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 ?
I would like to set up an ubuntu server to forward outside requests directed to different domains to different computers on my local network. The bind is I only have ONE public IP.
Here's an example of what I want to do.
- if a request is sent to www.first-domain.com, I want to forward it to a local server (say 192.168.0.10)
- if a request is sent to www.second-domain.com, I want to forward it to a local server (say 192.168.0.20)
and so on...
I will need to forward these requests not only for web sites but for other services such as SSH, mail, RDP, VNC, etc etc PS Once it hits those local servers, I know how to use iptables to forward them as desired.
At the moment we have one SSH server with the private key being on a usb flash drive, and the public key being on the server in authorized_keys2. Now that three more servers are coming online, should we generate new keys, so we have muliple private and public keys (one pair for each server), or use the same two keys to access all the servers
View 5 Replies View RelatedI recently purchased a block of 5 IPs from Comcast. I have a computer running Arch Linux connected to the Comcast gateway they gave me. On my connected computer I have 2 Windows XP virtual machines running. Now I was wondering how can I make each of those virtual machines have a different public IP, because currently the only thing I can get working is have the computer and both virtual machines sharing the same public IP.
View 3 Replies View Relatedi have a commercial ISP connection with 5 IP addresses available and i want the following configuration note when i say domain group i am refering to a group of top level domains (not subdomains) owned by the same entity (company) with their A records pointed at the same public IP for a single server
[code]...
iptables and multiple public-facing IP addresses. With the current setup I have a public-facing firewall with iptables which will then forward traffic to a LAN IP. I will hopefully be allotted 1 private IP per public IP, which I hope will make this much more simple. For example, I have server A with the LAN IP of 10.0.0.1 which I would like to have traffic forwarded from 5.0.0.1, the public IP. I also have server B with LAN IP of 10.0.0.2 which I would like to have forwarded from 5.0.0.2, the second public IP. From what I have read and understood, this should be a simple task, however I would just like to double check to make sure that it is in fact possible, and if so, how would it be recommended that I go about doing so. Essentially, I need to forward each public IP to a corresponding LAN IP with all ports.
View 3 Replies View RelatedWe have a new Bussiness DSL line with 16 public addresses.What we want is to setup a DMZ to run some services and internet to the LAN. Here's a schematic of what we want:
Code:
Backup Internet Main Internet
connection connection
| |
| |
SDSL Modem BDSL Modem
[code]....
The webserver has the following settings:
IP: 12.34.56.125
subnet: 255.255.255.240
gateway: 12.34.56.126
What IPTABLES rules do i need to setup to "see" all IP's in the DMZ-2 from the internet?
If i have two domins [URL] and [URL], can i point it to same IP Address in DNS?.I had already added namevirtualhost in my Apache.If possible, is there any risk,disadvantages.
View 11 Replies View RelatedI 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 View RelatedI 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 RelatedIn 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?
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 RelatedI 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 RelatedI 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 RelatedSo 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.
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 RelatedI 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
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.
Can someone post how to use irssi with bitlbee . I know how to use the Bitlbee public servers but I would rather install it and use it that way.
View 4 Replies View RelatedI'm on Natty Narwhal and wanted to play with ssh but I can't seem to get ssh to work without having to specify a password. I've installed openssh-server. I've generated a public/private key pair:
ssh-keygen
I can see my id_rsa and id_rsa.pub and known_hosts.
am logged in as user pgroarke and simply trying to run ssh on the same box.
Regardless of whether I specify either localhost or hostname I still get asked for a password:
ssh -i ~/.ssh/id_rsa.pub pgroarke@spock date
pgroarke@spock's password:
Here is the relevant contents of my /var/log/auth:
Jun 18 16:21:37 spock sshd[30357]: last message repeated 2 times
[Code]....
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 RelatedI'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.
I wan't whatever file/folder that ends up in the public folder to automaticly be open to whosoever access that folder. Right know I have to "chmod -R 777 file/folder.* "
View 4 Replies View RelatedIn my house I have a small computer running ubuntu karmic that works as a server/media center.
I would like to have a folder (my ~/public folder) openly available to the entire world via anonymous ftp.
I have read somewhere that the defauld vsftpd config is basically this: no local user login, anon only and sharing a folder called /home/ftp, but I can't get this to work.
Here is my /etc/vsftpd.conf file:
Code:
I am going to be away semi permanently and want to create a VPN that will allow me to act as if my laptop was connected to my home network.
All I want is for the drives to be accessible so I can use them for primary access as if they are in the laptop.
Questions:
1. Can I set up a Linux VPN that is secure using public WiFi (or however I connect to the net) when I am on the road?
2. I will be using a desktop (32 bit) as the server, what version of Linux would be best for this?
3. If my server is linux and the server drives are NTFS will they be accessible using a windows machine? (I will be double booting the laptop)
4. I would like to set up a pass-code that is stored on the laptop so that only that machine can get access.
This can be up to 255 characters and encrypted so it would be very hard to break. Even I would not know what it is. (I would store it on a pen drive and be able to recover it from there.)
One more. I might want to add separate users that only have access to their one drive, not the server drive. Is that OK?
We have an Iomega StorCenter ix4-200d in our office. for past two days the shared public folder is not getting mounted. but it's working fine through the web interface i.e user can upload/download.that rules out the permissions problems.
I am providing the output of mount command:
t227@t227:/var/log$ sudo mount -t cifs --verbose //192.100.100.37/public /mnt/public/ -o username=shrey
[sudo] password for t227:
Password:
[Code]....
in fact i can't access any of the folder which I am having permissions to rw.but it's working fine through the web interface.
P.S:- On windows also I can't mount the folder.
Basically I am trying to set up my own server so that I can ssh into it from anywhere. I am able to SSH into my server when I use the LAN IP of my server but I am not able to SSH into it if I use the public IP address. I have read many threads and in my opinion I've tried almost all of the common fixes suggested. One possibility may be that my ISP has blocked port 22. I have taken this into consideration and sent them an email and I'm presently waiting for a reply. However, I highly doubt that my ISP has restricted acess to port 22. I would really like to be able to SSH into my server from anywhere.
1). I installed openssh client/server using the following commands:
Code:
sudo apt-get install openssh-client
sudo apt-get install openssh-client
2). I forwarded port 22 on my router. (see attachment for the settings)
3). I modified /etc/ssh/sshd_config such that my server has a static LAN address.
contents of sshd_config file:
Code:
# Package generated configuration file
# See the sshd_config(5) manpage for details
# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to .....
I then entered the command:
Code:
sudo /etc/init.d/ssh restart
4). I turned off the firewall using the command:
Code:
sudo ufw disable
5). Here is the output of the IP tables:
Code:
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
GPG error: [URL]... hardy-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5 Tried this with no luck:
sudo bash
apt-get clean
cd /var/lib/apt
mv lists lists.old
mkdir -p lists/partial
apt-get clean
apt-get update
I have setrup Ubuntu Enterprise Cloud on a single machine.
1) I am able to run the instances from store (karmic) On running the instance two ips are assigned (public and private) as 10.B.C.X and 172.19.1.2
2) I am able to connect to the instance (10.B.C.X) through ssh (using key)
3) However I am unable to access the instance outside the UEC (using public ip). When I try pinging, I get an error Request timed out or sometimes Destination host unreachable.
4) I have provided the following access using euca-authorize
Details below:
1) Hardware : Blade (64 bit)
2) Version : Ubuntu 9.10; Eucalyptus the one using apt-get install eucalyptus
3) Topology : Single physical system
4) Mode : Managed no-vlan
[Code]...
Code:
# Sample configuration file for the Samba suite for Debian GNU/Linux.
#
[code]...