Ubuntu Networking :: After Upgrade, Machine Accessible By Ip, Not Host Name?

May 14, 2010

I have just upgraded to 10.04 (not ideal I know, thought I would give it a go). Now the machine is only accessible via its IP, not host name. I reinstalled Samba, but still not working

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Ubuntu Networking :: Network Computers Not Accessible By Host-name

Aug 16, 2010

For some reason, all the computers on my network can't reach each other via their host names. For example, the ping command doesn't recognize host names:

Code:

$ ping file-server
PING file-server (208.68.139.89) 56(84) bytes of data.
^C
--- file-server ping statistics ---

20 packets transmitted, 0 received, 100% packet loss, time 19152ms However, ping works fine if I use IP addresses instead. I would put the address for "file-server" in my /etc/hosts file, except for the fact that DHCP changes it's address occasionally.I attempted changing the line

send host-name "<host-name>";
in /etc/dhcp3/dhclient.conf to
send host-name "file-server";

but to no avail.

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Ubuntu Networking :: Local Machine Is Not Accessible From Out Side World

Jul 30, 2010

I m using the pc as gateway....i have two NICs:1) 10.6.15.254 ---> for internal network 10.6.15.02) 10.6.0.115 -----> for out side world I can ping and ssh any out side machine but when i try to ping or ssh any machine in the 10.6.15.0 network it says host unreachable.... i can ping and ssh gateway i.e. 10.6.15.254 and 10.6.0.115 but not the client machine in the 10.6.15.0 network from out side world even i flush iptable rules i can not access any client machine i m using ubuntu 10.04 as operating system..

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Fedora Networking :: File Storage On F10 Machine Accessible By XP Computer

Mar 5, 2009

I want to have my Fedora 10 computer act as file storage and access it from my Windows computers.
Details:
Fedora 10 box is fully functional and connects to the internet using a wireless card to my Linksys 54G router. I've configured the smb.conf file to workgroup MSHOME, and assigned it an IP of 192.168.1.150. I've also set it to turn on smb at boot. Windows XP Home is hard wired to the same router with the standard Workgroup of MSHOME. Windows is set to obtain IP and DNS automatically. There's another Windows XP Home system that's also wireless on MSHOME that I can interact with fine from the main Windows comp. Ping results to 192.168.1.150 results in Request timed out.

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CentOS 5 Networking :: Samba Share Not Accessible From Windows Machine?

Feb 13, 2010

I have Linux installed on one machine with samba running and a second machine running XP. They are going through my router and I am using the same username/passwords for both machines and I have even gone to the point of allowing access to everyone for the share I created and the worgroup in samba is MSHOME just like my XP machine. When I view (or search) my workgroup computers my Linux machine shows up and so do the shares I created but when I try to open them I just get a message that permission is denied and I may not have permission to use this resource. I even tried setting access to the shared folder to 777 but still I can't open this share. Has anyone got any idea of why this is?

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Ubuntu Networking :: Connecting A Virtual Machine To A Host Via NFS

Jul 7, 2011

I am currently running ubuntu on a qemu-kvm virtual machine, and the host is fedora. I would like to mount a folder of the host machine on my VM, but never succeeded. The result of the command is :

root@armnlib-kvm:~# mount -v 192.168.1.10:/nfs /nfs
mount: no type was given - I'll assume nfs because of the colon
mount.nfs: timeout set for Thu Jul 7 06:02:43 2011
mount.nfs: text-based options: 'addr=192.168.1.10'

[Code]....

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Ubuntu Networking :: Can't Get Ssh Into A Virtual Machine To Work - Host And Guest

Jan 28, 2010

I'm trying to ssh into a virtual installation of ubuntu I have, named "ubuntu-x86" but I can't get it to work for some reason. I have two network cards, both assigned to NAT, on the virtual machine, but one has a static IP address, while the other uses DHCP. For some reason, the command:

[Code]....

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Ubuntu Networking :: Server + KVM. Guest Os Can Reach Wan But Host Machine Cannot?

Oct 13, 2010

I've set up ubuntu server 10.04 x64 with kvm and bridged networking and installed win server 2008 as a guest os. The guest os has full access to the network including lan/wan but the host os can only reach my lan and not the wan. This is true even when the guest machine is powered off?I have to admit that my knowledge of networking, particularly with respect to linux is very flakey but surely if the guest has internet access this should also apply to the host? My only suggestion is an issue with mac addresses but i don't know where to start. Has anybody ran into this problem before?

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Networking :: Easiest Way To Redirect External Traffic To VMWare Web Host On Same Machine?

Jul 14, 2009

Have done a bit of Googling around this but got totally swamped so will try here. Basically we are running a CentOS server which hosts a number of virtual hosts under Apache. Recently I needed to set up a development environment for another site using Ubuntu and have this running and accessible on the LAN from a VMWare image. I'm using bridged networking so the VMWare machine has its own IP on the LAN subnet.

I've set up a DNS to point to the external IP of the physical host but can't figure out how to route traffic requested on this domain to the VMWare host. I've basically tried two approaches (configuring a proxy web server and reverse proxy in an httpd.conf file and mucking around with iptables forwarding rules but without success.

Ideally I'd like somesite.somewhere.com to point to the VMWare IP but I could live with a custom port on the end if thats whats required.

To throw further complication into the mix I need reliable communication between the VMWare machine and external mail relay servers in order to debug any issues with mail bouncebacks, embargos etc.

Any idea what's the easiest way to accomplish this?

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Networking :: Samba Setup - Windows 7 Host - CentOS Machine Using VirtualBox?

Jun 23, 2010

I am trying to set up samba in my CentOS virtual machine that is running on a Windows 7 host. I have found a tutorial in the How-Tos on this site but I'm not sure if they are exact and I'm paranoid about messing something up. The link to the tutorial is below. Is there anything that I should do different or anything that I should be aware of? Also, once this is set up, how do I transfer files between the two machines? Please note: I am very inexperienced in the IT field. [URL]...

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Networking :: Isolating A VMware Virtual Machine From It's Host But Still Alowing Internet Access

Oct 31, 2009

I have a WindowsXP virtual machine which I need to isolate from the host machine completely (have the host act as a bridge but not be visible on the IP layer at all.) It still needs to have Internet access. Obviously it has to be able to contact the router but I would like to be able to block port 80 (or even just block all SYN packets addressed to the router.) I also want to allow port forwarding from the router to the virtual machine. I can use basic iptables but this is way beyond me.

The host OS is probably going to be Debian Lenny but this is not built yet so if someone can recommend a different distro which is as lightweight as possible but will support VMWare, iptables and tcpdump then that would be great. I was thinking of Slackware but I have not used it in ages and from what I can remember their is no real package management.

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Security :: SSH Tunnel Not Accessible From Different Machine On Same Network

Dec 16, 2010

I have an SSH tunnel setup between a local server and a remote postfix relay VPS. This is so we can route all our outgoing mail through this SSH tunnel to a private relay VPS, this seems to give us much more consistent mail delivery than using our ISP's relay. So the SSH tunnel is set to route port 1025 on machine A to port 25 on the VPS This part of it is working perfectly and has been for months. However today I wanted to set our e-mail newsletter software (on the same network as the SSH tunnel start-point) to send through the SSH tunnel. So I punched in the IP/port... 192.168.1.5:1025 but it doesn't work. Is there something I need to do to allow connections from other machines on the LAN to access the start-point of the SSH tunnel? Or are SSH tunnels restricted to localhost connections only?

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General :: How To Configure Serial Port Of Virtual Machine With Host Machine?

Jul 29, 2009

I successfully installed the virtual box on my fedora 8 system, and also created a virtual machine with windows xp OS, it works nicely, I try to configure the serial port of my virtual machine and try to configure the path for the port "screen shot are attached" it gives me the error message also the "screen shot are attached" for your review.Is kind of mistake is going on during the path setting, and how to set the path for configuring the serial port of my virtual machine so that I can use the hyper terminal tool of windows.

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General :: Make Some Files On Machine Accessible Via HTTP Using Apache?

Mar 6, 2011

I did a wget on the source and built the apache binaries correctly. Now what do I need to do to get some documents accessible using HTTP (start some services?)? Also, do I need to group all the files I want to make accessible in some directory and make the directory and its contents accessible or can I just make the individual documents available? I will be providing these links to my colleagues and do not want them to be down, so need to make sure that the apache services are up automatically after a reboot. Does apache have some inbuilt support for this?

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General :: Get Virtual Machine (virtualbox) Accessible On Company Network?

Jul 11, 2011

I created an archlinux vm guest using virtualbox on my windows desktop at work. I'm planning to use it for django development because there are no unix machines available to use as a workstation at work.

From the vm guest I can ping/ssh to other machines in the network, but not the other way around. It's like even though the guest machine has an ip address on the network and a hostname, neither is recognizable.

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Fedora :: Directory On User Account Which Is Visible And Accessible To Other Users On The *same Machine*??

May 11, 2011

This is a simple question which hopefully has a simple answer. How do I set up a directory on my user account which is visible and accessible to other users on the *same machine*? For example I have certain files on my account which, if I want another user to be able to access I'd have to (a) copy them to my thumb drive (b) log out, (c) log in to the other account, (d) copy the files from the usb thumb drive

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Fedora Networking :: Using Putty To Connect To A Machine / Host Name And Port To Connect?

Jul 23, 2010

Right now I have a machine set up running Fedora. I have configured inittab to accept Console Logins, but I am having problems getting my netbook running PuTTY to connect. How would I go about finding the Host Name and Port to connect to?

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Networking :: [debian Squeeze] Logging In With SSH Using Machine Name After Modem Upgrade?

Jul 25, 2011

I got a new dsl modem/router today and now for some reason I can't login into an ssh session using putty and windows using the hostname of the debian box. I can login using the ip though. Also, it seems I can still access the debian box via samba/windows explorer using the host name.

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Ubuntu :: How To Host Website On Own Machine

Sep 22, 2010

I've heard that all one needs to do to host a website is to install apache2 and then create my own webpages in /var/www. Like I could start out putting a file "index.html" in /var/www and it would show up on the web.If this is true, what would my website address be on the web?

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Ubuntu Networking :: Transfer Files From Cluster To Host And Then Host To Another?

Mar 4, 2010

I am working on a cluster for a molecular dynamics class and I have to edit my FORTRAN code (only the newest and best for me!). In order to get through to the cluster I have to ssh in. The network on which the cluster resides is behind a firewall, so I have to ssh through the firewall into the network first.

this is fine, I can login and move files and folders as needed, including sftp-ing into host 1, then into the cluster so I can transfer files from cluster to host and then host to me. This gets rather tiresome, so it would be nice to edit the files in place.

The problem is that when I access my code with emacs it launches the emacs client on Host 1, with no mouse support. I know the purists will howl about how I should be using keyboard shortcuts, but I am a chemist and not a programmer, so the mouse is very nice for me. Is there any way I can perhaps mount the cluster using sshfs so that when I open my code it launches a local instance of emacs? Sorry if this is the wrong forum, but I thought it was network related.

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General :: Get Unique Host Id Of Machine C/c++?

Feb 5, 2011

I am looking for c/c++ code (no third party lib dependency) to get the physical address of ethernet card on mother board.Most of them suggests to use the linux commands and process the output. For example "/sbin/ifconfig eth0".The problem with above command is that when you run this on a linux variant which is running using VirtualBox on windows host, it's not returning the correct mac address. In this case the correct mac address is the one set for individual virtual machine."/sbin/ifconfig eth0" works fine when linux variant is installed normally.There is another case when linux variant is installed normally and if you install virtualization apps such as VirtualBox or VmPlayer, they create a virtual adepter for their own use. In that case running "/sbin/ifconfig" returns all the adepters. (physical and virtual)

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Networking :: How To Find Least Busy Host Given Hardcoded Host List?

Oct 12, 2010

I got a bunch of machines (~10) that I share with my co-workers. I have appropriate .ssh file(s) set up so I don't get prompt for password when I try to ssh.Currently I ssh into these hosts and then do a top to check the load before I start using the machine. Because I don't want to be on a busy host.Can someone show me how to write a script that find a least-busy host given a list of hosts to check? (hardcoded is fine)

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Ubuntu Servers :: Image-virtual: For Host Machine Or Guest OS?

Dec 2, 2010

I couldn't find a clear answer to this, but is the linux-image-virtual package for host machines that will contain VMs, or a VM-oriented kernel for guest OS (ubuntu)? I have some guest VMs running on Microsoft's Hyper-V, and was looking for some further optimizations.

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Ubuntu :: Get Other Users On The Same Host Machine Access To Those Virtual Machines Within VB?

Jul 9, 2011

I've installed VirtualBox OSE and have a couple of guest OS setup. I am running Ubuntu 11.04 and VBOSE version 4.x (the most current). Now this installs the guest OS virtual harddrives to a folder in my home directory. How do I get other users on the same host machine access to those virtual machines within VB? Currently logging in as another user and going to Applications/Accessories/VirtualBox OSE ... the list of guest machines is empty save of course on my login.

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General :: Ssh From Virtual Machine To Main Host?

Mar 17, 2011

ok how do you add a rule which allows a virtual machine to connectto ssh on the main fedora host?so connecting from a virtual machine to the main fedora host installation? I think i have to use an iptables command but not really sure

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Server :: Run A Script On Host Machine From A Webpage?

Jul 26, 2011

it was possible to run a script (something.sh) on a server when a button on a webpage is pressed. I already have Apache set up and I will set up php if I have to.

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Ubuntu Networking :: Host Able To Ssh To FreeBSD Host?

May 19, 2010

So here's the setup:

Ubuntu 10.04 host inbound port 22 open
FreeBSD 8.0 host no inbound ports open

Both hosts are running sshd currently. What would you do for the Ubuntu host to be able to ssh to the FreeBSD host? A tunnel?

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Networking :: Very Low Network Performance In Host-to-host Connections

Jan 27, 2009

The internal network is behind nat done by the PC Router.The TP Link is recieving wireless signal from outdoors and it has switching and basic routing capabilities. I'm using the PC router for better routing options.PC Router (or R for short) is a triple-booting machine - Linux, FreeBSD and Windows. It has two lan cards - external (ext_if) - 100Mbps Realtek 8139 and internal (int_if) - 1Gbps integrated Realtek 8169.The problem is that all traffic from R to the network is slow - about 5-20K, while the traffic in the oppoiste direction is all right - about 10MB that is fine for 100Mbps cables, NICs and switches. The problem persist no matter the OS the pc R is running.I've tried some debugging on the situation as follows:

- put another PC at the place of R - everything is fine. That exclude the possibility of damaged cables, RJ-45s, switches and etc.
- connected both of the NICs to the Internet while the internal network is being disconnected and they both work fine (no delays)
- traffic shaping is not running
- there is nothing in firewalls except NATing the internal network (and it is working fine). Actually these firewall rules have been operational for more than months and everything was fine untill a week or two ago.
- changed the internal NIC with another
- connected the internal network directly to the TP and all of the PCs are getting good network performance. Then connected the R machine to the TP as well and there was good performance between the internal network PCs and R.
- R has good performance to the TP. In fact everything has good performance directly to the TP (when not connecting trough R).
- the problem persist only between R and machines from the internal network.

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Ubuntu Servers :: Shared Folders - Transfer File From Host Machine?

May 27, 2010

I have ubuntu server as a guest in virtualbox and xubuntu as my host os. I have a shared folder on my host that can be accessed by my network. I'm trying to use my server without the need to install a desktop, so how would i transfer a file from my host machine to my ubuntu server guest?

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Ubuntu Servers :: Multiple Websites On Single Host Machine Without Virtualisation

Jun 1, 2010

I have this intra net server project going on and now I moved to 10.04 however there are still some things that I would like to see clarification and instructions on. I am interested to set up multiple parallel websites for my apache server, however I am not sure how to do this exactly. Now I have solid address rivera.wippies.net and port 80 redirecting to my server. What I would like to get done is that I get multiple independent of each other websites for my server I was thinking of making websites like this

/var/www/site1 (which would be as rivera.wippies.net)
/var/www/site2 (which would be as rivera.wippies.net/othersite)
/var/www/site3 (which would be rivera.wippies.net/secondothersite)

etc, so that I have multiple "individual" websties for my server. Requirements would be that each of these websites could have SSL encryption as needed available too, since some of the website could have confidential information.

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