General :: Ruptime Not Showing All Machines In Network

Jun 3, 2010

I usually monitor machines in the network via ruptime. But one machine (lambda) acts very odd. It never shows up in the output of ruptime, unless ruptime is run from a particular client (delta). For example, say I am logged in lambda. This is what the output of ruptime and few other commands are:

[Code]...

Linux delta.grp.vpncc.org 2.6.18-53.1.21.el5 #1 SMP Tue May 20 09:35:07 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux Only difference between delta and other machines is the fact that delta is the file server that hosts the nfs directories shared in all the machines. All the machines are in the same subnet. All of them run either RHEL4, RHEL5 or CentOS5. lambda runs RHEL 5.4, delta runs CentOS 5.2. I tried restrting rwhod daemon on lambda, but no change. why lambda is playing this hide and seek with ruptime?

View 6 Replies


ADVERTISEMENT

Software :: Local Machines Showing Up With External Addresses?

Nov 9, 2009

I'm running a "relatively standard" home network environment. That is, I've got a DSL connection to my ISP, and am running a router/NAT environment that connects a number of machines -- Mac, Windows, and Linux -- to the external network. Internally, all the machines have addresses in the range of 192.168.0.x. However, because of the static/NAT address mapping, the machines whose internal addresses are mapped to external static addresses show up at external hosts as 216.xxx.yyy.zzz (the address range assigned to me by my ISP).

The other machines, which are on the network via NAT, show up as 66.xxx.yyy.zzz, the address assigned by my ISP. Finally, I'm running a local DNS server that handles addressing issues for my domains and sub-domains that are hosted on local machines. All the machines use this local server for their DNS, with my ISP's DNS server as secondary. All of this is to say that it's more or less a pretty typical configuration, and, in general, everything is working fine.

Here's where it gets tricky:

* Machine A is a Fedora 10 linux box, which hosts an externally visible domain and runs, among other things, a web server. It's assigned to one of the addresses that's mapped to a static IP address.

* Machine B is a MacBook Pro, running Snow Leopard (10.6). It typically runs at 192.168.0.6, which is NOT one of the addresses mapped to a static address, but "just" a NAT address.

Now, suppose Machine B hits the web browser run by Machine A: the log files should show the traffic arriving from the local address, 192.168.0.6. However, it instead shows up as coming from 66.xxx.yyy.zzz, the external NAT-affiliated address. This seems wrong, especially since all the other machines on my network show 192.168-type addresses when hitting the web server.

I now change Machine B's address to 192.168.0.5 -- one of the statically-mapped addresses. Browsing traffic is now arriving from 192.168.0.5, which is (I think) as it should be. I now change Machine B's address back to 192.168.0.6. The web traffic on Machine B is now reported to be arriving from 192.168.0.6 -- NOT 66.xxx.yyy.zzz. It's complicated by the fact that I don't know where to look for the problem. All the log files on all the machines seem relatively normal; there are least no glaring problems screaming out from them.

View 1 Replies View Related

General :: Setup Own Local Area Network Using Virtual Box Machines

May 23, 2011

I am new to networking and trying to setup my own local area network using virtual box machines. I have installed BIND 9.7.3 using yum in Fedora (dns server) and created all necessary .conf and zone fil es. I am successfully able to resolve domain names on this host machine (dns server). for example dig @dns.domain.lan client1.domain.lan correctly resolves domain name.

[Code]...

View 5 Replies View Related

OpenSUSE Network :: Can't Ssh Remote Hosts / Can't Ping Any Machines Outside Local Area Network?

Aug 29, 2010

I just installed open Suse 11.3, and I cannot SSH my school. Upon further investigation I could not even ping any machines outside my local area network. Ironically I could nmap machines outside my local area network.

View 4 Replies View Related

Networking :: Lost In Network / Setting Up Network On Laptop With Virtual Guest Machines

Feb 16, 2010

I've been trying to understand how Linux creates the network/interfaces on a machine (been reading the Linux admin guide), but as I'm pretty new to this subject, I've got lost in the forest.

To provide with my goal:
1.) Learn about network setups on Linux
2.) Be able to maintain my own (virtual) network
3.) Configure my (virtual) network

View 1 Replies View Related

OpenSUSE Network :: Permanently Enable X Connections From All Machines On Local Network?

Jan 13, 2010

Does anyone know how to permanently enable X connections from all machines on my local network. I keep having to enter 'xhost +' to allow X connections.

View 2 Replies View Related

General :: Connecting To Network - Other Host Cannot Ping - Eth0 Not Showing In Ifconfig Report - Ver1.qu1

Jan 13, 2010

i know this is crazy, but im using a [URL] and have loaded a copy of "red hat linux 7" on the computer. i have no idea what kind of hardware config/spec stuff i should have in my immediate vision, and if i did i'm not sure how i would make sense of it all. linux loaded fine. didnt save drivers. eth0 not showing in ifconfig report, but lo is connecting to network, other host cannot ping linux and vice versus

can mount a cdrom, but not a usb flash dont quite understand how the load methods work involving /mnt/cdrom/"usbutils-0.86tar.gz" eth0 problems and gnome rpm stupidity keeps me from upgrading sys from old version to a newer version, cant even find the cmd to show me that info, sorry. have usb files i want to mount, dont know how to loAD THE CDROM FOLES, SO EVEN THAT ISNT WORKING OUT HAVE DISCS WITH howtos just need to stay focused on steps to get desired end result, while trying to learn too much info for what im currently doing between all the f!@#@ing windows i have open.

View 2 Replies View Related

Debian :: How To Network Dos Machines

Sep 10, 2010

I'm wondering about the easiest way to network two computers over a Router. I go to Network on the Places Drawer and see the other machine, though it's empty and shows nada.

View 5 Replies View Related

Ubuntu :: Network 3 Or More Machines Together Not Using SAMBA?

Nov 1, 2010

i've been trying to network my machines together, 3 to be exact, without using SAMBA, as there is no point using SAMBA as there are no windows machines on the network at all, have tried using the standard network admin GUI's and following some guides, without success, what is the step by step procedure for creating network shares linux-linux only networking, regards

View 5 Replies View Related

OpenSUSE Network :: How To Setup With Firewalls On Two Machines

Jan 6, 2010

I have several Windoz machines in a peer-to-peer network and now two SUSE machines, one 11.1 and another 11.2.I have a network printer accessible now to all the machines.My next step is to be able to share files between all the machines and several network drives. I know how to set this up between the Windoz machines, but the only way I can get the SUSE machines to see the network (and be seen) is to shut down their firewalls, and I don't think that's how you are supposed to do it?Can someone point me to what it is that I need to read, or is there a FAQ somewhere to help get me started?

I think that this has something to do with Samba and I installed Samba (client or server? I forget) on the 11.1 and 11.2 seems to have it already built-in, but I don't know how to set it up with the firewalls on the two Linux machines so that it is all seamless (as if anything can be seamless).

View 2 Replies View Related

OpenSUSE Network :: Set Up 3 Virtual Machines On A Server

Dec 10, 2010

I only have one IP adress to access the server. But the server will host 3 web sites and I want them to be hosted in a vm. So, I want to setup 3 virtual machines to do it and use apache reverse proxy and vhosts to redirect the domain requested to the right vm. Now. I understand the concept, but I am not an expert to set that up....

I have an openSUSE 11.3 server. So, I have to set a virtual machine server, is that right? I have been told that I cannot do it with VMware server in oS 11.3. Can I use virtualbox for this? I only have to install virtual box? Is there a special version to install? Once the virtual machine server is install, is it trivial to create 3 vm? So, I want to know wich are the steps I have to take to set that up.

View 9 Replies View Related

Ubuntu :: Sharing Files Between Two Machines On Network?

Nov 4, 2010

I have a problem sharing files between two machines on my network, one, my main one running 10.10 and the other running Lubuntu. I've used the share files option on my main computer, and they show up on the Lubuntu machine, but when I try accessing the files, I get a message telling me that they'failed to mount'. It's frustrating in that I can see that the files are there, and obviously the Lubuntu machine can 'see' them too. I'm sure that I must have missed out something, and I've tried searching, but so far have only come accross some very old tutorials that just confuse me more. Surely there must be a fool proof way of getting this all working? (I've tried Giver, but the Lubuntu machine refuses to run Giver!)

View 3 Replies View Related

Ubuntu Servers :: WSUS For Win Machines On My Network?

Nov 6, 2010

I've got a few parts laying around and maybe a 100 bucks on NewEgg I can get a Windows Server going. However, I have a few questions. I already have two Ubuntu servers going. My main concern is OS updates. I have Ubuntu based distros covered via apt-cacher-ng on one of my Ubuntu servers. I also have a nice squid server going with adzapper and so on. However, I have a bunch of Windows based machines on my network, and I have very limited bandwidth. I know I can run a virtual server on my main server, but I prefer to have an actual box just for a WSUS server for personal reasons. This is only an option if there is no option for WSUS style updating through Linux on my current server.

If I have to build a low powered Windows Server box in order to just push Windows updates for XP, Vista, and 7 to save bandwidth in the long run will a copy of Windows Home Server do the trick? I read an article from MaximumPC that WHS 2.0 will have a WSUS feature, but is this feature available in WHS 1.0? This is a really crappy way of storing updates and save bandwidth, but I don't know what other options I have. I live and work in a very remote area and I've already done everything I can think of to help save bandwidth. Like having a transparent proxy server and apt-cacher-ng running. It's also helps run things a lot faster when updating Ubuntu based boxes and surfing the internet. If I could just get the Windows updates out of the way I would be golden. I'll wait for WHS 2.0 if I have to. I'm not buying a full blown copy of Windows Server just for updates, especially on a box that'll cost about 300 bucks when complete. Still better than a prebuilt WHS box advertised on NewEgg for 600 bucks.

View 7 Replies View Related

Ubuntu Networking :: Network Two Machines Over The Internet?

Feb 27, 2011

Me and my friend have been talking about networking our two machines over the internet. So he has done his side. Now i need to do my side... Any ideas on how i would go about configuring my computer to do this?

View 9 Replies View Related

Slackware :: Unable To Ping Other Machines On The Same Network?

Feb 19, 2010

I am using slackware 13.0 on my HP 520 machine. I got a problem with wireless connection.I use #iwconfig wlan0 essid Rendezvous key s:09876 mode Ad-Hoc. to connect to the Rendezvous network,but i am not able to ping other machines on the same network. Firewall have no prob. I am using iwl 3945 module.

View 9 Replies View Related

OpenSUSE Network :: Can't See Any Of Devices Showing Up In Network Manager

Feb 2, 2010

I can't see any of my devices showing up in network manager to configure even though they're using dhcp and working. How do I get them in so I can configure a proxy?

View 3 Replies View Related

General :: Screen Not Showing On Laptop But Showing On Projector When Connected

Apr 18, 2011

When I try to connect a projector to my laptop (already running) and hit the fn+f7 (the designated button for switching screen), nothing happens. I see "no source found" on projector screen and my laptop screen works perfectly. Now if I restart the laptop with the projector connected, I see all the intial booting messages on the projector screen (not on my laptop), then the gnome login screen appears on both the projector screen and laptop (when the login screen appears on laptop it looks like it has lower resolution than my usual laptop resolution). But immediately after I log in, my laptop screen goes blank, and projector screen becomes the only active screen.

If I restart without the projector, again all normal operation on laptop screen is restored.

I feel like I am missing some very silly options. Any help is appreciated.

Here is the output of xrandr when the laptop is connected:

Code:

View 3 Replies View Related

Fedora Networking :: Isolated Network For Virtual Machines?

Oct 10, 2010

give a reference to the definition of 'isolated network' as used in the Virtual Machine Manager? I have virtual machines that I do not want to have access to the host, I thought 'isolated network' did this but the VM's can ping the host. If (probably) I am wrong, how can I create an network that can not see anything else but what is also on the same network? The host and the isolated network are 192. and 172. The virtual bridge is not connected (or so it says) to any physical device.

View 2 Replies View Related

OpenSUSE Network :: Can't Figure Out Why It Is Working With Machines And Not With Windows?

Mar 27, 2010

I used to have my print server with cups in openSUSE 11.1 and it used to work perfect. I was able to print from both linux machines and windows. But since I Installed openSUSE 11.2, I'm only able to print from linux machines. In windows XP I'am able to find the printer and install the drivers, and everything seems to work, but when I send the print command, it creates an error. I have three XP pcs that were running perfectly, and now neither one of them print, so I know is a problem with the server itself. I have all the samba and cups services activated, and the firewall is set correctly, but can't figure out why it is working with linux machines and not with windows.

View 4 Replies View Related

OpenSUSE Network :: Disconnected Machine With Virtual Machines?

Aug 29, 2011

I have OpenSuse 11.3 with VirtualBox on it, and with installed Oracle DB (on host OS).. but, sometimes this computer is disconnected, without it's gateway (adsl router)... and in that case, I cannot ping from virtual OS to host OS, or another virtual OS. I tried to use 'Host only' option within VirtualBox, but it doesn't work. What should I do? It seems that virtual machines requires some kind of gateway/router, but since machine is disconnected, it's not working.. how could I fix it?

View 4 Replies View Related

Ubuntu Networking :: Can't Ping Machines On Local Network

Jun 23, 2010

So in an effort to increase the speed of my netbook, I removed Ubuntu and installed Lubuntu on it. When I tried to mount my samba share as I normally do, I noticed it wasn't able to connect - mount error(113): No route to host. Sensing something fishy, I attempted to ping the machine (both by name and by IP) - Destination Host Unreachable.The machine I'm trying to connect to is using Ubuntu 10.04 x64. I attempted to ping the other way and it was able to connect to the netbook just fine. When the netbook was using Ubuntu, it was connecting fine. My iptables check out ok, but here is the output of iptables -nvL:

Code:

Chain INPUT (policy ACCEPT 213 packets, 21635 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)

[code]....

Does lubuntu have some funky firewall built in to it that I can't find? (I've Googled for information on a Lubuntu default firewall and can't find any)

View 1 Replies View Related

Ubuntu Networking :: Sending Files By Network Between Two Machines

Feb 13, 2011

My two machines are both running Ubuntu 10.10. I want to transfer program files between them using a local area network.

My Ubuntu machines can both see the Window machines on the network, and get files from them. But my Ubuntu machines do not detect each other as being on the network. Nor can my Windows machines detect my Ubuntu machines.

From what I can tell, that's normal, and I've become resigned to using a pendrive to transfer files between the two machines. Or even sending files as email attachments.

there is a clean and easy way to transfer files between two Ubuntu machines on the same local area network.

View 9 Replies View Related

CentOS 5 :: Sending Messages Between Local Network Machines?

Jul 3, 2010

i am using centos 5.4 (5.5?) gnome on multiple machines in a local network.is there a program available that does the following:you type a message in a 'note'screen on one computer and can send it to one (to choose) or all machines in the local network that are online, so you can read the message on these other machines screens.

View 6 Replies View Related

Ubuntu Networking :: Home Network - Connect To The Windows Machines

Jan 14, 2010

I have a home network of 4 computers - 3 Windows & 1 Xubuntu I'm able to connect to the Xubuntu machine from all of the Windows computers, but I can't do the opposite - connect to the Windows machines from the Xubuntu. I'm using Gigolo, and I can see the network, but it says no servers found.

View 5 Replies View Related

Ubuntu :: Equivalent Of MS Domain Controller For Small Network Of 40 Machines?

Jun 23, 2010

I am looking for a way to deploy Linux in the same manner as a MS network. I want my desktop clients to authenticate against a DC, but Im not sure what would take the place of a Domain Controller in Linux. In addition, I am not sure if I could be able to manage user rights via a central server.

I have read about Samba as a domain controller, but Im not sure if that is what I want. In addition, I have read about LDAP, but again Im not sure if that is what I need to use. When I researched RADIUS servers, I was even more confused.

View 1 Replies View Related

CentOS 5 Networking :: Gathering Network Usage Of Xen / Virtual Machines?

Jun 23, 2009

I've run into a problem gathering usage for my xen virtual systems. With my old model I used to gather all network usage via my cisco devices using the the counters for each port. Each system had it's own port on the switch, and I tracked network usage accordingly. Now that I'm using xen for virtual systems, and multiple vm's share the same switch port, i'm not exactly sure what my best option is for tracking usage.

I thought I may be able to setup vlans on the switch, and bind each vm to a different vlan using vconfig... but it seems like there has to be a better solution than that.

View 1 Replies View Related

Ubuntu Networking :: Home Network - Setting Up File Sharing Between Two Machines

Nov 15, 2010

I'm having issues setting up file sharing between two Linux machines. I've tried the forum cookie cutter answer of "right click folder, sharing options, share, allow others to write and edit, allow guest accounts", but I simply cannot get my two Ubuntu 10.10 machines to see each others shared files. I HAVE been able to download and use the program "Personal File Sharing", and with it I CAN share the "Shared" folder between both machines. I'd prefer to learn the correct way to link these two boxes up though, and be able to share more than 1 directory. Am I missing any programs to complete this link? Do I need to use Samba? I've tinkered with it, and I can get both computers to see a workgroup name I set up, but cannot get them to view each other in it.

View 9 Replies View Related

Ubuntu :: Network Manager Not Showing

Aug 29, 2010

I got "network manager" installed, and it shows up in "starup applications;" however, it doesn't show in the taskbar. how can I put it there?

View 1 Replies View Related

Debian :: Network Manager App Showing No Connection

Nov 22, 2010

I was a ubuntu user for 3 years but all that 6 month release and reinstallations and bugs gave my nerves so I decided to turn to the real OS debian and hopefully stick to it. The only problem I have is that although wired internet connection is working the network manager app shows no connection and the wireless is also not working. I have an LG R500 laptop and never had the same issue with ubuntu before.

View 14 Replies View Related

Fedora :: Pc Not Showing In Windows > Entire Network?

Dec 6, 2009

As subject; none of my fedora machines appear in Windows' > Entire Network.I have installed SAMBA and started it; edited the config file:-

Code:
[global]
printing = cups

[code]....

View 3 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved