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  • Windows 7 tasks don't switch when clicking window

    - by Jonathan Weinraub
    I got a peculiar problem with an enduser today. He says for the past month or so, if he has a window open (not maximised) and he clicks the window below it (also not maximised), it won't switch to it. For example, if he is in Lotus Notes, and wants to go back to Firefox, and he clicks the Firefox title bar, the tasks don't change focus/switch to it. This doesn't happen for applications. Usually it is with Firefox but if he's in Matlab and goes to PADS for example, they switch fine. If you close the apps, and reopen them, it'll work, but about 30 minutes later the weirdness then resumes. Any insight would be greatly appreciated. Thanks!

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  • Switch to switch encryption over a wireless bridge (TrustSec?)

    - by metatheorem
    I am planning to connect an existing Cisco 3750 switch to a 3560C switch over a wireless PTP bridge. The bridge will be WPA2 protected, but I am looking for an additional measure of security between the switches to prevent other wireless access through either switch. They do not support IPSec, only 802.1Q tunnels, and buying additional hardware is not likely an option. I am looking into using TrustSec manual mode between the switches. After some effort reading into TrustSec and MACsec, I am mostly certain this is a good choice over the wireless bridge, keeping in mind it is a shared medium. Two questions: Can I reliably prevent other wireless traffic from accessing the switches using TrustSec? Does anyone know of any better options with the 3000 series switches?

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  • Destination host unreachable

    - by user1010101
    I have 2 router connected to 1 switch which contains two vlans, 1 router has the ip table of vlan1 and the other router have the ip table of vlan2 I have trunked both router cable to the switch. I have set 1 ip table per router which correspond to the ip address of the PC that have this router address as a gateway. When I ping from 192.168.100.2 to 192.168.200.2 it tells me that destination host is unreachable and the message is from the router 192.168.100.1. So I guess router for 192.168.100.x does not see the router for 192.168.200.x , right ? Or am I wrong ? What are good troubleshooting steps ? http://i.imgur.com/b94Ir.png is the representation of the network, i cannot post image since im not reputated enough.

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  • gcov and switch statements

    - by Matt
    I'm running gcov over some C code with a switch statement. I've written test cases to cover every possible path through that switch statement, but it still reports a branch in the switch statement as not taken and less than 100% on the "Taken at least once" stat. Here's some sample code to demonstrate: #include "stdio.h" void foo(int i) { switch(i) { case 1:printf("a\n");break; case 2:printf("b\n");break; case 3:printf("c\n");break; default: printf("other\n"); } } int main() { int i; for(i=0;i<4;++i) foo(i); return 0; } I built with "gcc temp.c -fprofile-arcs -ftest-coverage", ran "a", then did "gcov -b -c temp.c". The output indicates eight branches on the switch and one (branch 6) not taken. What are all those branches and how do I get 100% coverage?

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  • Ierrs on Network Interface - Pfsense/Freebsd

    - by JFA
    Hello all, We're using PfSense as an internal router/firewall (no connection to WAN). Using the Web-GUI, under Status --- Interfaces, there's one particular interface where I have some errors: In/out errors 3513/0 I then SSHed to the firewall to validate the info provided by the WebGUI and here's the output: # netstat -ni -I bce2 Name Mtu Network Address Ipkts Ierrs Opkt Oerrs Coll bce2 1500 <Link#3> 00:23:7d:cd:a2:a2 1404522323 3513 749797131 0 0 bce2 1500 10.42.1.0/24 10.42.1.24 6 - 6 - - As you can see, both present the same info (errors on incoming packets). I switched cables, changed network card, changed port on switch and I still see the errors. My 2 questions really are: 1) Is there any way I could get more info on the nature of these errors? or is this all I can get? 2) Should I be worried about this? As you can see, the errors are a VERY LOW percentage of all the total incoming packets. In other words, is this normal on a high-traffic gigabit interface? Thanks! JFA

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  • Not getting gigbit from a gigabit link?

    - by marcusw
    I just upgraded my LAN to gigabit. This is what netperf has to say about things. Before: marcus@lt:~$ netperf -H 192.168.1.1 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.1 (192.168.1.1) port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.02 94.13 After: marcus@lt:~$ netperf -H 192.168.1.1 TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.1 (192.168.1.1) port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec 87380 16384 16384 10.01 339.15 Only 340 Mbps? What's up with that? Background info: I'm connecting through a gigabit switch to a sheevaplug. I have Cat5e wiring in the walls and the run is maybe 30 feet. If you're not familiar with netperf, it has a tendency to give very stable results and never lie.

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  • Why does a wired network slow down with user increase?

    - by Ed Briscoe
    If you had a wired network, 20 PCs hooked up to a 100 Mbit/sec switch (same onboard ethernet port speed) and you were just sending some test data round. What is the technical explanation as to why 20 machines sending test data around this network to each other is slower than one to one? I mean I know a busy network means it's slower but I'm really trying to understand some more technical details. Thanks for any help

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  • How does Windows 7 detect my switches?

    - by Daniel
    I notices in the Network overview of Windows 7 that my switches are found on the path to the gateway, which baffled me completely. The last time I checked they just took the ethernet packages and transported them to the "right" location. How does this switch detection work? Do switches alter the packages? Do they react on ICMP messages?

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  • Should I switch my server to Ubuntu Server from Windows Server 2003

    - by user22162
    I have a server thats primarily used for SRCDS, I host a few Team Fortress 2 servers on it and I would much prefer a ssh-like (more so the no-gui part) for something like this, mostly because I can't navigate with my phone on VNC very well and also because there really is no need for a gui in this situation. I sort of want to make the switch but I am unsure, because my server 2003 is very fast and If I do need to reboot, it can reboot in under 30 seconds to desktop. Should I switch?

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  • Wireless clients have no route to ethernet clients in OpenWrt router

    - by superjoe30
    I'm using OpenWrt Kamikaze 8.09 on a Linksys WRT54g v1.1 router. I just flashed it with default settings and got everything working, except my wireless laptop cannot ping my desktop which is wired to the router. What can I do to fix this? (My desktop can ping other desktops wired to the router) My routing table: config 'defaults' option 'syn_flood' '1' option 'input' 'ACCEPT' option 'output' 'ACCEPT' option 'forward' 'REJECT' config 'zone' option 'name' 'lan' option 'input' 'ACCEPT' option 'output' 'ACCEPT' option 'forward' 'REJECT' config 'zone' option 'name' 'wan' option 'input' 'REJECT' option 'output' 'ACCEPT' option 'forward' 'REJECT' option 'masq' '1' config 'forwarding' option 'src' 'lan' option 'dest' 'wan' option 'mtu_fix' '1' config 'redirect' option 'src' 'wan' option '_name' 'ssh' option 'proto' 'tcp' option 'src_dport' '22' option 'dest_ip' '192.168.1.100' option 'dest_port' '22' config 'redirect' option 'src' 'wan' option '_name' 'http' option 'proto' 'tcp' option 'src_dport' '8888' option 'dest_ip' '192.168.1.100' option 'dest_port' '8888'

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  • Ethernet interface number changed, and old one does not exist, but does not leave IP address

    - by Sagar
    I have a virtual machine with Mandriva 2007.0 (yes, old - unfortunately we do not have a choice here). Anyway, the problem: Before reboot: active network interface = eth0. No other interfaces present, and network manager confirms this. Static IP address set to 172.31.2.22. No issues, everything working properly, routing et al. -------Reboot--------- After reboot: active network interface = eth1, with a DHCP address. Network manager shows eth0 as disconnected, and not connectable. When I try to set eth1 up with the static IP address (same one), it says "In Use". I then tried ifconfig eth0 172.31.2.29 just to free it up from the eth0 interface so I could use it with eth1 (since this is connected). Result: ifconfig eth0 172.31.2.29 SIOCSIFADDR: No such device eth0: unknown interface: No such device Nothing else changed. Any ideas what could be happening, or at least how I can get my IP address back?

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  • iptables prerouting to redirect source ip address on ethernet

    - by Kevin Campion
    I have 2 ip adresses on the Internet who redirect on the same machine. On this machine, one Debian runs on OpenVZ. I can set iptables rules to redirect all http request to the Debian. iptables prerouting -d ip_address_2 DNAT --to ip_address_local_1 +--------------+ | | | V | ip_address_local_1 I| +------+ +----------+ N|ip_address_1 | |-----|Debian1 VE|-- Apache's log T|-----------------|OpenVZ| +----------+ [client ip_address_1] E| | | | R|ip_address_2 | | | N|--------------+ | | E| +------+ T| Iptables' rules : iptables -t nat -A PREROUTING -p tcp -i eth0 -d ip_address_2 --dport 80 -j DNAT --to ip_address_local_1:80 iptables -A FORWARD -p tcp -i eth0 -o venet0 -d ip_address_local_1 --dport 80 -j ACCEPT iptables -A FORWARD -p tcp -i venet0 -o eth0 -s ip_address_local_1 --sport 80 -j ACCEPT When I go to webpage with "http://ip_address_2", I can see the good content but the ip address on access log file is ip_address_1, I would like to see my ISP's ip address. Any ideas?

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  • I need ethernet controller driver, PCI bus for Presario 6010US

    - by nathaniel
    Hi I am unable to connect to the internet. ,Just installed the OS XP Pro and the device manager has a yellow question mark for controller driver, PCI bus. My network connection shows I am connected to a firewalled network with zero packets sent and received. I checked HP.COM, with no luck. Please advise what I should do. thank you very much

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  • Wireless router blocking some sites while using ethernet is fine

    - by Micke
    I'm using Windows 7 and my router is a wireless Apple Airport Express that is approximately two years old. Suddenly I can't access some sites (for example www.sthlm.friskissvettis.se, or www.vegetarian-shoes.co.uk, some streamed tv-shows on svtplay.se, and a number of other random sites) when connecting to internet with my router. It worked good until recently and I'm fairly sure this problem emerged when my ISP upgraded from 10/10mbit to 100/10mbit speed. Most other sites like facebook and google works fine. When using my network cable to connect to internet everything works fine and I can access these sites. Firmware is current and I've tried reseting the router to factory defaults. Tried different browsers, and I can't ping the "blocked" sites either. Tracert www.sthlm.friskissvettis.se starts with 10.0.0.1 and continues through a number of long addresses until it says timeout. The last working address before timeout was sth-tcy-ipcore01-ge-0-2-0.neq.dgcsystems.net [83.241.252.13], if it matters. Tracert www.vegetarian-shoes.co.uk also eventually gives me a timeout. When the network cable is plugged in, I still get timeout on tracert www.sthlm.friskissvettis.se even though I can access the site in Chrome. Weird. www.vegetarian-shoes.co.uk doesn't give me a tracert timeout when the cable is plugged in, and I can access the site as usual. I've tried changing DNS servers to use opendns servers instead, but to no use. I've tried pinging these two sites with a lower MTU packet size (with this method: http://www.richard-slater.co.uk/archives/2009/10/23/change-your-mtu-under-vista-or-windows-7/), but still can't access them through ping... I don't know what to do anymore.... any suggestions???

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  • Creating virtual switch in VMware

    - by MJI
    We are trying to add a network using vsphere client for VMkernel port while creating a virtual switch. But it prompts us a red cross between the physical adapter and VMkernel port. We did test all the network cables and the network adapters. We tried creating virtual switch for service console but no gains. We have used NIC's which are VMware certified. I have even tried to update bios to check the hardware compatibility but didn't work.

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  • Creating virtual switch in VMware

    - by MJI
    We are trying to add a network using vsphere client for VMkernel port while creating a virtual switch. But it prompts us a red cross between the physical adapter and VMkernel port. We did test all the network cables and the network adapters. We tried creating virtual switch for service console but no gains.

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  • Connect to development server via switch?

    - by letseatfood
    I apologize upfront if this isn't appropriate for superuser. I asked it on serverfault and was told it was too general for that site. I have a laptop with Vista and it receives it's internet connection wireless. I have an old desktop with Ubuntu 10.04 Server Edition installed and it is setup as a development server with Apache, MySQL, and PHP. This works well, with the server having a static IP address. The server is connected to the router via an Ethernet cable. Is it possible to disconnect the cable that is currently connecting the server and the router, then connect the server and workstation to a switch, so that I am still able to connect to the server via web browser from the workstation? I am trying to eliminate the long ethernet cable connecting the server to the router in the other room. I already have a switch, that is why I asked specifically about it. Thanks and I will be more than happy to clarify!

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  • firefox shortcut keys to switch between tabs

    - by doug
    i know about ctrl-tab and ctrl-shift-tab to switch between the tabs inside the mozilla firefox browser. I also know about ctrl+ to access a certain tab from the opened tabs of mozilla firefox. I need to know if is any tab regarding arrow keys in order to switch between tabs ty

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  • clear IP address of Ethernet interface

    - by jackhab
    What is the Linux command to clear IP address of an interface without bringing it down and/or restarting network services. Seems strange ifconfig is able to change IP address but has no option to clear it, or am I wrong? EDIT:As simple as ifconfig eth0 0.0.0.0. They should have put it in the man

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