How To Allow Two Machines On Virtual Network To Communicate Statically

Feb 18, 2013

Implement the procedures required so that machine 1 and machine 2 can communicate statically with one another. Outline the TCP/IP settings to be used on each of the machines and set this machine up accordingly.

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Ports On Different Virtual Machines

Nov 6, 2011

I have a single physical machine A (Windows XP). On A, I have 3 virtual machines (A1,A2,A3) If a want to communicate with port 4444 on virtual machine A1, can communicate to the same port 4444 on machine A2, All the VMs below exist on the same physical machine.

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Lost Internet Connection With My Virtual Machines

Feb 18, 2013

Implement the procedures required so that machine 1 and machine 2 can communicate statically with one another. Outline the TCP/IP settings to be used on each of the machines and set this machine up accordingly.

I followed this guide [TUT] Setting a static internal IP (Windows and Linux)but what has happened is that now the two machines can't connect to the internet.

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How To Connect Multiple Virtual Machines On Windows 7

Apr 22, 2013

I have installed 4 virtual machines using virtualbox on a windows 7 host and i'm searching how i could connect them so as they can communicate each other.

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Cisco :: 5508 Virtual Machines With Bridged Connection / No IP From DHCP?

May 31, 2011

We are experimenting with virtual machines running on some laptops here as part of a future deployment.Equipment in use:

-5508 WLC
-1262 LWAP
 
The actual operating system has no issues connecting to the wireless. When you start the virtual machine on any client machine (OSX, Win 7, Win XP, anything) it is unable to get an IP through an external DHCP server when the VM is set up to use a bridged connection.This works fine with Autonomous access points and over cable all mapped to the same VLAN. Helper addresses are configured on the VLAN.Is this a limitation of the WLC where it cannot provide more than one IP address per MAC? Is it a limitation of CAPWAP? Or is there an option to turn of DHCP snooping (which I suspect to be the cause of the issue)?

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Cisco Infrastructure :: 2509 - Create The Virtual Com Ports On Windows And Linux Machines?

Sep 5, 2011

I recently acquired a 2509 router that I plan to use as a serial device router.  My question is, how do you create the virtual com ports on Windows and Linux machines to point to the TCP address:ports in the 2509 router?  Is there software or drivers that do this?  Or something third-party?

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Can't Ping Other Machines On Same Network

May 9, 2012

Other machines on my network can't seem to be able to see my machine, but i can ping them all. It can't be anything to do with the authentication because i have just reformatted my machine and re-added my machine to the AD.

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How To Create Network Bubble With 4 Machines

Apr 12, 2012

I need to create a network bubble..means..Let say I have 4 machines having IP address 10.1.1.1,10.1.1.2, 10.1.1.3 and 10.1.1.4 (these are not actual IP's, using them just for explaining). These machines are connected to public network. At a given point in time, I need to isolate these machines from the public network in a way where - All these 4 machines can talk to each other using the assigned IP's. - These 4 machines cannot talk to any other nodes in the public network. no other machines outside these 4, will be able to ping these machines.

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Cisco Firewall :: ASA5510 Statically Routed Subnet Confusion

Feb 14, 2013

This question is in the context of servers sitting in a colocation environment behind an ASA5510 with security plus license.Our colo provider is going to be statically routing a /28 public subnet to our ASA5510 (say 1.1.1.0/28).  We will also be getting a single IP (say 2.2.2.2/30)  on a small router-to-router subnet (2.2.2.0/30) to which the 1.1.1.0/28 subnet will be statically routed to our ASA5510 from our colo provider.I will obviously set the outside interface of the ASA to be 2.2.2.2/30 so that the colo provider can route the 1.1.1.0/28 subnet to it.  I will also set a default route to 2.2.2.1 which is the IP of our colo providers gateway (and the router that will be statically routing the 1.1.1.0/28 subnet to us).
 
We have various servers in the same rack as the ASA (connected via a 3750G switch).  Some of these servers need to be exposed to the internet (web, email, etc servers) and some do not (database servers).I'm considering 2 different ways of designing the network but I have questions about both and not sure which way to go:
 
1) Scenario #1: Using NAT and private IP's for all servers.In this scenario where/how do I assign the internal network (say 10.1.1.0/24) and the public routed subnet (1.1.1.0/28)?  I assume the internal 10.1.1.0/24 is an inside network assigned to the interface connected to the 3750G (to which all the servers connect).  However, where do I assign the public routed subnet (1.1.1.0/28) since it is somewhat "nebulous" in that it has to reside somewhere on the ASA so that it can then NAT to the internal (10.1.1.0/24) IP's.  Also, is it considered an outside or inside network - and on which interface? My confusion is that If its added to the outside interface then won't that conflict with the 2.2.2.2 IP to which the colo provider is routing our 1.1.1.0/28 subnet to? And if its on the inside interface connected to the 3750G then wont that conflict with the 10.1.1.0/24 private IP range of the servers?
 
2) Scenario #2: Using public IP's for all servers:This scenario seems more straightforward to me: I would want to assign IP's from the statically routed subnet (1.1.1.0/28) to my servers so that range would be configured as an inside network on the interface connected to the 3750G (to which all the servers connect).  This would be configured on a specific VLAN (say vlan 50).  I would then have another VLAN (say VLAN 100) on the 3750G that has a private IP range (say 10.1.1.0/24) so that non-public servers (database, etc) would reside on there. All public servers that need access to private servers would have a NIC on both VLANS (50 + 100).  My question is is this the correct way of approaching this?  I also like this because I dont have to worry about NAT and the ASA can act as a router/firewall and things are clear in terms of whats happening.
 
Ultimately I'm not sure which is the best way to go in terms of having all servers on a private IP range and just NAT to them (as per scenario 1), or implement scenario 2 where servers have two interfaces.The main thing thats bugging me from scenario 1 is I'm not sure where/how to assign the statically routed subnet (1.1.1.0/28) on the ASA? (inside? outside? which interface?).

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Cisco Switching/Routing :: SG200-26 Not Accessible At Statically Set IP Address?

Mar 18, 2012

I manually set an IP address in my new SG200-26, and turned off the dhcp client.  I cannot access the webpage or ping the switch at the statically set IP.  I have also run a network scan and tried accessing the switch at all of the IP addresses in my DHCP Pool that were being used, it is not available there either.

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Servers :: Add Machines To New Test Network Domain

Jan 17, 2012

how do I set up a test domain? I'm running Server 2008 std and have not gotten the DNS server configured right. I'm looking for a guide to take me through the process so I can experience success and get the feel of a working LAN.

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Windows 7 And XP Machines - Network Resource Access?

Jun 20, 2011

We have a Windows 7 machine and two Windows XP machines. We use windows sharing of resources over a cisco wireless network. Sharing works fine on all computers for files and printers, however the DVD/CD Rom drives are not accessible.Sharing is enabled on all of these devices.When we try to access these DVD/CD Rom drives we get the following error message:Windows cannot access //computer name/resource name.You do not have permission to access //computer name/resource name. Contact your network administrator to request access.

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Servers :: Changing Network Information Of Multiple Machines?

Sep 25, 2012

I have a list of servers that will be migrated from one subnet to another. Is there a script that can take my file that has the server name and the new IP address and modify the existing servers' network from the list? I want to place the script on the servers before I am ready to change subnets for preparation.

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Cisco Wireless :: SG200-8 When Connected To Network / Cannot See Some Machines

Apr 5, 2013

I'm pretty sure there is a very simple fix.  When I am connected to my wireless network, I cannot see SOME connected machines.  I feel like I have a domain named incorrectly.  All of the items on my network are new...
 
Router - Cisco RV180
WLC - Cisco AIR-CT2504-K9
AP - Cisco AIR-LAP1041N-A-K9  <- 2 of these
 
The AP's are connected to Cisco SG200-8P, as is the 2504.The SG200-8P is connected to a Cisco SF302-8P, which is connected to the RV180 router.i don't have any separate VLANs setup (at least not on purpose)

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Cisco Firewall :: Statically PAT Multiple Internal Hosts To One External Host 5510

Feb 20, 2012

I am working on replacing our Checkpoint Firewalls with ASA's, and am running into the following NAT problem. On some of our Checkpoints, there are external NAT's that are mapped to multiple internal hosts based on ports.Is there any way to translate that to the ASA? I'm not sure the ASA will let you have multiple internal hosts mapped to one external IP using static NATs. The main issue, is these are alarm panels that receive data from external hosts (the traffic is initiated externally on the Internet) so I can't use dynamic PAT with this.

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Cisco Firewall :: ASA 5505 / DNS Not Resolving To New Machines On Network After Increasing DHCP?

Aug 14, 2012

I am having a very strange issue with connecting new machines to reach the internet.We have a ASA 5505 which the previous tech configured the DHCP pool to 192.168.1.60 - 192.168.1.110
 
We ended up reaching our limit which I changed it to: 192.168.1.60 - 192.168.187
 
Then next day when I arrived to work, our DC was hung from windows updates. Once we got everything back up, every computer currently on the network can reach the internet/VPN tunnels etc. So (continuing with my day) I created a new server in a VM (Hyper-V)I can ping everything internally (even the router) 192.168.1.1, but I cannot resolve DNS. I have configured a static IP, tried Dynamic IP.I have looked for any ACL indicating to block outside the range of the old DHCP pool but no luck.On my local maching I can ping the DNS addresses, but just not on the new server.

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Linksys Wireless Router :: E4200 - Open Port 8080 To All Machines On Network?

Aug 17, 2011

I own an E4200 and my wife and I use Goodreader on our ipads at home. To add docs to goodreader we need to connect to the ipads ip on port 8080 but the E4200 is blocking all traffic for it. How can I open port 8080 for our 2 ipads?

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How To Communicate A Network Switch With PC

Feb 9, 2012

A brand new network switch how i check this network switch on may pc how to communicate this switch very 1st time with pc

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Network / IP Fail Cannot Communicate With Primary DNS Server

Sep 11, 2011

Me and my wife just moved into a new apartment and got subscribed to a new broadband provider. They sent us through a cisco router (model no.epc2425) and we created a WPA2-Personel secure network, with encryption type TKIP. I have connected my macbook to it, my iPhone to it, and my wifes samsung netbook (running Windows 7) but I cannot connect my laptop running vista to the internet. I've tried playing around with different network security and could connect to it on WEP but I didn't want to keep it on that and I couldn't connect the net-book. The rest of the security types and encryption types have the same response.The computer connects to the network with an excellent signal, but it is the only computer that cannot connect to the internet through this network. I never had a problem like this with this computer and have tried it on other networks.When I run windows network diagnostics it says 'Cannot communicate with Primary DNS Server (193.150.193.150)'Network diagnostics pinged the remote but did not receive a response.'

When I try to automatically get a new IP setting for network adapter it tries to repair but then says 'there still seems to be a problem with your connection'. Likewise when i click 'reset the network adapter' the repair leads back to cannot communicate with primary DNS server.I have tried a wired connection, router to computer, but as soon as I plug it in I get the message 'Windows has detected and IP address conflict' - and it once again connects to the network but not to the internet.I don't know if this makes any difference, but this is a British computer and I moved to Sweden, obviously using a Swedish ISP..i used to have this problem, you need to set the network adaptor to all automatic, your new cisco router uses uPnP so your IP conflict is probably a result of your unconnected laptop trying to connect to the same IP address as another PC on your network (eg/ 192.168.0.5 would be used by your iPhone, but your laptop has reserved that IP address for itself), to fix this, go to network and sharing center, navigate to adaptor settings on the left pane, right click the wireless card and choose properties>IPv4 properties, set everything to automatic, including all things in other tabs and click advanced and make sure DHCP is enabled on that card.Then reboot and try again.''I had a look at the wireless card (it's Atheros AR5007EG Wireless Network Adapter) and on the IPv4 properties it's already on 'obtain and IP address automatically & obtain DNS server automatically' as well as 'automatic private IP address' in one of the tabs.

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Cisco WAN :: 3900 - Getting LAN Network To Communicate With WAN Gateway?

Mar 12, 2013

I have a cisco 3900 integrated services router. I am a little new to the cisco IOS. I am having an issue getting my LAN network to communicate with the WAN gateway. From hosts I can ping the interface IP address but not the gateway. I have used the default route command of IP route 0.0.0.0 0.0.0.0 [wan gateway from ISP] I have already set up NAT, DHCP, I just cant seem to get the internet working, the following is my config.

Code...

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Cisco :: Network Design Task - None Of The Domains Will Be Able To Communicate With Each Other?

Mar 6, 2013

I've been tasked with designing a network consisting of 3 separate broadcast domains with each one representing a separate business accross 3 separate floors. None of the companies should be able to communicate with each other.I've been told that the design should only represent the first 3 layers of the OSI model so I'm only looking at Cabling, Switching and Routing.

I don't expect you all to tell me exactly how I should do this, however I just need a starting point. My main issue is with routing. I'm aware that each port on a router represents a broadcast domain so if I use one router, 3 broadcast domains, does that means that none of the domains will be able to communicate with each other? Should I use more than one router or can i get away with one? Also just so you are aware I've been told not to use VLans and each broadcast domain must have its own ip address schema.

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Cisco VPN :: ASA 5515 / VPN Users Cannot Communicate With The Internal Network

Aug 12, 2012

I have two ASA 5515 configured in failover (active / standby).I used the ASDM wizard to create connections through ipsec cisco client.Currently users are able to connect but can not do a ping to anywhere inside the network.
 
The ping request is received from the internal client but the internal client can not communicate with the remote user.The ping fail also directly from the ASA.
 
When the remote client is connected an entry is added to the routing table:

S 192.168.10.130 255 255 255 255 [1/0] via <ip of the ISP>, "WAN"

as if that IP was reachable directly from the Internet.I tried changing the settings of the NAT but in no way I can make them communicate.The ultimate goal would be to create different users with different access permissions to the LAN and the other subnets in the company.

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Cisco WAN :: 2811 SRST / K9 Fails To Communicate With Network

Sep 14, 2011

I have a Cisco2811 SRST/K9 router with a four port FXO that is part of our phone system.  It won't ping to anything on the network except for one particular switch.  I can ping that switch (but nothing else) and that switch can ping the router and telnet into the router; however, when I plug the router into any other switch on my network, it will still only successfully ping that one switch.  It won't ping the switch that it's physically attached to.  I can see the router from the switch when I do a Show CDP Neighbor.  And I can see the switch when I do a Show CDP Neighbor from the router.  But it won't ping.  When I do a Show Adjacency from the router, it returns only that one switch.  I've tried a Clear ARP on both the switch and the router.  I've also compared the config from the router to the config of a working router on the network and everthing looks the same. I can ping anything on my network from these switches - except that router.  I even tried changing the default gateway of the router to be the ip address of the switch with which it can successfully communicate.

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Home Network :: Virtual Servers On One IP Address

Aug 6, 2012

I have one dedicated IP issued to my home, along with another dynamic one if I need it(but I don't use it). I have a webserver, mail server, and name server up and running on a single machine exposed to the internet with my static IP. I have a domain name registered to my IP address. My webserver and name server work great, but I am having difficulty with the mail server. In order to have mail work correctly, I have been told that I need to get reverse DNS setup for my domain (something I had neglected to do). My nameserver responds to reverse lookups correctly when issued locally, but it looks like queries from the internet never reach it (I think my ISP catches requests upstream). I contacted them and they put a PTR record in for my IP pointing to ns1.mydomain.com. This all works fine, but the thought occurred to me that if in my hosts file I put my MX record in as mail.mydomain.com., any mail clients that do a reverse lookup of my IP won't get mail.

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Servers :: How To Create Virtual Network With Domain

Mar 10, 2011

I am taking a college course using Microsoft Windows Server 2008 Administrator Lab Manual. The labs assume that you are in a MS lab with the ability to connect to thier domain and servers. I want to create my own virtual lab to simulate MS environment so I can follow the assignments. I have VirtualBox installed. I am a completely new to servers and networking

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Boot Virtual Desktop From Hyper-v On A Network

Apr 29, 2013

I already know there's an easier way of doing this; DHCP, TFTP and CCBoot.But this is not what I want.I have Hyper-V installed on a Windows Server 2008 R2 with a Windows 7 VM installed on it.What I wanna do is take this image of Windows 7 and boot it on another PC on the same network. The client PC doesn't have a hard disk so I want to boot it using a USB stick.I've already installed and configured Remote Desktop Roles and was able to access the Hyper-v VM using a browser locally.So what can I do next? I can't take the .vhd image and put it on a usb stick because it's too large (30GB) and converting it to .vdi would still be large.

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Virtual PC And Windows XP Mode Network Connectivity

Jun 17, 2011

I have 64bit Windows7 Professional OS, and have installed Windows XP Mode, I have a wireless and ethernet-capable Router. My HP PC has both wireless and ethernet connection capability.When running Windows 7 alone, the Internet access is connected by wireless to the Router, and runs well but when I start Windows XP Mode, the Intel 21140-based PCI Fast Ethernet, complains if the Ethernet Cable is not plugged in to the Router.When I plug it in, I still get no Internet connectivity, the error is Windows cannot obtain an IP Address. How can I have the wireless and ethernet connectivity co-exist together or separately when required.

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Adding Virtual Network Card And Assigning IP?

Sep 3, 2012

I have a win xp system which connects to internal network & Internet. The problem I have is, for each work i need to change the IP address.

Ex: For internal network the ip should be 192.168.0.1 To connect to internet the ip should be 192.168.1.1

Now I want to be connected to both internal network as well as internet at the same time. So what should I do ?

* I can not add another physical network card.

* I can not change the IP's of any other system or config servers etc... (as it is used by our internal application, doing so will make a mess.)

* I have the admin rights so any software changes to my system can be done.

So i was hoping to add a virtual network card, and configure it to the new IP. So can that be done ? if so how ?

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Home Network Access From Virtual Machine

Mar 3, 2013

I recently installed VMplayer on my Win 7 machine, and I installed Win XP on the VM. So far everything seems to work fine. However, on my home network I have a Linksys NSLU2 mini network server which has a flash drive plugged in that contains my files that I access from any of my home PC's. No problem accessing it from the Win 7 machine, but when I try to setup a "new network place" on the XP system, I get an error telling me that the address is not valid.

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Cisco :: LMS 3.2 Virtual Network Manager Home

Sep 8, 2011

LMS 3.2  Virtual Network Manager Home  i am getting this error on lms 3.2.1 in vnm.

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Ubuntu 12.04 / Virtual Machine Network Configuration?

Sep 22, 2012

My host OS is Ubuntu 12.04 and I am running a LAMP stack there. I have several Windows virtual machines (XP and Windows7) running in Virtual Box so I can test IE6, IE7, etc..

I frequently move this laptop between a few wireless networks and sometimes I am without an internet connection. I pause and save the VM execution state. Regardless, I want the virtual machines to be able to access the sites I am hosting locally on Ubuntu. The virtual machines do not need regular internet access. On the host I can point the browser at localhost or any subdirectory that apache is serving and view pages I've set up already. What is the best configuration for this?

Should I use Bridged or NAT virtual adaptors and should the guests use static IP's or DHCP ? I've also considered using ad-hoc networks between guests and host, but I think this will require that the host disconnect from any other networks (with internet access).

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Home Network :: D-Link DSL-2542B Virtual Host?

Feb 23, 2011

I've been trying to set-up DMZ for my DSL-2542B-SE_1.00_06112008.

But the problem is when I access my IP from WAN, It connects to Router Control Panel, I have set DMZ IP as 192.168.1.2 which is the my computer where I have the Server set-up.

Now I've disabled DMZ but still I can access to my router from WAN through my IP.

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Networking XP Machines - Can't Log In?

Feb 22, 2011

Running Windows XP Im a bit Dizzy as i can't seem to workout what's going wrong or what im doing wrong lol!!!8 Pc's on the network, all can view files etc.apart from one Pc Lets just call this "Bob1"It keeps asking for user name and password, now there's no user name or password on the giving pc, file and sharing is open and all the right ports giving. what i can't understand is that the reaming 7 pc's on the network has the same setup and files permissions, on the same subnet and can ping each other to my knowledge.So just to prove myself wrong i made a password for the pc that was asking for one on the network and this still did not work.so to cut the story short 7 pc's can search each other fine but on "Bob1" keeping asking for user name and password.

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