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  • Internet Connectivity Issue

    - by MastaChief11
    Lately, I have been having issues connecting to the internet on one of my computers. The computer I am using now, however, is on the same network as the computer I am posting from. The issues seemed to randomly start about 2 days ago, and the only thing that seemed to fix the issue was to connect to Hotspot Shield VPN. I do not get any yellow warning signs by the Wi-Fi icon in the taskbar. I am sometimes able to use Google search, but I can never go to a website. I am also not able to re-install Hotspot Shield or update Flash because they have to connect to their company's servers. I have tried other VPN services just to see if it would fix anything, but as I expected, nothing changed. I am unsure of how I can fix the issue, and I appreciate all help given. I am running Windows 7 64 Bit Pro on a custom-built computer. Thanks.

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  • Vlans and subinterfaces

    - by Adeodatus
    I've inherited a moderate size network that I'm trying to bring some sanity to. Basically, its 8 public class Cs and a slew of private ranges all on one vlan (vlan1, of course). Most of the network is located throughout dark sites. I need to start separating some of the network. I've changed the ports from the main cisco switch (3560) to the cisco router (3825) and the other remote switches to trunking with dot1q encapsulation. I'd like to start moving a few select subnets to different vlans. To get some of the different services provided on our address space (and to separate customers) on to different vlans, do I need to create a subinterface on the router for each vlan and, if so, how do I get the switch port to work on a specific vlan? Keep in mind, these are dark sites and geting console access is difficult if not impossible at the moment. I was planning on creating a subinterface on the router for each vlan then setting the ports with services I want to move to a different vlan to allow only that vlan. Example of vlan3: 3825: interface GigabitEthernet0/1.3 description Vlan-3 encapsulation dot1Q 3 ip address 192.168.0.81 255.255.255.240 the connection between the switch and router: interface GigabitEthernet0/48 description Core-router switchport trunk encapsulation dot1q switchport mode trunk show interfaces gi0/48 switchport Name: Gi0/48 Switchport: Enabled Administrative Mode: trunk Operational Mode: trunk Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: dot1q Negotiation of Trunking: On Access Mode VLAN: 1 (default) Trunking Native Mode VLAN: 1 (default) Administrative Native VLAN tagging: enabled Voice VLAN: none Administrative private-vlan host-association: none Administrative private-vlan mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk Native VLAN tagging: enabled Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Capture VLANs Allowed: ALL Protected: false Unknown unicast blocked: disabled Unknown multicast blocked: disabled Appliance trust: none So, if the boxen hanging off of gi0/18 on the 3560 are on an unmanaged layer2 switch and all within the 192.168.0.82-95 range and are using 192.168.0.81 as their gateway, what is left to do, especially to gi0/18, to get this working on vlan3? Are there any recommendations for a better setup without taking everything offline?

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  • Pushing WiFi configuration through Active Directory

    - by Hank Gettinger
    I'm trying to push wifi settings to client computers through Active Directory, something that will add a defaul SSID to connect to and a WPA password. The only thing I've heard of is a script by Aruba labs called wificfg_xp.exe on a couple of forums (Here and here), but the link to the download page is always broken. Does any one know of an alternative way to download this file, or another way to push these settings with AD?

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  • How can I use dynamic routing with openvpn tunnels?

    - by pQd
    i'm thinking about using dynamic routing [ OSPF or RIP ] via OpenVPN tunnels. right now i have few offices connected in full mesh, but this is not scalable solution as we add more locations. i would like to avoid situation when plenty of internal traffic is affected if one of two vpn termination points that i plan to use is down. do you have similar configuration working in production? if so - what routing daemon did you use - quagga? something else? did you encounter any problems? thanks!

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  • Monitoring/logging a malfunctioning internet connection

    - by Pekka
    I have a mysterious internet connection problem: Every 15-20 minutes, the connection will become very slow, and take 2-3 minutes for anything to load. I've had a technician from the ISP over here to test the hardware, and everything is in pristine condition. They have no other explanation than a configuration error on my machine, a possibility I can exclude 90% because I'm experiencing the same problems with another machine. I will have to monitor the situation now, and I would like to run a program that logs when internet connections become slow. I thought about putting something together using at and wget. Does anybody know of some other tool for this that does this out of the box - maybe something with an adjustable request frequency, logging connection speeds etc.?

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  • What software do you use to detect an internect connection drop?

    - by Darryl Hein
    I'm looking for a piece of software to detect drops in my internet connection and log those drops. OS doesn't really matter since I have pretty much everything running here, although something on OSX would be nice. I also don't really care how it determines that connection has been dropped, but I think that there must be something better than a ping or at least a combination of a ping and something else.

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  • Why can't I access my own web server from my local network?

    - by frenetic
    I have a web server in my home network and I'm using ZoneEdit for dynamic DNS. It's accessible perfectly to everyone outside of my local network, but since I switched to a Gateway 2Wire DSL modem/router I'm unable to use the domain to access the server from my network. I can access it via a local IP or by putting it in my Windows hosts file but this is annoying to do on every computer and for every subdomain. Any idea how I can fix this? Thanks!

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  • Why can't I access my own web server from my local network?

    - by frenetic
    I have a web server in my home network and I'm using ZoneEdit for dynamic DNS. It's accessible perfectly to everyone outside of my local network, but since I switched to a Gateway 2Wire DSL modem/router I'm unable to use the domain to access the server from my network. I can access it via a local IP or by putting it in my Windows hosts file but this is annoying to do on every computer and for every subdomain. Any idea how I can fix this? Thanks!

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  • Set 802.1Q tagged port on VLAN1 on Dell PowerConnect switch

    - by Javier
    I'm having big troubles when adding this Dell switch to my network. Here we use several VLANs to segment traffic. All switches (3com and DLink mostly) have configured the same VLANs, most ports are 'untagged' and belong to a single VLAN, except for the ports used to join together the switches (in a star topology), these ports belong to all VLANs and use 802.1Q tags. So far, it works really well. But on this new switch (a Dell PowerConnect 5448), the settings are very different (and confusing). I have configured the same VLANs, an the uplink ports are set in 'general' mode (supposed to be fully 802.1Q compliant), I can set the VLAN membership as 'T' on these ports for all VLANs except VLAN 1. It always stay as 'U' on VLAN 1. Any ideas?

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  • CentOS: eth0 not starting on boot

    - by Cameron Aziz
    Whenever I reboot a CentOS Hyper-V VM, eth0 does not start automatically. All I need to do is perform ifup eth0 and all is fixed, but that isn't feasible from ssh! I am starting in runlevel 3. After I perform ifup eth0 on the console: [root@localhost ~]# ifconfig eth0 Link encap:Ethernet HWaddr 00:15:5D:2B:2B:07 inet addr:10.10.0.3 Bcast:10.10.0.255 Mask:255.255.255.0 inet6 addr: fe80::215:5dff:fe2b:2b07/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:34 errors:0 dropped:0 overruns:0 frame:0 TX packets:49 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4656 (4.5 KiB) TX bytes:6399 (6.2 KiB) Interrupt:9 Base address:0xa000 [root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=none IPADDR=10.10.0.3 NETMASK=255.255.255.0 GATEWAY=10.10.0.1 USERCTL=no ONBOOT=yes [root@localhost ~]# chkconfig --list | grep network network 0:off 1:off 2:on 3:on 4:on 5:on 6:off

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  • 2 x Netgear GS724T (Dual GBIC) trunking issue

    - by Arthor
    I have the following: Netgear GS724T (Firmware Version V1.0.3_35, Protocol Version - 2.001.002) 4 x Indineon ISFP GBR/FC Settings STP Function - Enabled Fast Link - Enabled Trunking port 23,24, (21,22 - RJ45 cables, but not connected.) I have connected both switches via 2 fiber cables and want to use trunking. The problem I am having. Sometimes I get a an issue when none of the switches cannot talk with each other, nor the devices, sometime they can. The problem is irregular and no patten can be determined The statistics shows that when the switches does not work, they have RX errors If I remove one to the GBIC connections, then everything works as normal.] Question Does anyone have a solution for this please? Thanks

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  • How do I configure a secondary gateway in RHEL5?

    - by Brett Ryan
    Greetings, we have been experiencing a random timeout issue with VPN users connecting to one of our servers which is causing a problem. My network administrator has instructed me to configure a secondary gateway to include the VPN connection. My current connection resides as follows, 10.1.9.1 is the internal gateway to the internet, I'd like to add 10.1.1.20 as the VPN gateway. # Broadcom Corporation NetXtreme II BCM5708S Gigabit Ethernet DEVICE=eth0 BOOTPROTO=none BROADCAST=10.1.255.255 IPADDR=10.1.1.22 IPV6_AUTOCONF=yes NETMASK=255.255.0.0 NETWORK=10.1.0.0 ONBOOT=yes GATEWAY=10.1.9.1 TYPE=Ethernet USERCTL=no IPV6INIT=no PEERDNS=yes

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  • OS X will not register newly installed network adapters

    - by Chris
    I have purchased an Edimax 7318USg and tested it on a Windows machine (works). The installation process for the software for this adapter runs smoothly. However, OS X simply does not recognize new network adapters. When you go to System Preferences/Network, a new network adapter should be present/there should be an alert. This is not the case. Why might this be? Is there a setting I may reset to force the operating system to recognize this? Thanks!

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  • How can I unregister a service with dns-sd?

    - by Roman
    I am trying to use "dns-sd" command line tool on my Windows 7 machine. I can already do something. For example I can register a service using "dns-sd -R ...". I also can browser (see) registered services using "dns-sd -B ...". What I still miss, is how to unregister a service. At the moment when I type "dns-sd -R ..." the dns-sd does not return me to the command prompt. To return to the command prompt I need to press Ctrl-C. And the service stays registered till I press Ctrl-C. What I want is to run "dns-sd -R ..." in the background regime and then I would like to have a possibility to unregister a service from the command line. One more thing which I do not understand yet is what "to look up a service" means. In my picture it should be sufficient to register a service, to see it and then to unregister it. But apparently I need to look up a service. What does it mean and why I need to do it?

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  • Is my Cisco switch port bad?

    - by ewwhite
    I've been chasing a packet-loss and network stability issue for a handful of end-users on an internal network for the past few days... These issues surfaced last week, however the location was struck by lightning six weeks ago. I was seeing 5-10% packet loss between a stack of four Cisco 2960's and several PC's and phones on the other side of a 77-meter run. The PC's were run inline with the phones over a trunked link (switchport configuration pastebin). We were seeing dropped calls and interruptions in client-server applications and Microsoft Exchange connectivity. I tried the usual troubleshooting steps remotely, having a local technician do the following during breaks in user and production activity: change cables between the wall jack and device. change patch cables between the patch panel and switch port(s). try different switch ports within the 2960 stack. change end-user devices with known-good equipment (new phones, different PC's). clear switch port interface counters and monitor incrementing errors closely. (Pastebin output of sh int) Pored over the device logs and Observium RRD graphs. No link up/down issues from the switch side. change power strips on the end-user side. test cable runs from the Cisco 2960 using test cable-diagnostics tdr int Gi4/0/9 (clean)* test cable runs with a Tripp-Lite cable tester. (clean) run diagnostics on the switch stack members. (clean) In the end, it took three changes of switch ports to find a stable solution. The only logical conclusion is that a few Cisco 2960 switch ports are bad or flaky... Not dead, but not consistent in behavior either. I'm not used to seeing individual ports die in this manner. What else can I test or check to determine if these devices are bad? Is it common for single ports to have problems, rather than a contiguous bank of ports? BTW - show cable-diagnostics tdr int Gi4/0/14 is very cool... Interface Speed Local pair Pair length Remote pair Pair status --------- ----- ---------- ------------------ ----------- -------------------- Gi4/0/14 1000M Pair A 79 +/- 0 meters Pair B Normal Pair B 75 +/- 0 meters Pair A Normal Pair C 77 +/- 0 meters Pair D Normal Pair D 79 +/- 0 meters Pair C Normal

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  • racoon-tool doesn't generate full racoon.conf file in /var/lib/racoon/racoon.conf

    - by robthewolf
    I am using ipsec-tools/racoon to create my VPN. I am using racoon-tool to configure racoon.conf but when I run racoon-tool reload it only generates the first section - Global items. When I run racoon-tool I get: # racoon-tool reload Loading SAD and SPD... SAD and SPD loaded. Configuring racoon...done. This is the entire file /var/lib/racoon/racoon.conf # # Racoon configuration for Samuel # Generated on Wed Jan 5 21:31:49 2011 by racoon-tool # # # Global items # path pre_shared_key "/etc/racoon/psk.txt"; path certificate "/etc/racoon/certs"; log debug; I cannot find anywhere a solution as to why this is happening. Please help

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  • What does transactions per seconds for a load balancer mean

    - by Anurag
    I was looking at the product matrix of webmux 592G(load balancer). It says maximum connections per sec = 2.8M Maximum number of transactions = 100,000 What does the above numbers mean. Does above means that load balancer can have 2.8M connections open but only 100K of them will be active per seconds. Also incase any one has used webmux 592G do you guys know in practice how many connections it can have open and what qps it can serve

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  • Software for managing a gamenet

    - by Isaac
    I need a software for managing gamenet (Gamenet is like a cybercafe except people play games in gamenet instead of surfing the web!) The software should have this basic features: Accounting features (defining users, assigning a usage time to them, etc) Denying access to regular windows features (windows explorer, creating/editing/deleting files) Showing a list of available games to users to run. Creating login report I've tested a software named GamePort but it has some bugs and shortcomings.

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  • Software for managing a gamenet

    - by Isaac
    I need a software for managing gamenet (Gamenet is like a cybercafe except people play games in gamenet instead of surfing the web!) The software should have this basic features: Accounting features (defining users, assigning a usage time to them, etc) Denying access to regular windows features (windows explorer, creating/editing/deleting files) Showing a list of available games to users to run. Creating login report I've tested a software named GamePort but it has some bugs and shortcomings.

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  • High load average due to high system cpu load (%sys)

    - by Nick
    We have server with high traffic website. Recently we moved from 2 x 4 core server (8 cores in /proc/cpuinfo), 32 GB RAM, running CentOS 5.x, to 2 x 4 core server (16 cores in /proc/cpuinfo), 32 GB RAM, running CentOS 6.3 Server running nginx as a proxy, mysql server and sphinx-search. Traffic is high, but mysql and sphinx-search databases are relatively small, and usually everything works blazing fast. Today server experienced load average of 100++. Looking at top and sar, we noticed that (%sys) is very high - 50 to 70%. Disk utilization was less 1%. We tried to reboot, but problem existed after the reboot. At any moment server had at least 3-4 GB free RAM. Only message shown by dmesg was "possible SYN flooding on port 80. Sending cookies.". Here is snippet of sar 11:00:01 CPU %user %nice %system %iowait %steal %idle 11:10:01 all 21.60 0.00 66.38 0.03 0.00 11.99 We know that this is traffic issue, but we do not know how to proceed future and where to check for solution. Is there a way we can find where exactly those "66.38%" are used. Any suggestions would be appreciated.

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  • Cannot access server shares over VPN

    - by DuncanDavies
    I've set up a single hosted server to use as a development environment for a web-based application. The web app is served up fine on port 80, however I'm struggling to get my VPN to behave how I'd expect so the developers don't have the access they require. The VPN connects fine and I can access the back-end database (SQL Server) which resides on the server with the client tools from the laptops. However they cannot access any shared folders. The server's local IP address is 10.x.x.x, and I've assigned a static IP address pool to RRAS (of 192.168.100.1 - 20). The clients pick up a valid IP Address (i.e. 192.168.100.9) when they connect. There is no name resolution setup, DNS or WINS. When connected via VPN the clients can ping the server (192.168.100.1) by IP Address, but cannot map a drive to a shared folder (net use * \\192.168.100.1\xxxxx) - I get 'System error 53 has occurred. The network path was not found.' I don't understand why I can ping by the ip, but not map by it. Some details: Server OS is Windows 2008 (Datacenter) VPN is SSTP using RRAS Clients are all Windows 7 I've tried temporarily disabling the firewalls So, why can we not access the file system when everything else (ping, RDP, SQL Server clients tools) works? Thanks for your help Duncan

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  • Browser caching is generating hugo I/O to server

    - by Rime
    Our users My Documents are stored on a Emc NAS. I have noticed huge traffic coming from users and I see that most of it is coming to cache directories of Internet Explorer and other browsers. One thing i suspect is Adobe Flash caching streams. We have various Windows clients and no restrictions on browsers. Is there any way to remove this traffic from our NAS by a group policy or whatever? Thanks Rime

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