Ubuntu Servers :: Setup An OpenVPN Server In Bridged Mode?
Jan 17, 2011
I am trying to setup an OpenVPN server in bridged mode (Ubuntu 10.04 Lts). The goal is for the clients to be able to reach all the servers behind Openvpn server's lan. I have followed the official OpenVPN guide for Ubuntu 10.04.
My network setup is:
Private lan: 10.90.90.0-255 255.255.255.0
Gateway: 10.90.90.1
Openvpn server ip: 10.90.90.8
Gateway public ip: 79.xxxxxxxxx
I have forward port 1195 to the Vpn server through my gateway firewall.Besides that no other firewall is running.I can connect and ping the server both from windows and ubuntu clients. The difference is that from windows I can reach the private lan but not from ubuntu clients.
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Mar 10, 2011
I currently have one of our clients set up to use a routed VPN for their 5 laptops to connect to the server remotley. And this works brilliantly. They are about to bring on a remote office that will need a VPN connection back to the main office, so I was going to set up a bridged connection between the two sites (and possibly more sites in the future).
So my question is whats the best way to go about this? Can I have one instance of OpenVPN running with tun0 set up for a routed connection to the laptops and add a second tun (tun1) to the config that will be for the bridged connection between the sites? Or am I going to have to run multiple instances of OpenVNP, one for the routed and another for the bridged?
If routed and bridged have to run in seperate instances, will I have to add another instance for each new remote site that needs a connection? Can a bridged config connect to multiple sites, or have multiple tuns in the one config?
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Jan 23, 2011
I virtualised backtrack on windows 7, and set up the network connection to bridged mode, but my networking still fails.
dhclient eth0, outputs many DHCPDISCOVER but no DHCP offers.
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Aug 12, 2011
I need some advice on setting up VPN. The situation is as follows:
Server => Centos 5.5
Clients => Fedora, Ubuntu, Win XP, Win 7 (and possibly mac)
The flow could be as follows
Code:
Client=>10.x.x.x=========>10.x.x.1<=VPN Server=>192.168.x.1<=========192.168.x.x<=Server in LAN
A bit of explanation of the above. I would like to allow any client (be it any Linux version or Windows), to connect to the VPN server, obtain an IP Address and then function as if it is in the LAN and be able to access all the servers in the LAN. So the connection between an external client and the VPN server will be through the 10.x.x.x ip range and the server and the internal machines will be through the range 192.168.x.x. After going through the internet, I have decided to deploy OpenVPN client/server, with bridged tap interface in the server and the client.
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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, 2010
I'm using a Debian box as a gateway. I'm planning on bridging my DLink 604T modem/router so that traffic on the LAN goes to my gateway (which only has one NIC). The Debian box is running a PPPoe application which I'm hoping to log into the ISP through the DLink. I plan to configure the box as a squid transparent proxy. Most Howtos I've seen use NAT with 2 NICs, eth0 for the LAN and eth1 for the Internet. Any step-through to set up NAT for this?
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Sep 1, 2011
I'm currently trying to set up OpenVPN on my Ubuntu Server, however I'm having trouble setting up bridging. I am following the tutorial for bridging that is located on the Wiki here: [URL] At the current time my /etc/network/interfaces looks like this (default from Ubuntu install):
[Code]...
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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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Apr 12, 2010
I am trying to setup a VPN on my FC 12 box. Looks like getting openvpn to work behind NAT is as easy as just forwarding the ports. Do I need to forward any specific protocols (GRE, etc)? Also, can I do this with one Ethernet port (IE: RJ-45 jack), or do you recommend a second ethernet port? I could add in another PCI ethernet card if it makes it easier. Anyone know if a single ethernet jack will work or do I need two?
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Dec 7, 2010
I am trying to setup an OpenVPN server using CentOS 5. I ahve installed everything, configs are good, server starts fine. I have generated my certificates using the easy-rsa 2.0 included with OpenVPN. I have downloaded all the certificates to my machine and setup my client to connect. I am having that typical problem everyone seems to have where my client says certificate verify failed. However I can use openssl on the server to verify and it is ok. What am I doing wrong here?
Code:
[root@GSFOVPNxxx01 openvpn]# openssl verify -CAfile ca.crt gg-jbloomer.crt
gg-jbloomer.crt: OK
[root@GSFOVPNxxx01 openvpn]#
client output
Code:
2010-12-07 08:44:33 MANAGEMENT: CMD 'hold release'
[Code]...
I just dont get it, I have racked my brain and google until my eyes bleed and can not figure this one out.I am sure it is something simple that I am missing.
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Feb 22, 2010
We have installed "openVPN" from openSUSE 11.2 repo and "openVPN - webmin module" (GUI).What it needs to be done .. "Road Warriors" need to be able to access websites through openSUSE box sitting in the data center, from remote locations (hotel, coffe shops, wi-fi hot spots,..)We're half way there but it gets stucked somewhere with the IP's
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Aug 20, 2011
Newbie Question: How do I setup networking on openSuSE 11.4 on an HP Proliant DL385 G7 with 4 NICs to host Windows 2008 R2 on Xen? I've installed openSuSE 11.4 with all the patches (and most of the server patterns - Mail and News, LAMP, LDAP, Samba, etc.), and I've installed Windows 2008 R2 in a Xen virtual machine. I'm having problems configuring the 4 NICs eth0, eth1, eth2, eth3 are "bound" without an ip_address as br0
eth0 connects to my ISP - currently through a private LAN - It connects directly to the router with static IP 192.168.0.105 Eventually, one of the other NICs will serve ip_addresses via DHCP to a separate LAN (for use in an office setting), and eth0 will be set with a static IP from the ISP That means, eth0 will be static to the ISP, and the other NICs will attach to a switch serving private ip_addresses in the 192.168.0.xxx range.
Currently, I have br0 unconfigured and eth0 static. I have configured eth0 in the External Zone and br0 in the Internal Zone in the firewall, and all the correct ports are opened (afaik) I have enabled masquerading. Hostname, Domain (workgroup), DNS Server addresses and IPv4 Gateway are configured.
Windows 2008 R2 (Guest VM in Xen) "sees" the other machines on the network, and "browses" the internet, although it will not download patches except intermittently. I have not tried connecting to it from the LAN Eventually, I wish to run Windows Terminal Server. openSuSE cannot "browse" the internet, though it initially did. What am I missing? I "think" I need routing or NAT, or I may have my bridge setup incorrectly, although I've tried almost every combination. Google says Xen should be setup with either NAT or a Bridged Network.
Output of ifconfig:
br0 Link encap:Ethernet HWaddr 3C:4A:92:76:B8:F2
inet6 addr: fe80::3e4a:92ff:fe76:b8f2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:953 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:119849 (117.0 Kb) TX bytes:368 (368.0 b)
[Code].....
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Jun 2, 2010
i have setup Open VPN on Ubuntu 9.04, generated the key and have it running successfully on the server end. I download the open vpn client for windows, copied over the key ca and cert file and connected to the erver. All went well and the open vpn gui said its connected to the server (green comp icon in taskbar) and it said in a ballon it assigned me an ip of 10.8.0.6 it all looks good... BUT i have no vpn access... The virtual adapted in windows is not able to pull an actual IP/gateway and such...
[Code]...
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Feb 24, 2011
I have a few issues after setting up Openvpn. At work i just setup a new Ubuntu Server 10.4. The server itself is working Great. I ended up getting Openvpn installed and working to a point. I have searched online and done as much reading as i could find but i keep running into the problem of not understanding. So here is the problem.
The server is set on a static IP address. At first i tried to have the config file listen on a virtual ip address i setup up in /etc/network/interface but that ended up not working so i set it to its specific ip address. I kept running into the error about script security while trying to start Openvpn. I tried to add into the config file "script-security 2" that way the up.sh and down.sh scripts were allowed to be run. That didn't help and then i kept trying to run Openvpn manually running the command
Quote:
And i kept getting a message
Quote:
So what i did was just comment out the "up" and "down" scripts in the config file. This allowed me to actually get Openvpn started on the server. So once this was done i connected form a client machine and was given an ip address like i should. The only issue is that i was not able to actually comunicate with the server. I have a samba share on there to allow me to copy files back and forth but an not able to actually communicate with the server at all. I should note that this is a web server that i can view from the outside. (actually get to the webpage) but i tried to access the website and share via the Openvpn gateway. I also tried to access the website portion using the hostname with no luck.
By the way, prior to putting the server on its separate network i was able to access the webpage and the samba share using both the ip address and the hostname.
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Mar 21, 2011
I recently loaded up my old powermac g3 with debian 6.0 PPC, and it seems to be running quite good. I control it using ssh from my windows 7 box. I installed default-jre, so I could run the minecraft server on there.
I've got two questions: I installed Openvpn, but I'm a bit confused on how to use it.. I want people to be able to connect to my vpn network over the internet, what configuration should I use, and could someone maybe link me a decent step by step tutorial?
secondly, when I tried to launch the server, it tried to generate a new map, but this is taking ages! on my desktop computer, it only took two seconds, but after over half an hour, it only got to 20% of "preparing spawn area" what could be wrong with this? Any reason why the java virtual machine would have performance issues? I have no clue.. I haven't tried copying over my smp map from my windows box yet, and launching that.. but I doubt performance will be any better. (my windows 7 machine is hosting at the moment for about 10 people)
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Feb 13, 2010
I want to configure a VPN over the Internet.I installed the 'openvpn' package, generated the key file, transfered it by a secure way to the client, and setted up the configuration file.
So, in that configuration file I input the IP addresses of the tunneled interfaces. Both IPs are static in the tunnel.
Then, I've heard somewhere that I can assign a dynamic configuration IP for the client. I do this registering a range.
Well, when I tried to change static IP to dynamic IP (changing '192.168.0.2' to '192.168.0.0/24') in the configuration file, the OpenVPN didn't work.
Obviously I don't know what I'm doing, and I really, don't believe that simply changing the IP will make it work, but I tried.
I hope I explained my problem as well.
My configuration file:
# OpenVPN Server Configuration File
dev tun 0
ifconfig 192.168.0.1 192.168.0.2
cd /etc/openvpn
secret key_file
In client I execute the 'openvpn' without the '--daemon' parameter.Then I want that my client uses a IP in a range (192.168.0.0/24, for example), instead of a static IP (192.168.0.2).I also thought to use a DHCP server, but I'm not sure that will work.
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Apr 14, 2011
I posted this in the Networking section, but should probably be over here. Couldn't move it. I have a transparent proxy in place. I have Webmin installed on the server. Is there an app that can monitor bandwidth in real time? Also run reports? I have SARG installed, but seems to only monitor HTTP traffic, I need to monitor all traffic. I have a bridged connection, but monitoring the outside interface is fine too.
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Mar 3, 2010
setup linux in bridg mode for my windows server ?
my both linux and windows has 2 network cards each.
basicaly it is vLan cards, each server has 2 network cards. one to main switch and one to local IP.
data will be going like below:
internet ----------------> eth0 --> linux --> eth1 ----------------> Windows.
i have vLans on both servers. And i need cross connection setup. And use linux in bridg mode / cross connection .
actualy i want to use Iptable rules to filter bad packets and forward good packets to windows. i have scripts how to forward packets to windows. but the problem is i dont know how to setup both servers in this topology. and how to make linux as bridge.
All it should be in transparent mode. Not in NAT mode.
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Feb 1, 2011
I have been trying to set up bridged networking, but I keep failing. I am using Fedora 14 x86_64 KDE as host with qemu-kvm and SPICE. The plan is to install a windows server, a few windows clients and then rawhide as guests on that. Naturally I want to use bridged networking for the windows guests.[URL]..But those both leave the guest without internet access. Is it really this difficult, or am I doing it wrong(tm)?
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Jul 19, 2009
Just something that struck me while working on our virtual servers today.
I have bonded 3 NICs at the host in Ubuntu Server 8.04 LTS. They are using mode 0 for Round-robin. Point is to increase the speed/performance of all the servers, but mainly the fileserver. The fileserver is a virtual server running Ubuntu Server 8.04 LTS on VMware Server 2.0.
1) I noticed the NIC in the slave OS reported link speed as 1000 and Im unable to change it as the NIC (virtual one) doesnt support it. Does this not really matter, as the NIC doesnt exist, and it will run at higher speeds anyway? Or do I have to remove the bond on the host, bridge all 3 interfaces from the host to the slave OS, and then make a bond in the slave OS?
2) While at it, does mode 0 only increase performance on data being sent from the host or does it also increase the available incoming bandwidth?
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Feb 5, 2011
I've recently setup a custom home server running openSUSE 11.3 64-bit in terminal mode. I've since successfully setup and configured it to act as an iSCSI target using the iscsitarget package and the corresponding kernel module, along with the YaST module for the configuration. Prior to setting up my hard drive accordingly, however, I noticed that when I ran 'zypper up' in a terminal I got the following:
Code:
pph-server:~ # zypper up
Loading repository data...
Reading installed packages...
[Code]....
At the time I accepted, and found later that it removed the setup I had, meaning I had to start over. However when I ran YaST in a terminal it then wanted to re-install the iscsitarget package, which subsequently removed the tgt package, and so this continued for a bit. (Thankfully no actual data was stored on the target at this stage .) For the time being I've locked the iscsitarget package and the kernel module to prevent zypper from wanting to remove it and install tgt instead since I now have my target working as I want.
The question I have is why zypper was trying to remove iscsitarget and install tgt, and yet the corresponding YaST module was wanting to do the opposite. Is tgt considered a better option by the openSUSE developers, in some way, for setting up an iSCSI target? Is iscsitarget development/availability being ceased by them in favour of tgt? Is there something else I'm missing? Neither of these packages seems old to me: the latest version of iscsitarget was released on SourceForge last July, while tgt was only updated this month.
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Feb 24, 2011
I'm trying to setup and configure a server entirely with text only run mode 3 on a virtual machine so I can redo my current live server. I'm now trying to set up the firewall of the system using iptables. I've read up on it and came up with the following:
-clear all rules
#iptables -F
-set default policy rules
#iptables --policy INPUT DROP
#iptables --policy FORWARD DROP
[Code]....
Everything above worked for me but just out of interest I looked at my live server which was configured using a GUI. I ran iptables-save and it was pretty much the same but its port open lines read like this:
#iptables -A INPUT -p tcp -m state --state NEW --dport 80 -j ACCEPT
so finally my question is do I really need the "-m state --state NEW"? Wouldn't having that drop established connections on those ports? I'm just confused as to what exactly the NEW state is doing and would it make a difference if I didn't include it.
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Nov 7, 2010
I have OpenVPN running on my Ubuntu Server just fine. I can connect over the Internet and access all my resources on the LAN via bridged mode perfectly. My server only has one LAN card and sits behind my router, which means it has a private IP address of 10.1.1.2....Which brings me to my question. I want to open up access to my friends via OpenVPN, but I don't want them to be able to access other machines on my LAN (e.g. 10.1.1.20). However, I do want them to be able to talk to each other and pass broadcasts (old LAN games), as well as my laptop (let's say 10.1.1.7).I've tried using iptables to block traffic to the LAN (such as .20), to no avail. I've been reading up and it seems as though iptables won't even filter the traffic, as it's passed at a lower layer. Is this true? If so, what do you recommend I do in order to prevent my buddies from accessing the rest of my LAN while siumultaneously allowing broadcasts pass for some very old Windows LAN games (we're talking Windows 9.
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Dec 10, 2010
Can anyone recommend a good tutorial in how to use/setup a VPN using openVPN? I've registered with strongvpn.com but am a complete newb to setting up VPN on Ubuntu.
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May 12, 2011
I'm trying to setup openVPN on debian, well this worked. But every client will get the same ip (172.17.0.6 - local it is). how to set my server in bridge mode. I've read about: server-bridge LOCALIP 255.255.0.0 172.17.1.20 172.17.1.100
BUT, my server has no ipv4 address, but only ipv6: 2001:41d0:2:b2d6::542a:74a so I am not sure how I can do this.
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Jun 10, 2010
my HP Pavilion a335w on board NIC stopped working. I've tried putting in another NIC in the PCI slots #1 & 2 of the three available and the system does not pickup the card. I thought it was because it was an old 3com 3c905b and was not supported.I took the box to Best Buy and purchased a new Linksys card and had them install it.The Geek Squad told me that the Motherboard was bad, no charge.I took it to a refurbishing store and the very patient gentlemen tried to get a Netgear FA310TX card to be recognized with no luck.I took the Netgear FA310TX card home and put in slot #3 and booted up with the install disk. In Rescue Mode it recognizes the NIC and gets an IP address from the router.If I boot up normally without the install disk, then it does not recognize the NIC.
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Nov 24, 2010
After installation Ubuntu Server 10.10 I don't know what to do next to access to the Internet.
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Dec 25, 2010
I installed it on very old machine P3 1200Mhz and it works ok but I have problem with text mode because I have 75x132 aprocs. text on screen and I don't see what I type or system replay. Is there simple way to change to 25x80 or something with greater letters. I don't have GDI.Someone sad to me to do:sudo dpkg-reconfigure console-setupand it's does the job but when I restart system it's gone.
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Mar 31, 2010
I'm trying to setup OpenVPN to use a third party CA, and its unclear to me how to use the serial and index.txt files that are created when one uses the easy-rsa scripts to setup OpenVPN. If i'm using my own CA can I ignore those? Its also unclear to me how OpenVPN figures out the server.key passphrase. I'd also like to leverage the --tls-verify cmd directive but I am unsure of where to specify it.
What I would like to do is have --tls-verify call a perl script that then verifies that the CN of the certificate the client is passing in matches a cn in an LDAP group. I figure I can do the LDAP group lookup with some easy perl stuff, its unclear to me though if --tls-verify is going to pass in the RDN of the client cert.
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Jan 31, 2010
I need to know the procedure to setup VPN between two network. i setup openvpn access server to do this easy. 1. Step by step procedure to setup VPN 2. Setup VPN with DHCP 3. How to check that open vpn is running successfully.
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