CentOS 5 Networking :: Setup A Network To Network VPN Tunnel Between Our Main Office And A Temporary Location?
Aug 12, 2009
I am attempting to setup a network to network VPN tunnel between our main office and a temporary location. This location need full VPN access back to the main office's network.Anyhow we have spent about 3 solid days attempting to make this work without any great success. Here is our network scheme for these two devices.
Network A (Main Office) (OpenBSD using isakmpd)
Network: 172.16.8.0/24
External IP: 1.1.1.1 (obviously not the real IP)[code].....
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Sep 16, 2010
I am wanting to setup an office network consisting of three computers and one server. We already have the equipment ready with Vista Business pre-installed on the computers. I want to be able to create a network which allows users to use any machine as this will reduce downtime should a machine break. Also I would like user's files to be held centrally on the server which makes backups easier.
The most important element here is data backup. As like most businesses we are moving away from paper and using the computers to store important records such as customer information. If this data were to be lost, the business would come to a complete halt.
I have been looking at the idea of installing a Microsoft Small Business Server as it would be nice to have centralised control of the machines. However the cost would be over 800 which can not be justified for three machines and five users. Therefore I am turning to Linux for a alternative solution. I have previously used CentOS and Ubuntu for home use but never really gained much knowledge or experience of either.
It is my understanding that Samba can act as a Primary Domain Controller, which if I'm not mistaken is where it handles the network logins and profiles. Is this correct? I have come across many samba tutorials online but whats confusing is they are all different. Some of the tutorials involve using Kerberos and OpenLDAP. Do I need to learn about either of these? What do they do and what benefit will they bring?
Finally, I see Samba 4 is in development and is likely to bring a lot of new features which aren't available in Samba 3. Is this worth waiting for because I don't want to be upgrading everything again 6 months down the road?
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Jul 20, 2009
which file can setup up my network interfaces? i was able to setup the nameserver using /etc/resolv.conf but I cannot find anywhere to configure the ip and and gateway. I could't find /etc/network/interfaces as you do on Debian
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Apr 7, 2009
Using Fedora 10, can anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
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May 25, 2010
Cannot activate network device eth0!"device eth0 does not seem to be present, delaying initialization".i cannot find my network card while i set up network configuration Now I use dual boot window 7 and fedora 9,I cannot find my network card in select network adapter while network configuration ,i have a network card Atheros AR8132 PCI-E fast Ethernet controller NDIS(620)and for wired in Accer laptop .
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Apr 7, 2009
Can anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
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Aug 22, 2010
I've currently got a Xen box with 3 Virtual machines on it, in a routed setup. I'd like to put them all on a private internal network as well, which I'm assuming I'd do with a dummy network card and a xen bridge, but I can't find any information about setting up the xen Bridging setup on top of the existing network-route instlal.
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Oct 5, 2010
I have a server that is on both a standard network and a virtual network, as follows: server1 attached to standard network server1 acting as Dom0 with two linux DomU guests (under Xen) I only have one network card. How do I configure server1 to have a different hostname on the standard network than on the virtual network? Here are the relevant network configuration files for server1:
/etc/sysconfig/network-scripts/ifcfg-eth0:1
DEVICE=eth0:1
BOOTPROTO=none
NETMASK=255.255.255.0
IPADDR=192.168.122.9
[Code]...
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Nov 30, 2010
I live in Japan and am trying to print to a network printer (Richo Ipsio C411 PS). Couldn't find the ppd in the foomatic database. At my previous school, I had no problems printing to the printers on the network once I found the ppd. A few months ago, I transfered to a new site. Unfortunately, when I send a print job on the network here, the printer just gives a Japanese message that says "command error." I've tried other printers on the network (all different models of the Ipsio).
I went to the Japanese Ricoh website and it recommended a generic printer ppd. I downloaded that, but it didn't work. Then I got the ppd off of the windows driver CD and tried that. Again, no success. I have no idea what I'm doing (obvious, but should be noted) or how to get this started. I also tried 2 versions of Ubuntu -- I'm running 8.04 and 10.04.
Attached are copies of the ppd files if it helps.
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Sep 27, 2010
I added this line to the fstab file:
Code:
//SERVER/dfs/users/USER /media/USER cifs uid=1000,gid=1000,username=USER,password=PASSWORD 0 0
and when I try to run
[Code].....
The line worked fine on Ubuntu 10.04 but is causing this error on 10.10
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Apr 26, 2011
I'm working with a program that uses Open Motif to create all of the widgets, including the Open File dialog box (obviously). However, Open Motif being kinda old-timey, 80's vintage, and for the most part now an abandoned project, it is quite clunky. So, actually what I need to do is to open some files located on my work server. I have already successfully connected to the relevant server directories with Samba, and with programs built with GTK+ (such as GIMP) I can open files across the network because I have created a bookmark in Nautilus, and those bookmarks appear in the Open File dialog box created by GTK+. Now, Open Motif is different: it doesn't see network locations, orNautilus shortcuts. When I type "smb://serveripyadayada" in the search folder, it really doesn't like it and complains. So, what do I do? Can I get somehow Open Motif to open a network location? Or can I do a run-around and place a shortcut in the file system that points to the network location?
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Sep 17, 2010
What I want is a location, say at home where I might use the wired connection on my laptop or the wireless. Likewise at work, I am usually on a wired connection but sometimes need a wireless connection. Can/does Network Manager let me configure a location with preferred adapter, etc and automatically switch or do I need to install something like Wicd? I don't see anything in Network Manager to do this.
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Feb 4, 2010
Im trying to setup multiple domU through the default bridge setup. I am able to access only one of them through the network at a time. If you ping one of the domU it works perfectly but you cannot ping any of the others until you stop pinging the one and even then it takes a bit before you can. Ive looked around for a while and seen similar problems but nothing ever seems quite the same. Im probably missing something really stupid. Or is this the way the bridge is supposed to behave? Do i need to use a routed virtual network?
[Code]....
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Sep 28, 2010
In gnome-network-properties I've set up two proxy locations: default and remote.
It's a bit of a fag having to change between them via the gui depending on where I am. Can the proxy be changed by command line because then I can set up a script to use the right proxy automatically? - e.g. use remote proxy if my mobile is connected via usb.
Had a google but don't think gnome-network-properties has command line options so I might be approaching this from the wrong tack.
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Dec 28, 2010
I have just rewired my LAN using Cat 6 cables. Download- and Upload speeds to my main machine are great :However, it seems my LAN speed is very slow. when I copy large files from my main desktop pc to my mediaplayer, I only reach a speed of 3,7 MB/s in Ubuntu 10.10 using SMB protocol to connect to mediaplayer. I use a Sitecom WL351 Router that works fine as far as I can see. Using my dualboot Windows 7 I can copy the same large files using same setup (same pc to same mediaplayer) I can copy with almost 10 MB/s. I appreciate a little protocol overhead in Ubuntu, but this seems to be a little too much
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Jan 31, 2009
I am trying to setup a network bridged Server on Centos 5 like belows,
Broadband Router (NAT mode) ---> Bridged server (with t Proxy)--> Client PC .
after installing and configuring bridge, client can browse. But, i want to make this server working as a transparent proxy.But, my bridged proxy is not working. i need to use iptables command to make it properly.
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May 19, 2011
I'm trying to setup a server to distribute CentOS 5.6 over a the network with PXE. I found and followed [URL] but that guide is certainly incomplete. I have DHCP working and other machines will try and boot but get a TFTP timeout. I don't plan on using Kickstart at this time. What do I need to do next? What am I missing?
[Code]....
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Apr 18, 2011
I have 2 linux servers in different locations. I need to setup a ip tunnel. I follow this steps on both servers:
Server1: ip tunnel add tun0 mode ipip local IP_Server1 remote IP_Server2 dev ethX ip l s tun0 up ip a a 10.10.10.1 peer 10.10.10.2 dev tun0
Server2: ip tunnel add tun0 mode ipip local IP_Server2 remote IP_Server1 dev ethX ip l s tun0 up ip a a 10.10.10.2 peer 10.10.10.1 dev tun0
After creating the tunnel everything is ok, but after a time(maybe some hours), I can't ping the other end of the tunnel (ping to IP_Server1 and IP_Server2 is ok all the time; the connection to internet is very reliable). I have tried "ipip" and "gre" mode, but same result. If I ping from two servers the other end of the tunnel, the connection is again established for some hours and ping is working in both directions.(if I ping only from one side the ping is not working) How can I resolve this issue for no longer having to log on both servers to ping the other end of the tunnel? If I use an crondjob to ping the other end of the tunnel at 2 hours everything is working fine for weeks, but I need other solution.
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Jun 1, 2009
I am trying for the last many days to setup my opensuse 10.3 as Samba PDC Server according to the URL mentioned below, but in vain:How to setup SUSE 10.3 as Samba PDC - openSUSE When ever I try to join a Windows XP machine to the domain setup on Opensuse, I get the error:'The following error occured while attempting to join the domain. The network path was not found'. What could be the reason for this error despite of the fact the I am able to ping the FQDN of the PDC from the XP machine, but the XP machine simply denies to join the domain because of the above mentioned error.
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May 12, 2011
I have an opensuse 11.3 install which I want to set up as a network boot server to install Solaris 10 on a Sun Ultra 10 client. According to what I've read, this requires rarpd and tftpd which I've set up on opensuse, but also bootparamd which I can't find for 11.3. It seems it was last included with opensuse 9.2. Does anyone know if it's available, if I could use the suse 9.2 version, or any alternative?
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Jul 23, 2011
So im trying to get an icmp tunnel setup using ptunnel. When I run it under the same network and use to connect to RDP, it works fine, however when go outside my network and connect in, it does not get anywhere. I can confirm that I have forwarded ICMP packets to the server (if I ping the external ip it will show the status of the server if I unplug it) and that the server is showing signs of registering it.
On the client it just tries to resend the packet "Resending packet with seq-no 0" Over and over Firewall is off for testing so thats not the issue.
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Jan 26, 2010
while trying to set up Xen Virtual Nodes we encountered one issue with the network (which is why it is posted here On the DomU the interface is provided by a bonding -bond0- of three NICS. Now the Xen network script a) does not take this bonding b) destroyes even this bonding From a number of posts I assume I have to configure this by hand, correct? Is there an instruction how to do this? Simply create a bridge on top of bond0??
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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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Jan 12, 2010
I'd like to have a set up where my Ethernet card has a static IP set up but my WiFi card doesn't.Currently I have a profile for this set up in Network Manager, however on boot up and every time I replug the cable Network Manager chooses the default "auto eth1" profile. I manually have tochoose my own profile for the Ethernet card every time. How can I make it default??I know the workaround would be to use ifup but then I lose the ability to quickly change access points for my WiFi card so that's not a solution for me
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Jul 4, 2010
I've just installed openSUSE 11.2, one problem is suse didn't find an internet connection when suse performed the ..."automatic system configuration. This routine attempts to configure your network and Internet access and sets up your hardware"... Where can I manually configure the network. I'm in the network folder now no luck. I've been using every documentation I could find Novell Documentation and DVD installation/11.2 - openSUSE Network Status: Unknown network status
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Dec 16, 2010
I successfully added/shared a network printer in SUSE 11.3 32 bit, but when I try on the 64 Bit box it didn't work out very well.What ports need to be open ? Is it necessary to open port 631 in YAST->Firewall->Advance- >UDP and IPP ?(TCP 631 already open) What services need to be running? Here is the error log :
[16/Dec/2010:19:25:43 -0500] [cups-polld xxx.xxx.xxx.xxx:631] CUPS-Get-Printers failed: Forbidden
XXX is my server IP
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Aug 18, 2010
I'm trying to set up a network in the manner shown in the attached schematic. My problem is the ones hightlighted in purple, everything else is working fine. Could someone give me a quick tips on how this can be done (if at all possible)?The computer the router is connected to will be running linux (ofcourse).
What mode should i set the router to? I've listed the available modes below.Is there any way i can prevent the game consoles (or computers) from being able to contact anything but internet past the router or bridge computer? i.e the bridge computer becomes the only visible gateway?I'd prefer them to have their own ip range behind the bridge computer/router and use the DHCP function in the router, or perhaps setup DHCP on the bridge computer.I would like to be able to view the traffic going trough the bridge computer.What gateway and dns ip setup should i use on the router and the consoles/computers connected to the router?
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May 6, 2011
I've got problem with configuration of 6to4 tunnel. I do it like they do here using iproute2 HTML Code: [URL] And still I can't ping ipv6.google.com: I' ve got Destination unreachable: Address unreachable
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Apr 11, 2011
At my workplace, Ubuntu connects to the wireless internet with no problem at all. When I log into openSUSE or PClinuxOS (the other two distros I use) I can't connect. Is there a way to copy the network files from Ubuntu to at least, not replace, but use as a reference for trying to trouble shoot my other two distro networking issues?
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Dec 19, 2008
I work for an organization on which is growing up with pcs, I set up a linux but with a class c net (192.168.1.0/24) and dhcp for 250 clients, so my question is, how to change from class c to class b since now the org have now 300 pcs that need to be connected each other with printers and everything.
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