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• How to backup and restore ESXi 4 settings?

  - by Arek

  How can I backup all settings of free VMWare ESXi 4? I configured the host - VMs, Storage, Networking, Resource Allocation and all other settings available in vSphere Client. It consumed quite a lot of time, but works pretty well. Now I want to backup all the settings "just in case" to easily reinstall ESXi 4 if something goes really wrong. I don't ask "how to backup VMs" (so please don't point me to Ghetto-VCB script). I need to backup and restore just ESXi4 host's settings.

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• Disabling at application level a nic (network interface) on Windows

  - by Leandro

  How can I disable at application level a network interface? The main question is this: If I disable the nic trough wmic (win7) or devcon (XP), the "plug and play" of a wired nic doesn't work any more. For example, if the user put the cable on a disabled nic, the OS doesn't know about it. So I need to persist the enable condition but disabling the networking like a disable nic. There's some API, network configuration (routing, changing ip, changing gateway, any), .NET Framework resource (Only NetFramework 2.0) or do you can think in any workaround to do this? Suggest and ideas also will be treated as a solution. Thanks and kind regards.

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• Is it possible to rate-limit an scp/sftp/rsync transfer from the command-line? ie, manual QoS on a s

  - by warren

  Specifically, I am looking to rate-limit an scp or sftp session in the call itself. For example, let's say I want to copy 100MB to one server, and 1GB to another. I'd like to be able to run both of these at the same time, but maintain a QoS for "normal" computer usage - somewhat similar to how you can rate-limit bittorrent. Is there a way to do this without touching the networking hardware? I'm envisioning something akin to: magic-qos-tool 'scp file user@host:/path/to/file' Or.. scp -rate 40kbps file user@host:/path/to/file

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• Is a matching entry in /etc/hosts required for hostname?

  - by JohnWoltman

  I was installing a Tomcat webapp that refused to work until I stumbled on someone else's issue with an unrelated product. The solution was to add the machine's name to /etc/hosts, to match the name returned by hostname. Is this required for general Linux networking to function correctly? My webapp is running in a virtual machine so that I can test the webapp, and I don't normally bother with the /etc/hosts file on VMs. I just shook my fist and cursed Tomcat and webapp's behavior. I read http://serverfault.com/questions/118823, but that doesn't say if it's required or not.

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• EC2-like virtualisation platform with non-RDP access

  - by code'

  I'm looking into setting up a few small VMs. The trouble is the software I intend to install on them (Cisco VPN Client) blocks out networking (other than to the target VPN destination...) with no workaround. This means that Remote Desktop or other methods of connecting to VMs that go via the Internet (e.g. GoToMyPC, LogMeIn) are a non-starter. What I'm really looking for is an EC2-like platform but which gives direct access to the VM through (for example) Hyper-V Manager. Sadly the only way they all seem to offer to remote control the VMs is direct access via Remote Desktop, whereas I need to be one layer above that (if that makes sense). A viable alternative would be to run virtualisation software within a Windows EC2 instance; obviously hardware virtualisation is impossible but I wonder if there are any software virtualisation platforms that could be run and that would work. Does anyone know if something like this exists/is possible? Thanks! C

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• Cannot login to XP SP3 in VMWarePlayer virtual machine in safe mode

  - by Alper

  Hello, Here is my setup Host OS: XP SP3 Guest OS: XP SP3 (using VMWare) I checked the /SAFEBOOT option in System Config utility in guest for troubleshooting. Now the guest OS boots up in Safe Mode but I cannot login with my user id/password. Here is what I tried: [domainName]\[userid] for user name = Login Fails Administrator with blank password = Login fails Safe Mode with Networking = Login fails Safe Mode with Command Prompt = Login fails Last Known Good Configuration = starts in safe mode, login fails Start Windows Normally = starts in safe mode, login fails Don't have cd to get to the recovery console Any ideas?

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• AWS RDS Timeout

  - by warder57

  I know next to nothing about networking/servers. So I'm assuming I'm missing something obvious. All of the resources I can find on this, either don't work or are outdated. I created a brand new AWS account on the free plan. I created a postgres RDS DB instance. I made sure that this RDS instance is set to publicly accessible. This RDS instance has the default VPC/Security Group settings. In order to connect to this DB from my local machine, I used pgadmin3 and followed the instructions provided on the AWS documentation page. Seen here: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ConnectToPostgreSQLInstance.html I've double checked all of the information required to connect: Host: whatever.whatever.us-west-2.rds.amazonaws.com Port: 5432 Username: USERNAME Password: PASSWORD When I try to connect to the database, my connection fails due to a timeout. (During step 4 in the above guide.) Can anyone point me to whatever I am missing? Thanks in advance

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• HTTP traffic through PIX VPN from outside site

  - by fwrawx

  I have a remote site with a website that only allows access from the outside IP assigned to our local PIX. I have users connecting to the local networking using a VPN that need to be able to view this remote site. I don't think this works because the packets want to come in and go out over the same (ext) interface. So I'm looking for a way to make this work using the PIX or setting up a service on a server on the local network to act as a middle-man for the HTTP requests. The remote site doesn't support setting up a VPN to our PIX. The remote website is dishing out pages over a non-standard port. Can I use squid or something similar to proxy just one site?

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• Group policy to disable notifications of particular errors?

  - by resolver101

  How do i disable the notifications of particular errors? A little background to my issue. During the installation of the Kaspersky, it disables all the windows firewall for all except the domain. I have remedied this by creating an offline policy in Kaspersky which enables the Kaspersky firewall when out of the office (ie not connected to the office network). The problem now is that users in the office now see a notification showing that the firewall is disabled even though it’s enabled in all scenarios. It’s just that work and home show as disabled when the clients are connected to the office LAN. I’ve looked into the notifications and you can disable the notification (not recommended) but I don’t want to do this incase other relevant messages are stopped from being displayed. http://blogs.technet.com/b/networking/archive/2010/12/16/disabling-firewall-alerts-in-the-action-center.aspx

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• Can I increase the link speed of the RAS Server on our MS Win2k3 box?

  - by Ducain

  We are running a Win2K3 Server box, and I'm a remote employee that connects via VPN. I've been frustrated for some time by the connection speed over the VPN (the office HQ has a decent speed and I have a biz class connection here), and decided to do some checking today. This morning, I was dialed in and looked at the networking tab of the task manager, and I see that the adapter for the RAS Server (the box has 4 Gigabit adapters) has a speed that seems far too low. The speed for the RAS Server link hovers between 300 - 600 Kbps. The local connection (and others) all say 1 Gbps. Can I set this to a higher speed? Is this information accurate? Thanks for the input.

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• LinkSys WRT54GL + AM200 in half-bridge mode - UK setup guide recommendations?

  - by Peter Mounce

  Crossposted from here I am basically looking for a good guide on how to set up my home network with this set of hardware. I need: Dynamic DNS Firewall + port-forwarding VPN Wake-on-LAN from outside firewall VOIP would be nice QoS would be nice (make torrents take lower priority to other services when those other services are happening) DHCP Wireless + WPA2 security Ability to play multiplayer computer games I am not a networking or computing neophyte, but the last time I messed with network gear was a few years ago, so am needing to dust off knowledge I kinda half have. I have read that I should be wanting to set up the AM200 in half-bridge mode, so that the WRT54GL gets the WAN IP - this sounds like a good idea, but I'd still like to be advised. I have read that the dd-wrt firmware will meet my needs (though I gather I'll need the vpn-specific build, which appears to preclude supporting VOIP), but I'm not wedded to using it. I live in the UK and my ISP supplies me with: a block of 8 static IPs, of which 5 are usable to me a PPPoA ADSL2+ connection

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• Make 2 virtual machines ping in virtual box

  - by darkheir

  I'm trying to make 2 virtual machines communicate in Virtual Box, but whitout any success. Here are the step I have done: I setted both VMs in Internal networking mode (using VBoxManage modifyvm "VM name" --nic<x> intnet) I setted the DHCP server that is built into VirtualBox to manage IP addresses :VBoxManage dhcpserver add --netname intnet --ip 10.13.13.100 --netmask 255.255.255.0 --lowerip 10.13.13.101 --upperip 10.13.13.254 --enable But then both of the VM have the same IP Adresse (10.13.13.101) and even if set the IP manually, the Virtual Machines are not pinging each other.

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• Setting a Static IP Running FreeBSD8 in VirtualBox hosted on Windows 7

  - by gvkv

  I'm using VirtualBox on Windows 7 (host) to run a FreeBSD (guest) based web server. I`ve assigned a static ip of 192.168.80. 1 to the (virtualized) NIC which is run in bridged mode. The problem is that when I ping an external server (such as google.com) I get a No route to host error: dimetro# ping google.com PING google.com (66.249.90.104): 56 data bytes ping: sendto: No route to host ... I can ping the BSD server from both another virtualized machine and my host machine and from the server, I can ping everything on the network. The router ip is 192.168.1.1/16. ADDENDUM: I have the following lines in /etc/rc.conf on the BSD VM to configure networking: defaultrouter="192.168.1.1" ifconfig_em0="inet 192.168.80.1 netmask 255.255.0.0"

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• Sharing VPN from XP to Linux virtual

  - by user55513

  Hi I will keep the question simple with few details, if more is needed tell me. Thanks. I am playing around with networking and virtualbox. So I have 2 virtual machines. One is windows xp and another has linux in it. Windows XP has 2 network cards. One for the internet and the other to connect to the linux computer. Linux has one 1 card and it can only access the internet passing through Windows XP. Internet works fine until I activate OpenVPN on Windows. When I turn on VPN, Linux has no access to it. How can I make linux use VPN too? I believe it has something to do with using the "route" command on XP to send VPN traffic to Linux but I was not able to figure it out how yet.

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• Why is the network speed on my Mac Pro (early 2009) so slow?

  - by Rafael

  I have a really weird networking issue on my Mac Pro (Early 2009). I can’t get higher network speeds than about 2MBit/s. It doesn’t matter if this is over AirPort or one of the Ethernet ports. An iMac and a Mac mini in the same network with almost the same configuration get about 25-30 MBit/s. I’ve read a couple of things about this on the official Apple forums, but there is no helpful information. Anyone else with Mac Pro network speed issues and who knows how to solve them?

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• How would you diagnose an integrated network card that doesn't show up on the device list?

  - by Tomer Gabel

  I've been setting up a server based around a Gigabyte GA-G33M-DS2R motherboard (G33, PCH9R with integrated Realtek 811B network device. I've enabled it in the BIOS, but it doesn't show up in the pre-boot PCI device list, isn't recognized by Windows (even after installing the chipset and networking drivers) and doesn't even show up via lspci. I've tried cycling power, disabling, cycling again, enabling, cycling again etc. to no avail. I'm sort of at a loss at this point; the board isn't under warranty anymore, but I'd rather not have to replace it. Any advice would be greatly appreciated...

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• Secure copying (file transfer) between two Linux servers in the same datacenter (Linode)

  - by MountainX

  I have two Linodes in the same data center. I want to copy files from one to the other each night or on demand (for about the next month, until this project is finished). So I'm thinking about using rsync. My question is how do I set up the two Linode servers to communicate via private IP addresses securely? Both servers are SSH hardened, they use denyhosts and have a fairly restrictive iptables setup. I know I need to first assign private IP addresses to each server, then configure static networking according to this guide. What is next? What SSH or iptables settings are needed to allow these two servers to communicate? What further info do I need to supply in this question? I'm looking for a basic step-by-step guide for how to do this.

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• Apache does not serve non-locally

  - by yodaj007

  I have a freshly installed instance of Fedora Core 16 inside VirtualBox using bridged networking. On it, as root I typed in: yum -y install httpd service httpd start ifconfig Inside the VM, I can open a web browser to 'localhost' and I get the Apache test page. It works. But in Windows (the machine hosting the VM), I point my browser to the IP address returned by ifconfig (192.168.2.122). The connection times out. I can go to a command prompt and ping the VM. Is there a firewall or something that comes with Fedora by default? Or is there something I need to change in a config file?

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• FoxPro 2.6 DOS on Windows 7 64-bit

  - by Rolando

  I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: downgrade 64-bit Windows to 32-bit, or run the app on a virtualized 32-bit XP

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• Setting up Debian squirrelmail

  - by Muazam

  I'm new to networking. I need to set up a email server and I also need to create an email address. ex. [email protected] I've installed squirrelmail and dovecot. http://www.mydomain.com/squirrelmail/src/login.php Shows a log in screen, but when I try to log in I get this error: Error connecting to IMAP server: 127.0.0.1. 111 : Connection refused I have no experience with squirrelmail and dovecote. Anyone can help me out, I really appreciate it. Thanks!

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• Nagios: Which services should I monitor on different roles of servers?

  - by Itai Ganot

  I've started working in a new workplace and my first task is to build a Nagios server and configure it to monitor the servers in the network. Since I'm starting from scratch I wanted to hear from you, experienced users, which checks should I configure for each role? For example, there are some basic checks which I run on each Linux machine I monitor: SSH, Ping, Load, Current Users, Swap Usage, etc... Now my question is, which specific checks should I run for a DataBase server, for a Networking Switch, for Httpd servers? (I currently monitor how many httpd processes are running) Thanks in advance

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• No Internet for Created VLan on Cisco CE500

  - by Jennifer

  I'm new here and also with networking but i can't set internet conection for some vlan created. I have a Cisco CE500 switch and created 4 vlans define by the roles in the switch. Vlan 2: Servers (role) (port 3-4) Vlan 3: Desktop (role) (port 5-8) Vlan 4: Guest (role) (port 9-12) Vlan 1 is default, Connect to the ADSL Modem/Router Port 2 assign to the Router Role (vlan 1) The switch is connected on port2 the ADSL Modem (DHCP) 192.168.2.254 The goal is: All Vlan should have internet connection. Vlan 2 and 3 should see each other but not Vlan 4 I can enter the switch CLI but dont know which command to enter. Thanks 4 ur time and replies Jennifer

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• Connect macbook to my LAN through a VPN - best solution?

  - by LewisMc

  So I have a LAN connected via a ADSL/PPPoA, this is using a bog-standard DLink router supplied by my ISP (talktalk UK). I have a NAS within the LAN that is running FreeNAS and I want to be able to connect to it when I'm out and about. It's running an atom so it's quite low on juice consumption but I don't want to have it on all day and night so I've been waking it via a magic packet and booting it down from the web admin when I need it. So I want to connect to the LAN, I presume via a VPN, to be able to send a magic packet. But what is the best method to accomplish this, or is there an easier way? I've been looking at the cisco 857 integrated router and the Netgear prosafe 318(behind modem) but not sure If I'm on the right track with what I want to achieve as I've not much experience or knowledge with VPN's or networking (software engineering student). I have tried port forwarding but to no avail, either with magic packets or even connecting outside the LAN via DYNDNS. Thanks,

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• VMware 1.0.1 Windows7 - Ubuntu hostnames

  - by Kyle K

  I'm trying to run Ubuntu as the guest OS using VMWware 1.0.10 with Windows 7 Ultimate as the host OS. I had this set up previously with Win XP as the host OS and in fact I'm using the same .vmx My problem is I can't get either Win7 or Ubuntu to be able to ping the other by hostname. After installing Samba and Winbind on Ubuntu, I was able to get this working when under WinXP, but for some reason I can't get it to work under Win7. I can ping by IP Address, and the guest OS even shows up by hostname under the Windows networking panel (but of course I can't do anything with it), but pinging using short hostnames just won't work. Also, Win7 firewall is turned off completely.

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• setting up bridged adapter for VPN server

  - by B. VB.

  I have an Ubuntu linux Linode server that I am trying to install OpenVPN on. I'm following the tutorials (which, it turns out, are quite incomplete). auto br0 iface br0 inet static address 192.168.0.10 network 192.168.0.0 netmask 255.255.255.0 broadcast 192.168.0.255 gateway 192.168.0.1 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off When I add this chunk in my /etc/network/interfaces, and I restart networking, my eth0 interface does not have an IP and I cannot get on the network (I need to use a buggy, slow, and annoying AJAX term to do damage repair). Why does adding this screw everything up? Any tips on how to set up this bridged adapter?? Thanks in advance!

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