Networking :: Access Multiple Servers From Outside?
Oct 21, 2010
I have an application running inside our lan on server 192.168.0.1:8080. I have configured gateway firewall to direct all traffic on port 80 to port 8080 on 192.168.0.1. So I can access the application from outside lan. Now the problem starts when the application redirects the traffic to another server 192.168.0.2 according to the input of the users. How can I configure the whole system so that I can access the application running on second servers also?
View 3 Replies
ADVERTISEMENT
Dec 27, 2010
what is the best way here? I have like 5 servers, and I want my clients to access each of them, so in case 1 server is down, they can access remaining servers. Also, it will work like user1 chooses the server number and is connecting to a central database, then reply is OK, and he can connect to the server number he wished.
View 1 Replies
View Related
Mar 18, 2010
Ever need to provide access to multiple PC's and did not have a router only a hub. Maybe this isn't original thinking, but then again maybe you didn't think of doing it this way (which i am sure there are many ways to do it) So I have 2 Ubuntu Servers, 1 Windows Box and a Hub - All 3 with internet access off of single ip and single Ethernet port.
While searching for a backup method today I came across Clonezilla. I was wondering if this was the right thing for me and since I needed to backup my roommates PC for a reformat and install of Windows I decided I would give it a try, but only if it would work. I didn't want the hassle of going into the main part of the house and finding out what cord was what as there is a cable modem connected into a switch (4 static IP's with internet) and one port of the switch hooked to a router) Anyways, didn't work he was on the router I was on the switch)
But this got me thinking. When I setup my server to do this, during one of the setup scripts it said it was setting up Internet access for client machines and that it was assigning them IP addresses threw a DHCP server that it had installed.
So, I dug up the hub connected the internet cable to hub up link and Server 1 on port 1 Server 2 on port 2 and Windows on port 3 The main server gets the internet provided IP address and routes it to the hub via a virtual interface. Server 2 is configured for DHCP and the windows box, It was set to get info automatically but it didn't fill the DNS info so I had to manually do that (just a heads up) I decided to use OpenDNS Servers (208.67.222.222 & 208.67.220.220) but im sure putting in the gateway IP address would have worked too.
So, by now if you need this I am sure you are excited and want to get to it. Like i said there are probably other ways of doing it, ways that don't involve you installing clonezilla and DRBL, maybe even just DRBL is needed, maybe one of them installed whats needed as a dependency- all I know is it works, if you know - elaborate so people know, but hey- this way not only do you have internet access on all PC's you can deploy custom images to them as well.
View 1 Replies
View Related
Jul 24, 2011
I find FTP server software confusing in Linux. Using ServU for Windows for an example, all I need to do is to create users via the ServU interface and choose a folder I want that user to have access to and their permissions, and viola, they can connect to that directory, and that directory only.
But in the the land of Linux, it apparently can't be managed this easy. I have a web server with multiple domains, and therefore multiple users need access to their own web root. So with that in mind, what FTP server software should I use (there are plenty out there) and how would I go about to create a user per domain, so that they can log in using FTP to manage their site, and only have access to their own web root, and nothing else?
View 2 Replies
View Related
Jul 14, 2009
I have a wide area network with 7 CentOS servers running Bind and 1 Windows 2003 server. All 8 of these servers handle DHCP and DNS at their respective locations. At each site I can ping computer.site.company I'd like to be able to resolve the dns names from site to site. So from site1 I would like to be able to ping computer.site2.company and get a response.
View 4 Replies
View Related
Jul 28, 2010
In my environment we are running DHCP on a Windows 2003 r2 server. This DHCP server also is used with Symantec's 3COM PXE for the desktops. So the desktop's can PXE boot into Symantec Ghost and re-image the PC's with a Ghost (GHO) file. This DHCP server is responsible for assigning IP addresses for all desktops on the network.
We also have several branch offices which this DHCP server provides IP addresses to. These branch offices are on a separate network so I believe this is possible. Each branch office is running a Linux server so I would like to use Clonezilla and allow users in these offices to PXE boot to the local Linux server to run Clonezilla and re-image their notebook/desktops with a specified image that is on the local Linux server in each office. My only concern is the use of the same DHCP server. Is this possible?
Another project I am working on is setting up LTSP with openSUSE in which I want to have about 10 or 15 diskless PCs boot up and retrieve the LTSP image but this would also use the same DHCP server and is on the same network as the regular desktops that use the Symantec 3COM PXE service so is this even possible? If not, any recommendation on how I could get it to work? Could proxyDHCP work or MAC filtering or even a seperate VLAN?
View 2 Replies
View Related
Feb 16, 2009
i am working at a place that has 2 physical web servers yadayada1 and yadayada2 but only one public ip address i can use dyndns to register 2 dynamic domains on the same ip address
how can i get yadayadayada1.dyndns.org to route to yadayada1 and yadayadayada2.dyndns.org to route to yadayada2 ?
View 14 Replies
View Related
Oct 9, 2010
I am looking for solution that would allow multiple users distributed over several offices in several countries to access one corporate file depository. The features I am looking for, are as follows:
- There should be the way to establish user groups and then define for each folder access level (read/write) for every user/group. Every users is given his login and password.
- This file depository should be accessed from both Linux and Windows clients
- There should be a way how to sync certain folders/files on one's PC so that it is possible to work off-line and then sync back to the common depository.
Then I plan to launch some regular backup routine on that folder where all the files of depository are kept. I can imagine that the solution could be involving several tools, ie access for Windows users might involve setting up samba server, but I don't know how to establish all the limited access stuff for Win clients via samba.
View 1 Replies
View Related
Jun 22, 2010
I found one strange issue with ubuntu, can anyone suggest if its a bug or as designed? If I have two nameservers in my resolv.conf, ubuntu only checks the first (and receives a not found reply from there) and never goes to the next two nameservers. This behaviour is very different from windows or other linux systems.
View 3 Replies
View Related
Jan 14, 2011
I have 5 linux ssh servers at my office that are behind a router. How do I connect to any one specific server from outside the LAN? Do I have to port forward the router giving each machine it's own port? That seems clunky.
View 2 Replies
View Related
Jul 26, 2011
I am looking at using reverse SSH tunnels to manage servers on client sites. I have played around with reverse tunnelling, and have it working on one server back to my middle man server from which I can SSH across from my own PC. All working fine. When I scale this up to 100+ servers reverse tunnelling in, usernames & passwords become a pain, so I'd prefer to use RSA keys instead. My question, finally you might say, is this, to successfully ssh from my PC to the remote server, do the RSA keys need to be on the middle man server as well, or is it just my PC and the remote server?
View 1 Replies
View Related
Mar 18, 2010
I have an ubuntu server set up in which i would like my shared media directory to be accessable with multiple usernames / passwords because I use my admisistrator username and password for samba as well, but I do not want to give out that password to all clients in my house. And, I would like to have write permissions but keep other users to read only. Is this possible or do i need to just make one separate username / password for samba sharing?
View 1 Replies
View Related
Oct 15, 2010
I can connect to my school's wireless network using the standard network manager, but often (not always) it repeatedly disconnects and reconnects every few minutes. Occasionally it also prompts me for the security information again (even after it previously connected successfully).
By running iwconfig when it's on the fritz, I can see that it's often switching access points for the network - which is what I think is causing the problem. It disconnects and reconnects even when the signal strength for the current AP is fine, and it will often switch to an AP with a weaker signal strength.
$sudo lshw -C network
Code:
description: Wireless interface
product: Realtek Semiconductor Co., Ltd.
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:05:00.0
logical name: wlan0
[Code]...
View 4 Replies
View Related
Apr 15, 2009
So I have a pretty big networking nightmare on my hands right now. Stepped into the dog crap with this one, told my employer that I knew how to setup vmware servers right? Its not hard, install CentOS, install vmware, run the config tool, bridge the network, down the road we all go right? We have 3 servers running about 10 virtual servers.
Here is what we have all together.
CFU <- This is the internet. We have IP ranges xx.18.230 - xx.18.241 Gateway is xx.18.254 and subnet is xx.255.128
DELL PowerConnect 3348 Switch <- This is what everything is pretty much jammed into.
VMH1 <- This machine has 2 NICs
eth0 connects to the DELL switch somewhere on the upper 30+ ports
eth1 connects to the DELL switch on port 1.
It uses firestarter and is the gateway for our internal internet on 192.168.11.XX using IP 11.254. It has 4 vm's on it. One of them is the domain controller, hooked to eth1 using IP xx.11.1. The other one is a server for managing remote backups, it has an external IP linked to eth0 of xx.18.234. The other 2 vm's are for misc remote login stations that use internal ip addresses linked to eth1. It hasn't had a single problem communicating on either one of the ports..
VMH2 <- This server hosts a web server, and some other misc stations.
It hosts a web server on xx.18.230 and xx.18.231
It also hosts 2 workstations on a seperate network, through another router that is wireless....
Now, we have the problem child, VMH3
VMH3 <- This hosts...nothing. It sits and has a ton of storage, but does absolutely nothing, but won't communicate out either one of its network ports.
The xx.36.xx and xx.22.xx networks are there because we have multiple businesses in the building that shouldn't see each other.
View 3 Replies
View Related
Mar 31, 2011
I have a CentOS5 server with dual ethernet adapters + Webmin installed as my Router / Firewall / DHCP server working successfully with 1 static IP from my ISP. I also have 7 additional static IP addresses from my ISP needing to configure to individual servers inside my network. I have configured the additional virtual interfaces, but am lost on how to route data specifically from additional ISP address to specific internal network address.
Below is my desired configuration.
98.173.159.xx1 = eth0 physical interface ==> eth1 192.168.1.1
98.173.159.xx2 = eth0:1 virtual interface ==> 192.168.1.10 ==> CentOS Server 2
98.173.159.xx3 = eth0:2 virtual interface ==> 192.168.1.20 ==> CentOS Server 3
98.173.159.xx4 = eth0:3 virtual interface ==> 192.168.1.30 ==> CentOS Server 4
98.173.159.xx5 = eth0:4 virtual interface ==> 192.168.1.40 ==> Mac OS X Server 1
98.173.159.xx6 = eth0:5 virtual interface ==> 192.168.1.50 ==> Mac OS X Server 1
98.173.159.xx7 = eth0:6 virtual interface ==> 192.168.1.60 ==> Network Attached Storage Server 1
98.173.159.xx8 = eth0:7 virtual interface ==> 192.168.1.70 ==> Windows 2008 Server 1
View 2 Replies
View Related
Jan 17, 2011
Looking for a test tool where I can fire up any number of ports (TCP and / or UDP) to listen on.
I am currently getting my using nc but its only 1 port at a time (i know I can open up multiple sessions but thats cumbersome), it can't do UDP, and it closes at the end of the session.
A friend has suggested socat but it looks pretty much the same except it can do UDP, but also cumbersome, I have to manually output to a different file per port, etc.
Basically its so I can quickly test firewall and NAT rules.
View 7 Replies
View Related
Aug 27, 2009
Faced with disk-bound issues on a FTP server with high traffic. Would like to set up multiple FTP server nodes with dedicated storage for each node where all FTP access is managed by a master FTP server. So, a user would FTP to a single externally visible IP address for the master FTP server and then get routed to the appropriate FTP node. Are the mutiple FTP nodes required or is there a better way of doing this? Perhaps only one FTP server is required and then each node would serve as a separate file server
View 1 Replies
View Related
Feb 7, 2011
I'm looking at setting up a couple automated systems: Here are a few examples:
* Internal accounting system to download and process emails
* Public web server to visit
I could put each system on its own separate box -- for example, it's generally good practice to separate anything that external users have access to (such as a webserver) from internal processes such as accounting. Now, rather than dishing out the money for two separate servers, could I get away with just installing new instances of VMWare on the same box for each system?
To give you an idea, these are not large scale computationally sensitive systems. The accounting one is simply downloading and tallying emails, and the latter is just a webserver with maybe 5 hits per day on a good day. I could definitely pick up a new box for say $50, but I wanted to know the general practice of using VMWare on the same box versus two separate boxes.
View 2 Replies
View Related
Dec 11, 2010
I have recently upgraded to 10.04 and I am trying to access my apache and sshd servers from the net but I have not succeed so far when those two are using their regular ports.If I change their ports to something greater than 1024 they work fine.80->8010 22->4567(I can access the servers when I am connecting from local net: 192.168.1.0/24) Is this restriction build into the new kernel? Is there something I can do to fix this without recompiling the kernel?
View 3 Replies
View Related
Apr 1, 2011
I'm curious if anybody can shed some light for me in this department. We're in a large environment with a Windows DHCP Server. We have been tinkering with LTSP on Edubuntu as thin and fat clients. It works great, but right now we just have 1 server handling the lab, which works fine unless we want to expand, which may be very possible.
These are the instructions I received:
Login to your windows server and load the DHCP configuration screen
Create a DHCP reservation for the MAC address you obtained
Add the configuration options below to enable the machine to boot from the LTSP server
017 Root Path: /opt/ltsp/i386
066 Boot Server Host Name: <ip address>
067 Bootfile Name: ltsp/arch/pxelinux.0 # Specify CPU architecture in place of 'arch', for instance 'i386'
From: [url]
I'm curious, what if I want to have multiple Ubuntu servers on the network that I want to have bootable? For example, let's say I have 3 labs, and 3 servers. Server A to Lab A, Server B to Lab B, and Server C to Lab C. I want all C's computers to boot to C, and B to B, A to A, etc.
1 - How would I add multiple entries on the Windows DHCP Server to allow all 3 (A B C) servers to boot?
2 - How would I be able to isolate the clients so ONLY Lab A clients boot to Server A, etc?
View 7 Replies
View Related
Sep 21, 2010
I have a machine (lets called it machine 1) with two networks card, eth0 and eth1. Both have static IPs. Once in a while the machine refuses to give access to the Internet via Firefox (eth0 is the route to router). Other machines on the network have no problems accessing the Internet. Eventually the machine would just magically start working again, but this time it just seems to have stayed broken. I've done some simple diagnostics and found:
a) I have another machine running Apache with a Wiki on our network - [URL]. Machine 1 is unable to connect to this Wiki. I get 'the connection has timed out'. I can ping 192.168.1.73 and it responds in the usual fashion.
b) If I try to ping www.google.com it times out with: ping: unknown host www.google.com. I can ping google using its IP address.
c) On machine 1 I have tried traceroute on both www.google.com and its IP and I just get:
1 * * *
2 * * *
And so on until hop 30. Doing this on any other machine on the network works. So while it seems I can ping internally in our network and outside, but when it attempts anything traceroute or URL related it does not work.
View 7 Replies
View Related
Jan 19, 2010
I currently have a group of 3 servers connected to a local network. One is a web server, one is a mysql server, the other used for a specific function on my site (calculation of soccer matches!).
Anyway, I have been working on the site a lot lately but it is tedious connecting my USB hard drive to each computer and copying the files. This means I am not backing up as often as I should...
I have a laptop connected to this same network that I use for development so I can SSH into to the computers, is there any software for ubuntu that can take backups of files that I choose on multiple computers? I know I could rsync but is there something with more or an GUI?
Then I can just every 2 days move the most recent backup from my laptop to the USB drive. Then I will have the backup stored in 2 places if things go kaboom somewhere.
View 9 Replies
View Related
May 20, 2010
I'm running Ubuntu Server 10.04 and have a secure (SSL/TLS) FTP server on it. However, I'd like to use this FTP server to update programs I made using Microsoft Visual Studio. Unfortunately, in Microsoft's infinite wisdom, secure FTP servers cannot be used. Rather than use an insecure FTP server, I want to set up my secure FTP server to be able to access whatever I need to on the machine, and then add an insecure FTP server that only has access to the directory where I put my update files. I am currently using vsftpd as my FTP server. Is there any way that I can set up two FTP servers on this single machine?
View 6 Replies
View Related
May 20, 2010
I have an old pentium 3 computer that has ~7 NICs installed. These NICs are attached to modems and other networking equipment. According to the linux ping page on computerhope.com, it seems that one could send a ping from a certain specified NIC. How would one go about this?
View 6 Replies
View Related
Jun 16, 2009
I have a CentOS 5.3 box with three network interfaces in it. Each interface is attached to a separate VLAN and I want traffic to stay on each network segment.What I can�t figure out is why I cannot get each interface to have its own gateway and everything gets sent through the default gateway.The basically takes my possible 3Gb total bandwidth and throws it down a single 1Gb pipe.Then on top of that, if I take down the interface (ifdown) that has the current default gateway,I loose contact to the other two interfaces.When I look at the routes, each one of the interfaces shows the gw as 0.0.0.0 and defers to the default route. So I delete the route and try to add a new route with:
[root@testsan ~]# ip route add 10.1.15.0/24 via 10.1.15.1 dev eth2
but end up with the error:
RTNETLINK answers: Network is unreachable
[root@testsan sysconfig]# cat network
NETWORKING=yes
NETWORKING_IPV6=no[code].....
View 5 Replies
View Related
Mar 26, 2010
I'm having a problem with my webdav share. I have a secure webdav folder that gets accessed via a non-standard port and requires basic authentication. I can connect and interact with it fine via cadaver. However, when I try to connect from nautilus, it says "Access was denied." To make it even stranger, sometimes I can click on the folder in nautilus (it still mounts) and access it. Sometimes not (just repeats the error message and won't show me the contents). I may not even un-mount it, but just look at other folder, then click it again and be able to access it, but again - only rarely.
I asked a friend to try connecting from his windows vista computer and it would not work. It would not work from my windows XP virtual computer either. However, it mounts and works just find from my work computer (also Windows XP).
So it seems to be a 50/50 chance that the drive will mount on any given computer/system and work. Do anyone know what the problem may be? I'm guessing user permissions, but I can't figure out what.
I've made sure the webdav folder is owned by www-data and www-data has read access to the password file as well.
When I try connecting from nautilus, I get this in the log file:
Code:
Here is one of the (many) sites I've tried looking at: [url]
View 4 Replies
View Related
May 10, 2010
i found this video, and i really want to do the same. *newbie needs to learn [URL]...my question is, what need to be installed and how?
is there any specific configuration to make it works?
and will it work if i want to connect from Ubuntu to Fedora ?
View 1 Replies
View Related
Apr 1, 2010
I have managed to configure AWstats to work from one server to access the log files for multiple websites on multiple servers and even managed to write a little front end php site to access all the different conf files. I want to know if there is a way of combing two conf files for the same site but are on two different servers in a loadbalanced situation. so my conf files look something like: [URL].. I have to monitor bandwidth for our websites and its gets tedious switching between the various conf files for the same site and totaling it up so I was hoping I could combine the output of both conf files on screen using some funky command in the awstats.pl script
View 1 Replies
View Related
Aug 11, 2010
I just created a 2nd user on my computer. I've got the hard drive that ubuntu runs on, and then a 2tb drive for media. If the 2tb is mounted on my desktop, it won't show up on his desktop even if I'm logged out. It won't show up on his unless I unmount on mine.
If I'm logged out I'm obviously not using it. So why doesn't it show up? He has all privileges. Is there a way to make this work without having to unmount?
I'm running karmic btw. If you need computer info let me know what to type into the terminal and whatnot and I'll paste it all here!
View 4 Replies
View Related
Dec 18, 2010
I installed 2 nic cards in my pentium 4 computer running rhel5 to be used as a proxy server and connect 2 computers in each network card for testing . The problem is I cannot ping or use the 2 cards simultaneously . One must be deactivated for the other to be ping . The Network configuration panel indicate both card status as active but i can only ping the first to be activated . I have already set onboot=yes to both cards but still the same result after restarting . The nic cards are onboard - Realtek RTL8139 and pci -3com 3c905b.
View 4 Replies
View Related
