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  • Set up layer 2 vlan between 2 data centres

    - by user41679
    Hello, Our data centre provider operates 2 sites, and we currently have equipment in one and would like to have equipment in the second. They've told me that they operate a layer 2 vlan between the 2 sites over a 20gbit connection, and that they'd just give me ethernet cable at each end to connect the locations. At the current site, we have Cisco 2960 48TC-L switches, all the machines are on a 192.168.x.x subnet and we have cisco firewalls with which we connect to our internet provider with. My question is what would I need to do to connect the 2 sites? could I just plug the ethernet cables the provide into the cisco switches, and have the same switches the other end? would I need to set up a separate internal network on the other side and connect both through the firewalls? Would the cisco switches need special configuration? We expect to maintain a number of connections between the 2 sites, and each site would have its own internal dns name like dc1.xx.com. Sorry if I'm being vague or haven't included enough information, I've a fairly good knowledge of hardware but we're down a netops guy at the moment and I'd like to get both sites on-line ASAP! Thanks in advance!

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  • Internet Pings but Does Not Load

    - by t3techcom18
    From what I've been seeing and been doing my research for the past two days, many people have been having the same issues throughout the years, however, this is the first time I've encountered this issue and many of the specific workarounds or fixes have not worked for me. I've been trying to work through this for 24 hours straight now, but to no avail so many thanks to those that can help. On Monday night, got home from work; surfing the internet for half an hour, everything was fine as always. Just after half an hour, my Internet got very sluggish and then it died completely. I thought it might have been the an update I just put through in terms of Windows Update that said was a critical update for MSE, as the same thing happened a few years ago. I did a System Restore to two different dates that were in the past two weeks, nothing. Uninstalled MSE and disabled Windows Defender and the Windows Firewall: Nothing. Reset IE Options, Reset Winsock, Dumping DNS, many of the other command prompt screens to reset items: Nothing. Reset the modem: Nothing. What DID work, however, was a ping test to Yahoo. The ping test worked, saying all four packets was recieved, yet nothing else popped up. LAN and CenturyLink said everything worked on their end and that everything was connected properly, as well as the speeds working fine. CenturyLink said in their notes that they thought Port 80 was blocked. I went and put in the Firewall to allow Port 80 but it didn't make any difference whatsoever. I remembered I had a spare modem laying around and I switched them up, both modem and the cords - nothing. I then hooked it up to my netbook to see if that would work, as it usually does - connection didn't work there either. Like I said, it's been about 24 hours now and this is increasingly frustrating, as I've tried all solutions (While browsing through 10 search results pages on my phone) suggested and still nothing. Any suggestions and tricks would be greatly appreciated! Here's my specs: Windows 7 32-bit Home Premium Intel Core 2 Duo 3.14 Ghz 4 GB Kingston DDR2 RAM eVGA nForce 750i SLI eVGA GeForce GTX 560 Ti FPB ISP: CenturyLink No router Modem: CenturyLink 660 Series Hardwired connection PLEASE NOTE: This is the only computer I have (Like I said, the netbook solution didn't work), so downloading programs and such is not an option til I get to other computers somewhere else, like right now. Unless someone knows of a way of copying/pasting a file in Windows and then transferring said info to an Android smartphone, this is gunna take a while haha. Patience is requested.

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  • Windows 7 computer apparently connected to working wireless network but can't access router page or internet

    - by Hemmer
    I can consistently connect successfully to both the router and the internet using both my phone and two different computers which strongly suggests that the issue is at the desktop end. Only my Windows 7 desktop machine has stopped getting internet connectivity. It manages to connect to the router's network using the Windows 7 wireless dialog, but can't access either the router configuration page (192.168.1.1) or the internet in general once connected. The strange thing is the wireless network icon in the notification bar shows a full strength signal, sometimes with the yellow warning triangle. The output of ipconfig /all is: Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-12-17-94-98-90 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.102(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 08 June 2011 10:32:16 Lease Expires . . . . . . . . . . : 08 June 2011 12:32:16 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 NetBIOS over Tcpip. . . . . . . . : Enabled I've tried renewing DCHP settings disabling IPv6 resetting TCP stack uninstalling and reinstalling WLAN card drivers I've not installed anything new or made any changes to my knowledge, this just happened out of the blue. The only possible change is my friend connected his macbook to the network, but that has gone now and shouldn't have any lasting effects? TCP/IPv4 is set to automatically find an IP address. Antivirus is MSE (up to date) and doesn't detect anything unusual. Any ideas where to go next? Any help is greatly appreciated. For reference, the results of ipconfig /all on one of the working computers is: Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-16-CF-67-E5-97 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.1.100 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 Lease Obtained. . . . . . . . . . : 08 June 2011 10:26:38 Lease Expires . . . . . . . . . . : 08 June 2011 12:26:38 UPDATE: Still not working, but I've managed to find a temporary workaround by tethering my Android phone, effectively becoming a new wifi adapter. Will be moving to a new flat so will test if it is a network specific thing - maybe the card has got damaged somehow? Also will see if the card is working with Linux soon.

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  • I dont understand why [closed]

    - by gcc
    I dont understand why they vote down my question ,I couldont understand them -they do know nothing ,donot try to solve it-but they do vote down.If you do know nothing , dont fuck something or dont try to mess up

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  • Installing packetfence

    - by BrNathan
    I asked in the Ubuntu area, but thought I would get a better answer here. Was anyone able to install packetfence on Ubuntu 10? I tried a tutorial, but didn't have any luck. Some of the services installed and are working apache with php, snort, pfdetect, and pfdhcplistener. I can even get info with pfcmd node view all, but for the life of me I can't get it to work with apache2. When I run pfcmd service pf start I also get an error uninitialized value $_[7] in join at /usr/local/pf/lib/pf/class.pm line 170

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  • Ubuntu 10.10 and packetfence

    - by BrNathan
    I asked in the Ubuntu area, but thought I would get a better answer here. Was anyone able to install packetfence on Ubuntu 10? I tried a tutorial, but didn't have any luck. Some of the services installed and are working apache with php, snort, pfdetect, and pfdhcplistener. I can even get info with pfcmd node view all, but for the life of me I can't get it to work with apache2. When I run pfcmd service pf start I also get an error uninitialized value $_[7] in join at /usr/local/pf/lib/pf/class.pm line 170

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  • list and explanations of ways to boost this router's signal strength? [closed]

    - by barlop
    Possible Duplicates: Improve Wireless Signal How to get wireless coverage over my whole house? What's the best way to increase the range of my 802.11g router? The back of my house doesn't have WiFi Signal I'm interested in ways that are both specific to certain routers, and generic. When I say generic, I don't necessarily mean a one way that works for many.. but it can also be a generic answer, so mentioning solutions for different situations. So not just the one router I mention. Explanations are important, as well as all the ways. One i'm particularly interested in boosting the strength of is this wireless router/modem Netgear VMDG280 maybe anywhere in a big house with three floors, maybe from the garden.

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  • Can you explain how to understand what the 'iwconfig' command displays in Ubuntu-9.04?

    - by Shawn
    I'm having trouble making my wireless connection work, and I realized I don't really know how to use the tools I have, in this case, the iwconfig command in Ubuntu-9.04. Here is what I get: ***iwconfig*** - lo no wireless extensions. eth0 no wireless extensions. wmaster0 no wireless extensions. wlan0 IEEE 802.11bgn ESSID:"Network" Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated Tx-Power=20 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Power Management:off Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 vboxnet0 no wireless extensions. pan0 no wireless extensions. "Network" is the name of my wireless network, btw. But what does this all mean? How can this information help me aquire a working wireless connection? When I try associating a key using sudo iwconfig wlan0 key s:my_key I get the following error message: Error for wireless request "Set Encode" (8B2A) : SET failed on device wlan0 ; Invalid argument. I do have the right key though, so what's the problem?

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  • IIS7.5 website (mostly) inaccessible from the outside world

    - by Force Flow
    On the network firewall, I opened up port 80 and forwarded it to the Windows Server 2008 R2 running IIS 7.5. Port 80 is open in the Windows firewall. On the LAN, the website is accessible without any trouble. When accessed from the outside, I can access it only 3 times every few hours before access to it cuts out from the outside. There aren't any access limits in IIS or the network's firewall as far as I can tell. IIS is running PHP 5.3. The default website has been deleted. The bindings for the website's domain are set for mydomain.com *:80 and mydomain.com 192.168.0.3:80

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  • Connection reset to some websites

    - by user143271
    I'm using a 2wire 3600HGV modem/router. Starting around this afternoon, any time I try to access anything from i.imgur.com I get The connection to i.imgur.com was interrupted in chrome, and the actual error is Error 101 (net::ERR_CONNECTION_RESET). It's network wide (tested multiple browsers on multiple computers and phones). I can access imgur.com just fine, but nothing from its content server i.imgur.com. If I disable wifi on my phone and use its 4G connection, I can access it just fine, so obviously imgur isn't down. I haven't changed any configuration on the router, and I have tried changing DNS servers (I tried google and OpenDNS). It also seems that imgur is not the only site; howtogeek and a couple of others seem to have the same problem. It looks like they are all edgecast cdn content servers, but not all edgecast cdn servers fail. Tumblr, for instance, works just fine. Does anyone have any idea what would be causing this? EDIT: Related to the edgecast remark, it would appear that this is a specific edgecast server: gs1.wpc.edgecastcdn.net. Tumbler's content is on gs1.wac.edgecastcdn.net, so it might be on a different server. Edit #2: These sites all respond to ping just fine as well.

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  • How to turn a DSL wireless modem to a wifi hub

    - by my_question
    I used to use DSL for my home internet and used Qwest Q1000 wireless modem. Now I switched to cable and use wireless router to cover the home. One problem is I just bought a desktop and I like to put it in a place far away from the router. The desktop only has cable interface, it does not receive wifi. The obvious solution is I go buy that little USB dongle which can receive wifi and plug it to the desktop. But before doig that, I am wondering if somehow I can re-use the Q1000 modem. The modem has 4 LAN ports and it has wifi antenna. I tried connecting the desktop to Q1000's LAN port, the system shows wire connection is in place, but I cannot access internet. It seems to me Q1000's wifi function is to broadcast the wifi signal out instead of receiving signal. I went to the Q1000 configuration page by going to web page of "192.168.0.1", it is not clear how to set it up. I also wonder one thing, my home wifi is encrypted, so if I want to let Q1000 to join the wifi, I need to somehow type in the password, I am not sure how to do that either. Anyway, maybe this thing cannot be used in this fashion. If you have any suggestion, please shed some light. Thanks.

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  • Is it possible to host a website with Apache HTTP through a ZyXEL EQ-660R modem and a Netgear WGT624v3 wireless router?

    - by Vortico
    Essentially, I have a spare desktop computer I'd like to turn into a web server, but my modem and wireless router are very difficult to work with. I installed Apache HTTP and successfully hosted a test page which can be accessed anywhere on the LAN. However, I'm having trouble setting up the server to be accessed from my external IP address. I was supplied with a ZyXEL EQ-660R DSL modem by my ISP (CenturyLink) and bought a Netgear WGT624v3 wireless router in which to connect my laptop and spare desktop. ZyXEL's website is no help, and I don't think much of the problem is with the Netgear router. I've played with many settings and have tried to forward port 80 from the modem, but I've had no luck. Could someone direct me toward a solution or recommendations for more promising hardware? Or should I admit defeat and explore other hobbies? :)

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  • Mac has IP address, can connect to router but can't connect outside

    - by partition
    Weird problem, my MacBook can't connect anywhere right now! The router works, it gets an IP, it can log into to the router but it can't resolve anything! The router works as I connected another device to it and it connected to the net. The MacBook doesn't have any strange DNS configurations either, just 192.168.1.1 for the router I even tried tethering it to my phone, and it still would not connect to the net... help?

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  • How does communication between 2 computers in a single network happen?

    - by learner
    Lets say I and my friend connect our computers with a LAN cable. I ping my friend with his IP address. How does it work? Since we are in the same network, we don't even need IP addresses, do we? Isn't IP addressing only relevant in case of inter-network communication? What will the ping command do with his IP address? How will it eventually find his physical address (NIC address)? (no ARP here, because that would involve a router at the edge of the network, which doesn't apply here). Am I wrong somewhere?

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  • Static IP on Wi-Fi at work and dynamic at home?

    - by Jason Shultz
    I need the laptops at my office to have a static IP for security purposes and identification. However, some employees take their laptops home in the evening. If I have the Wi-Fi configuration set to use a static IP, how can they have a dynamic IP at home? The laptops are using Windows Vista and Windows 7.

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  • peer to peer disk image transmission

    - by JackWu
    Installing linux/windows through pxe works smoothly for me. But downloading images(especially windows) is a headache. Let alone the time, bandwith usage is horrible. And p2p tech comes to my mind. But I have no clue how it works or where to start. Anyone knows how to setup p2p local network, and applies that on image transmission? Any advice, tutorials or experiences will be great. Thanks in advance.

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  • How to remove permanent map of a network drive on OS X Lion?

    - by Flijfi
    Some time ago I mapped a network drive on my Snow Leopard Mac, which was upgraded to Lion. The network drive is not active any more and I receive popups all the time with the error: There was a problem connecting to the server XXXX. I have no idea how I configured at the time. I may have included a mount command, in a config file but I don't know any more where I did it. I reviewed the Preferences/Account/Login items and there is no permanent mapping there. OSX is updated as Nov 27,2011 and the issue is not related to the upgrade to Lion itself but to a misconfiguration. Any help will be greatly appreciated. (If you have the opposite problem, here is the link to solve it: Permanently map a network drive on Mac OS X Leopard)

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  • Backup/Multihomed network connection

    - by J_P
    We have a couple locations that require 24/7 access to Internet and our current provider (AT&T) while mostly good is not always up. My concern would be if I go with another provider (for example Comcast) I'm going to be subject to the same down time if it's in the "last mile". I for the most part don't know where the failure points are on the ISP side but I would imagine the large majority are within the last mile. I'd looked at Mifi or similar solution but have concerns about bandwidth caps and overall speed. Any suggestions would be appreciated.

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  • Cisco ASA Multiple Public IP

    - by KGDI
    I have a Cisco ASA5510 and articles related to ASA and mulitple Public IP says this cant be done. My question is how to best solve a scenario like this: I have 3 zones, Outside, Inside and DMZ Outside is Internet Inside is Client machines DMZ is a zone for servers related to external and internal services. My scenario is a bit more complex, but to keep things simple this will do: I want to place an Exchange server and a web server (externally reachable in the DMZ zone) The webserver uses both TCP80/443, the Exchange server uses 443 So to the problem: With the ASA only having one public IP, how would you make a DNAT to port 443 on both the internal hosts behind 1 Public IP? Usually, when i do this kind of scenario With Linux boxes i use alias Interfaces like eth0:0, eth0:1 and set 1 Public IP on each. To me this must be a pretty common scenario, any ideas on how to solve it With ASA? /KGDI

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  • ftp-client works fine. ftp-tls-client fails on one computer and works on another

    - by ispiro
    Connecting to ftp - from a Windows Server 2012 - it works both secure (-over tls) and unsecure. From a Windows 7 it succeeds unsecure but fails when secure. (Using explicit TLS and passive mode.) filezilla: 234 AUTH command ok. Expecting TLS Negotiation. Initializing TLS... Connection timed out I've tried many things but nothing helps. (I'm also trying this programmatically. For details see: http://stackoverflow.com/questions/25393716/ftp-ssl-fails-after-expecting-tls-negotiation ) The fact that it does succeed from one computer proves that the ftp server is fine. And the fact that the Windows 7 computer succeeds without tls proves that it's not a NAT/firewall problem (besides, it failed even after disabling firewall etc.). I'm not sure where to start looking. Perhaps a difference between PC Windows and Windows Server? EDIT The ftp server is on a Windows Server 2012.

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  • Need reasonably priced router with QoS support [closed]

    - by ULTRA_POROV
    I dont need wireless. I am expecting very heavy traffic, with possibly thousands of tcp connections open at one time. This would require that the router has good hardware. I also need to limit the different services i will provide. Lets say i need to guarantee 60% of all the bandwidth to HTTP, 10% FTP, and 10% for Mail... So the router software must have flexible QoS options as well. I don't know which one to chooose, because this information is usually not given on the router specs.

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  • Howto setup a `veth` virtual network

    - by Reinder
    I'd like to setup three virtual network interfaces (veth) which can communicate with each other. To simulate a three node cluster, each program then binds to one veth interface. I'd like to do it without LXC if possible. I tried using: Created three veth pairs: sudo ip link add type veth Created a bridge sudo brctl addbr br0 Added one of each pair to the bridge: sudo brctl addif br0 veth1 sudo brctl addif br0 veth3 sudo brctl addif br0 veth5 Configured the interfaces: sudo ifconfig veth0 10.0.0.201 netmask 255.255.255.0 up sudo ifconfig veth2 10.0.0.202 netmask 255.255.255.0 up sudo ifconfig veth4 10.0.0.203 netmask 255.255.255.0 up Then I verified if is works using: ping -I veth0 10.0.0.202 but it doesn't :( The I added IP addresses to the veth1,veth3,veth5 and br0 interfaces in the 10.0.1.x/24 range. But that doesn't help. Any ideas? or a guide, all I find in how to use it with LXC. Or am I trying something that isn't possible?

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  • What IP's should the servers be assigned?

    - by user273284
    I have got 4 subnets (calculated using online calculators) The major network is: 172.16.0.0/16 The students subnet having the highest IP requirement /22 mask gets 172.16.0.1 - 172.16.3.254 as assignable IP's Staff subnet /23 mask gets 172.16.4.1 - 172.16.5.254 as assignable IP's Management subnet /27 mask gets 172.16.6.1 - 172.16.6.30 as assignable IP's Servers subnet /27 mask gets 172.16.6.33 - 172.16.6.62 as assignable IP's Should I follow this IP addressing scheme or should the servers get the first 30 IP's of the network i.e. 172.16.0.1 - 172.16.0.31 ? What is the best practice?

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  • Internet connection fails in Ubuntu on VirtualBox when virtual machine is created from "Import appli

    - by Sanoj
    I have installed Ubuntu Server 9.10 in a virtual machine in VirtualBox, then I made a cope/clone and exported it with "Export appliance" so I can create many cloned virtual machines. But when I try to import an appliance, everthing seams to be fine with the Ubuntu except that it can't connect to Internet and doesn't get an IP-address. The machine is used in Bridged mode. And it doesn't help to change to NAT-mode either. The machine that I cloned seams to work fine, and get an IP address. How to fix this? Where am I doing wrong?

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  • Windows/global setting to allow only SSL when on public Wifi?

    - by hungry
    Rather than going through each of my apps and modifying settings, or tweaking individual browser settings (I use three different browsers) or just being careful not to type non-SSL URLs into the web address bar, is there a solution at the Windows level that will prevent anything from connecting to the web from my laptop unless it's using SSL? I also have mini apps installed like Gmail checker, etc that connect to the web of their own volition using my usernames, passwords and such, so it goes beyond just web browsers. The reason I'm asking is I want to work securely on the general Internet when on public Wifi (e.g. coffee shops) without a lot of hassle or having to remember everything that needs to be locked down. When I'm back home I want to go back to full access mode using any kind of protocol on the web. If a website doesn't support SSL when I'm out in public then I just don't surf it - that's not a worry to me.

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