Managing and using network connectivity on a unix system

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1answer
554 views

can ping, can't connect by IP - resetting the network fixes it briefly, then it breaks again

I've got one server (CentOS 5), out of a half dozen, that the network flakes out on. When it's 'dead', I can still ping other servers by IP, but if I try to make any kind of connection also using an ...
5
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2answers
3k views

Can't ping broadcast

We're running four computers connected to a hub (yes a hub not a switch) on Fedora 13. They were installed using images from a colleague that has recently left us to go back to school, they may have ...
6
votes
1answer
2k views

avoid IPv6 link local address on interface

I have a setup with virtual Xen hosts connected to a set of VLAN-s. On Dom0, I have set up a bridge for each of my VLAN-s to connect DomU-s to. Bridges are set up in /etc/network/interfaces like ...
2
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2answers
7k views

Configure Atheros AR9285 wireless in Gentoo

My laptop has an Atheros AR9285 wireless card. By following the "Network Configuration" section in the Gentoo handbook I chose the ath9k module. The modules seem to be loaded correctly: # lsmod | ...
3
votes
1answer
3k views

Using /etc/hosts or iptables to redirect site to https:// version

I'd like to have my system automatically take me to https://facebook.com even if I put http://facebook.com into my browser. I can get /etc/hosts to redirect to me to different domains, but it seems ...
4
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3answers
309 views

Ubuntu: On a network with many clients there are two machines that can't access the web via a browser at the same time

Ok I'm pulling my hair out over this one. We have a wireless network with many clients all working well except two Ubuntu clients running 10.10 that can't access the internet via a browser at the same ...
1
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4answers
465 views

suse cannot install software

I just installed suse 11.3, but cannot update the system. Update Applet says: PackageKit Error repo-not-available: Failed to download /media.1/media from ...
6
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1answer
2k views

How to access network without NetworkManager?

If I don't have NetworkManager installed on Debian, I edit "/etc/network/interfaces" and then run ifup eth0. I see that things are different in Fedora 14 (the directory and the command aren't ...
4
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1answer
2k views

Share Internet connection from a Debian laptop to a FreeBSD desktop

I have this situation: My Debian laptop is connected to the Internet via its wlan interface through my wireless router. Recently I decided to install FreeBSD on a very old machine (a celeron 300Mhz) ...
2
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1answer
414 views

Redhat Enterprise Linux 4.7 - Ping problem

When I try to ping some of the IP addresses I get "connect: No buffer space is available" error. Also when I check /var/log/messages, there are some errors like as following printk: 99 messages ...
1
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1answer
263 views

Release a port owned by third party application?

I have been consulted about any way to release a port owned by a third party application that is listening to it. Say the application uses sockets and is listening for an specific port the root now ...
1
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1answer
270 views

VPN issues on web browsing

I'm using Ubuntu Maverick and this is the setup: Our router connects us to the company's VPN through which we can access some internal websites. I have to connect also to a customer's VPN in order to ...
2
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2answers
5k views

How to stop avahi-daemon

I'm trying to disable avahi-daemon. I tried to modify the file /etc/default/avahi-daemon, setting the AVAHI_DAEMON_DETECT_LOCAL=0 instead of 1, but when I connect to a network it starts anyway; is ...
8
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2answers
2k views

How to power off a system but still keep it available on the network

I'm looking into installing a file server on my network, for serving data and backups. I want this machine to be available at all times, but I would rather not keep it on all the time (as to conserve ...
3
votes
1answer
923 views

Under Ubuntu, how do I set a static IP for firewire?

I am using Ubuntu 10.10 on my laptop, which connects to our network wirelessly. Since it sits on my desk next to my desktop, I have a private network between the two using a firewire cable, because ...
3
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4answers
392 views

Bootable image with LAN drivers

I'm looking for an image which will boot quickly (I assume it'll be linux) and have LAN drivers- for sending TCP / UDP packets to another system in the same network. Ideally, if possible, I would like ...
6
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2answers
5k views

How do I add an entry in /etc/fstab for a windows share?

I want to be able to mount our file server's file share (on a Mac OS X server, shared via AFP and Windows File Sharing) on my Ubuntu 10.10 linux laptop. I want to be able to mount it as my normal ...
8
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1answer
446 views

Bandwidth control in linux

How do I control both the inbound and outbound bandwidth in a RHEL 5 router?
1
vote
1answer
341 views

How to do a recursive download with gwget (wget frontend)?

I usually run wget with the -np -r options, but it doesn't include a preview of the queue size, so I'm checking out the wget frontend gwget (on debian). I can't get the recursive option to work; does ...
3
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3answers
690 views

How to calculate the volume of data transferred between two Unix machines

I have two Linux machines that keep pinging each other. With each ping request they attach a data packet in the response. The frequency of the pings can not be determined. How do I determine how many ...
8
votes
1answer
1k views

Dual network connection

I have a usb cellular modem and a Home LAN connection on my Ubuntu 10.10 box. Both work independently. I want to know how to have both connected at the same time, and be able to specify which ...
2
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1answer
2k views

Setting up a wireless to ethernet bridge

I am trying to set up a temporary network using the following hardware [Wireless Router]))) )) ) [laptop] ----- [Desktop] ^wifi (debian) ^ethernet ^(3com Audrey) Looking ...
2
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1answer
471 views

Is PXE in a 802.1x network for LTSP possible?

I have an LTSP server in a network that requires 802.1x authentication. Is it possible to boot the terminals through PXE without disabling the 802.1x authentication? If not, are there alternatives to ...
3
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3answers
2k views

Using bridge utils to connect two computers via Linux

I have been using bridge utils previously to connect my network connected computers to a single interface on my Linux computer. The problem I'm having is when I installed a new Linux (with Slackware) ...
7
votes
1answer
1k views

Shaping outgoing traffic with iptables

On my laptop, when I run any downloads, torrents, etc, browsing is crippled. I read somewhere that you could configure your iptables powered router to prioritize certain network traffic. Could I do ...
3
votes
2answers
6k views

How to use iphone internet tethering via USB with Ubuntu 10.04

What are the steps to use iPhone 3G internet tethering via USB on Ubuntu 10.04? Is there software I need to install on Ubuntu for this? The tethering works fine on Windows.
4
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1answer
957 views

Tunnel through a NAT

I have a router that provides internet connection to a single client device via a wireless cellular data network. This network provides non-public IP addresses which gets natted. I would like to get a ...
1
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1answer
446 views

Stuck on “Determining IP information for wlan0” at boot

In my struggles to install ClearOS correctly, I now have another problem: After the first boot I keep getting stuck on "Determining IP information for wlan0...". It doesn't move forward at all. I've ...
3
votes
1answer
308 views

Trying to set up a server/workstation SLED environment

I'm considering a number of desktop distros for use in our office. It seems like SLED matches what I want more than any other distro, especially home user focused distros. In an attempt to learn more ...
3
votes
2answers
2k views

Run daemon on startup in Fedora 13 after wireless interface is up

I want to have radvd (the IPv6 router advertisement daemon) run on startup on Fedora 13. However, the network interface that it will use must be up, otherwise the daemon won't start. If I run the ...
3
votes
2answers
977 views

Difference between wget versions

I have problem with wget behavior for 1.10 and later versions. I am using wget to download a report from my app. version 1.10.2: >wget-1.10.2.exe --http-user=trader --http-passwd=trader ...
1
vote
1answer
517 views

How would I go about getting UPnP working on a Slackware server/firewall?

I'm a long time fan of Slackware and I've always had a machine serving as my main server/firewall with the latest version installed. I have it now but I'm struggling to find information on how to ...
4
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2answers
2k views

How to interpret traceroute information?

For example in this pic taken from Wikipedia [Bigger Version] What are all these 12 server names that are listed? I know they are servers that are supposed to be the path that the network packet ...
4
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2answers
430 views

/mnt Directories Disappearing

I'm trying to mount some smb shares on bootup using fstab on a Kbuntu box. Here are the steps I using to accomplish this: sudo mkdir /mnt/MyShare Then I add this line to my fstab file: ...
7
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1answer
4k views

What is the loopback interface

What is the loopback interface and how does it differ from the eth0 interface? And why do I need to use it when mounting an ISO or running a service on localhost?
2
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1answer
2k views

Can't reach DNS through wireless router

I've got a Ubuntu 10.04 laptop, and recently it's had some odd networking problems. It's on the home wireless router, supplied by the phone company, and has no problem talking to anything on the ...
5
votes
5answers
11k views

How to route specific adresses through a tunnel?

There are certain websites/services which I can only access from the subnet on which my server is located (think of the typical intranet scenario). Is there a way to transparently route traffic that ...