Networking :: Multiple Public IPs With VirtualBox?
Jan 4, 2011
I 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.
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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 ?
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Mar 5, 2010
i 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]...
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Jun 3, 2011
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.
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Nov 27, 2008
We 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?
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Jun 21, 2010
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.
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Apr 28, 2011
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.
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Mar 26, 2010
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
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Nov 30, 2010
I'm running Ubuntu 10.10 x64 as a guest in VirtualBox on top of Windows 7. I recently bought a second monitor, and I want to set up my Ubuntu guest to use both monitors. I configured VirtualBox to give two displays to the VM, and two windows are displayed when I run the VM, however, the Ubuntu guest only uses the primary screen and does nothing with the second--the second screen is just black.
When I go to the monitor settings, only the one monitor is detected (as an "unknown monitor") I have the latest guest additions installed and the driver under System-Administration->Additional Drivers is shown as installed and working correctly. I don't have any issues with the single display--it shows in the correct resolution, and works fine if I set it to fullscreen or seamless mode. Any thoughts on getting Ubuntu to detect the other screen?
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Mar 29, 2010
I have a rather urgent problem with my network, I got two virtual network interfaces one internal and one external. The problem is; I can't get connection to internet. The external NIC is set as a NAT and the internal is... internal.
/etc/network/interfaces
auto eth1
iface eth1 inet static
address 192.168.1.200
netmask 255.255.255.0
Running with this configuration makes my internet connect go away, however if I remove the configuration for eth1 everything is working fine.
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Aug 2, 2011
I'm trying to write a p2p file sharing program using python's built-in libraries. Everything is going well. The only thing is that i'd like to be able to use openssl public and private keys so only a host with the public key could access/decrypt the filesharing. I've gotten these libraries (httplib, basehttpserver, ssl, os) to work using just a pem file containing both the public and private keys but no success with them seperately. Can someone point me in the right direction or offer an alternative? PS, the goal of the project is to create an anonymous, decentralized, secure file sharing program. I want to be able to upload this to sourceforge so everyone can use it, if that's any incentive
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Sep 24, 2010
I run the following file with the >log.log redirector and it does not capture errors.
#!/bin/bash
echo ************************BEGIN LOG******************************
date +"%m/%d/%Y %H:%M:%S $HOSTNAME"
cp -f /scripts/original/clamscans.log /scripts
[code]....
The following errors show up when I run from the file from the term window, but are not written to log.log:
tar: /public/public/clamscans/*.txt: Cannot stat: No such file or directory
tar: Error exit delayed from previous errors
mv: cannot stat `/public/public/clamscans/*.txt': No such file or directory
I know with windows you can add the 2>&1 to capture error data. Is there such a thing for Linux?
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Mar 3, 2010
How can I forward all traffic from a public IP to another public IP. Let's say I have a first debian box named box1 with eth0 = 1.1.1.1 and eth0:1 = 1.1.1.2 and I want to forward all traffic from 1.1.1.2 to "box2" located somewhere else over the internet and having for eth0 2.2.2.2 Both 1.1.1.0/24 and 3.3.3.0/24 are public IP ranges.
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Apr 20, 2011
ls -al ../public-back
drwxrwxr-x 4 apache apache 4096 Apr 19 03:32 templates
ls -al ../public-back/templates
drwxrwxr-x 2 apache apache 4096 Apr 19 03:33 content
[code]....
How do I move the contents of /public-back/templates recursively with permissions into /public/templates ?
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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?
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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].....
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Nov 18, 2010
I set up an SSH server on my home machine and finally figured out that I needed to disable password authentication to get RSA authentication enabled. Now I'm having problems with that too.ssh -v -i id_rsa ashtray@x.x.x.83
Code:
OpenSSH_5.1p1 Debian-5, OpenSSL 0.9.8o 01 Jun 2010
debug1: Reading configuration data /etc/ssh/ssh_config
[code]....
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Jul 18, 2011
I want to use my personal computer remotely. The problem is my computer is connected to a local network that I can't modify. I can connect from my computer to another one that has public IP via ssh. Is it possible to login to the "proxy" computer from somewhere and somehow use the connection established before to connect to my PC?
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Mar 22, 2010
How to do NAT in Iptables? ..I am trying to NAT IP public:Port to Internal IP:Port (202.a.b.c SMTP to 172.16.1.169 SMTP) ..
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Apr 13, 2010
I have a PC which has a Public IP.It is a webserver but it is not a proxy server.I want to be ableto do an ssh to the machines which are behind this webserver on LAN in one step.Right now I do an SSH to this webserver and then do an SSH to any other machine on my LAN how can I do it in one step.
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Jan 14, 2011
I just set up my ubuntu 10.10, which boot up by usb drive,
and I found a problem that I can't get my internet when I was
sitting in a public library. The firefox show me every website is
untrust. Normally, when first connect to this network, I need to
accept a library contract on webpage, which called spyder.local.
Does anyone could fix it? or there is something related to the
firefox setting. I currently keep every setting by default
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Feb 15, 2011
I have cent OS 5.5, i am not getting proper command for the same.
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Jun 14, 2011
I've been trying to get it work for 2 days now..
Here's my setup.
MODEM -> router (ISP one don't have access)
from the router it split into 2 connection one to my GW (linux debian) and another to a switch which is connected to a web/email server and the gateway.
My gw use x.x.x.27 and x.x.x.26 (everything I use on these ips is ok)
on the web/email server I have x.x.x.28 29 and 30
With this setup it's ok but I want to eliminate the link to the switch and make it pass thru the GW and i can't manage to get it work!
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Mar 11, 2011
I have problem with qmail. From today I can't connect to my server, when I login via ssh on serwe and check
Code:
telnet localhost 110
I can connect but when I try
[code]....
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Apr 23, 2010
My web server public IP is: 202.1.2.3 and it was natted to internal IP 172.16.1.31 just confusing why I am unable to browse http://202.1.2.3 from LAN? (I able to browse http://172.16.1.31 from LAN)
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Nov 25, 2009
As waht it says above. I can't access public wifi as any browser on every single distro i've tried (15+) won't load just stuck in perpetual loading. No error message or nothing.
Also the browser wouldn't work until i disabled ipv6 in about:config. All browsers do this. is there something i could do to disable it completely so i have a browser choice?
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Feb 6, 2010
I'm trying to connect to my Xubuntu box (zelda) remotely using my RSA key. I'm using Cygwin on my Windows box (link) to SSH in to the Xubuntu box. I've created the key and placed it in the authorized_keys file on my remote box. Here's where it gets weird. When I ssh into zelda the first time, it prompts me for my password. However, if I'm already connected to zelda and try to open another connection, it prompts me for my RSA passphrase. This is very confusing, and I have no idea what's going on.Here's my sshd_config file on zelda.
Code:
# Package generated configuration file
# See the sshd(8) manpage for details
[code]...
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May 7, 2010
After years with Linux and using ssh on a daily basis I have to admit I've never setup public/private key authentication and I've never run passwordless logon to ssh. It's not that I've never tried, I have - I've just never got it working. That to me is an almost alien concept as I am a tinkerer at heart and rarely stop until something is working the way I'd like it to. I get the principle of what's going on but I've always had a mental block about it.
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Sep 30, 2010
I've been searching for a while in forums about the issue I'm facing but couldn't find anything clear, or at least my net search skills are pretty lame. I'm facing a problem with prompted user password in a SSH chain connection when using authorized_keys.
I have: (1) Client - (2) Server - (3) Testing machine (testing machine is connect to Server via usb network)I've created keys for Client and Server, and updated authorized_keys in host machines with the key values: Testing machine has Server public key, and Server has Client public key.Until now everything is fine, if I try to connect via ssh the user password prompt is not shown since public key is found in authorized_keys.
For example: from Client: Code: ssh server Works fine, no password prompt.from Server: Code: ssh testing_machine Works fine, no password prompt.But if try to do that from Client only: from Client: Code: client:$ ssh server Works fine, no password prompt.from Client: Code: server:$ ssh testing_machine Asks for password.Bellow the verbose output from previous ssh command:
Code: ssh -v root(at)192.168.100.2
OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.100.2 [192.168.100.2] port 22.
[Code].....
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Jan 22, 2011
does somebody know how dnsmasq / iptables need to be configured such that requests to my public IP from lan are correctly NAT'ed to the host that handles them? Currently my routing device treats them like "oh, these are anyway for me, gnam gnam" which actually doesn't work.Unfortunatly setting up NAT rules that redirect requests from my lan correctly as they are redirected from wan is an option I would like to use only if there is no other possibility.I would like some kind of solution that treats packets that are sent to my public IP as normal packets that are not looped back before they even get out. So they would need to be at least sent to the wan gateway where they are directed back where my firewall can successfully treat them like all other public requests.
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