-1:1.0: GSM modem (1-port) converter detected
[code]....
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Mar 1, 2009
I have a fedora 10 box with two network card on eth0 I have a pppoe connection to the internet, on second card eth1 I share my internet connection end I set up a samba server but I don't know if the settings are good. How to do this settings right to work fine, the ip are assigned by dhcp I don't use any static ip .When I try to browse the internet from the other computers some site's like {.com ; .org ; .info} are block, other site from {.ro} are working. Someone tell me something about turn off all my filters, but I don't know where to find this filter to turn it off. And when I use samba I can't have and internet access or vice versa. My network look like that:
Code:
eth0
|<--pppoe connection
|
MyComputer
(fedora 10)
|
eth1
|
switch
|
comp.1 comp.2
Win OS MacOS
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Dec 30, 2009
I have a wired lan at home with 2 XP boxes connecting to a router to a DSL modem. I want to network my laptop, running only fedora os, for file sharing, printing and internet access. I will be using the laptop probably exclusively for creating/maintaining a Drupal-based (LAMP) e-commerce site to replace our old one for our small family business.
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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 (192.168.0.1) and a subnet mask (255.255.255.0); 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 (192.168.0.1).
-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 (192.168.0.1). 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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Jul 6, 2011
I connected my laptop running with Ubuntu 11 in the LAN but I couldn't access internet.But I could ping to the other computers connected in the LAN. I tried the same thing with windows 7 in the same laptop and I could access internet.
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Aug 26, 2010
I have a linux box (fedora) with two ethernet cards eth1 and eth2. On eth1 I successfully configured a PPPOE internet connection. Such that from the server I can browse the internet. On eth2 I wired it to a wireless router essentially to provide the wireless cloud. On eth2 I also configured dhcp, such that the Linux box is both PPPOE and DHCP server.However my clients on the LAN cannot access the Internet.
On passing the routing command I get
Destination Gateway Iface
196.44.x.y 0.0.0.0 ppp0
192.168.1.0 0.0.0.0 eth2 (my subnet)
0.0.0.0 0.0.0.0 ppp0.
The router (functioning as a wireless access point mainly) has a fixed IP address of 192.168.1.2 and eth2 has IP address 192.168.1.1. The dhcp file running on Linux has been set with option router (Gateway) 192.168.1.1. I cannot figure out how to correctly set the routing table such that my clients on wireless can access the internet cloud. I googled and googled but no solid solution. Any suggestions?
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Dec 10, 2010
'm a bit familiar with Centos as I have set up few website on this environment but I have never actually installed, and especially, configure ftp server. Now I need to do this. Simply I need to be able to create an access account for a user and then restrict access to only one folder within the website (idea is to allow this user to upload images via ftp). I did google for ftp servers and read about vsftpd but I couldn't find any tutorial on how exactly make it work with folders and specific users.
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Jul 22, 2010
I have a computer with two interfaces (eth0 and eth1), eth0 is connected with a local network and eth1 is connected to the internet, also it implements a NAT in the interface eth1. Nevertheless, I'm trying to create spoofed packets with sockets raw in the computer that runs the NAT and send the packets to the interface eth1. The problem is that the NAT is changing the IP source to the real one before send the packets. So, anyone have any idea how can I implements the NAT in eth1 but only apply the NAT to the packets that are from/to eth0? I was thinking in something like (I am really newbie with iptables):
iptables -t nat -A POSTROUTING -o eth1 -i eth0 -j MASQUERADE
Well, it didn't work.
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Jun 22, 2011
While I successfully configured an IPsec-VPN (I use a similar tho modified setup like this:[URL].. I am now stuck on the next steps. While I can connect to everything I want, I need to configure "access-groups" and/or "users".
The scenario is similar to this: Lets say Host A, B and C allow SSH-Connections and some weird non-standard UDP-Connection from Host-VPN, and are also accessible on other ports with public IP's (like http).
I now want to limit, that an admin-user has access to all of them, while trainee-admin only can access everything on Host B and C, and CEO only can connect via telnet to Host C - and all users can be roadwarriors
(I made this example up to give you an idea what i'm trying to do - hope it makes sense). Now my question is, if someone can point me towards a direction, as I'm quite clueless at the current moment as to what to try. I know that commercial IPsec-Implementations can do this, but can OpenSWAN/... give me something similar?
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Sep 5, 2010
How can I get rid of all policykit restrictions that fedora 13 has? I just upgraded from fedora 10 and of course my freenx sessions are again unable to do anything useful like mounting a drive. Difference is no GUI now to help fix this. So I would like to get rid of all restrictions.
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Nov 29, 2009
I've just set up a webserver and forwarded ports 80, and 22, and I cannot access the inernet on that machine but I can connect via ssh and visit a page on the server when on a different network.When I put the router in dmz mode I can connect to the internet properly.
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Jan 14, 2011
I have an old Debian distro (2.6) and it is completely stripped down, containing only the very bare minimum in software packages in order to function.I would now like to get internet access on this computer and I have installed a network card and connected it to an ethernet port however I am not sure where to go from there (i have little linux experience when it comes to installing/removing hardware and software).
Would I be right in saying that I need to install some kind of network/internet package in order to gain internet access? If so where would I get this from? and if so is this package likely to interfere with other packages I have installed? preferably I would like to leave everything else as it is. Frankly it only just works in its current state and i don't want a network package updating other packages and ruining all the dependencies and making my life hell :P
To clarify: I do not currently have internet access on the computer in question so I cannot use those fangled console command that download and install packages automatically. I also do not have a Debian CD, nor am I interested in downloading the 30discs worth of Debian distro as this internet connection is super slow
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May 9, 2009
I'm having a problem with my wireless router and I don't understand the source of it. I have a DLink 604 router since couple of years and it work without any problem. It is attach to a cable modem. Recently I tried to connect a wireless router (DL 624) in the same setup. But it refuse to connect (etho) to the Internet even if Knemo tell that my computer is connect. I tried everything: disconnect the modem, the router, reboot, update my firmware, disable the wireless, disable DHCP...name it. So I thought my router was the problem, so I just purchase a new one (DIR-628) and guess...the same problem. And as soon I reconnect the DL-604 everything is fine. So there is something with wireless router that I don't understand. And I don't have to say that the Wireless connection doesn't work either. Any clue of what can be wrong. Bye the way I use Mepis 8.
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Nov 24, 2009
I have searched for days on Google and can't find a clear answer to my question. I have a NT4 PDC which I am migrating to Samba 3 (Version 3.4.2-47.fc12) on FC12 with kernel(2.6.31.5-127.fc12.i686). I am using tdbsam as my passdb backend.I setup Samba as a BDC and then joined to NT4 Domain succesfully. When I go to vampire the accounts I get lots of errors and some user accounts get transfered over. It turns that all the user accounts that transfer are those that don't have a capital letter in their username on the NT4 domain server. Most do and don't get transfered. There seems to be errors with my groups and Computer accounts.Is there a way to change the requirements in Fedora 12 for username, groups and computernames?
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