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  • Losing WLAN connections but maintaining internet connections on WIndows 7 Workgroup

    - by Di
    I have 4 computers all running Windows 7 networked in a Work group through Billion 7404vgp-m wireless router.All drivers and firmware for wireless adapters and router are up to date. Windows Firewall and Defender disabled.Disconnected ipv6. Running Nod 32 anti virus software. All have own static IP address 192.XXX.X.XXX. When I Reset the router all computers have Internet and LAN access for about 1 hour and then they will lose the LAN connection but maintain Internet connection. Resetting wireless adapters or restarting computers does nothing to fix this but resetting router will. What is causing this and how do I fix it. Thanks Di

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  • Synergy on macbook with osx mavericks wifi connection

    - by user332956
    I'm trying to set up Synergy with my macbook pro running OS X 10.9.3 as a client and my Windows 7 desktop as a server. I'm having some pretty bad connection problems though when I try to use my mac. Every couple seconds the mouse or the keyboard will stop working entirely then come back. I ran some tests and found that the ping from my desktop to my mac would be very high every third ping or so(1000+ ms) or sometimes even time out. If I ping my desktop from my mac the pings are all reasonably low. I believe that this is a power saving feature of Mavericks and I have found a way to get around it by continually pinging my router on my mac, keeping my wifi card from going to sleep. I'm using this right now to type this up with synergy and have had zero issues. Has anyone else ran into this issue and found a better solution? So far, I think my best bet would be to buy an ethernet adapter but I'd rather not have yet another cable running across my desk.

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  • Mac OS X: network disabled because security breach

    - by fireeyedboy
    Dear all, I just recieved a message on my Mac OS X system telling me (loosely translated from Dutch): "The network has been temporarily disabled because the network's security was breached." (It's a wireless WPA2-PSK secured network BTW) I looked in the logs of my router (a Zyxel P-2602HW-D1A) only to see a few (outbound) "syn flood TCP ATTACK" logs, but those were from like a week ago, other than that nothing. What tools on Mac OS X do I have to analyse this security breach occurence? Are there some security logs on Mac OS X that I can inspect? What other measurements should I take? And how serious should I take this warning from Mac OS X? System: Macbook Pro Intel Core 2 Duo 2.2 Ghz OS: Mac OS X 10.5.8 Network: wireless WPA2-PSK Relevant software: Parallels Desktop with Windows XP (was open, but stopped at the time) Other systems on my network: Windows XP SP3 desktop (was running at the time) If you need any more info, don't hestitate to ask. Thanks in advance.

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  • Server Names Inside Private Network

    - by thyandrecardoso
    Our office has a private network, where any requests on a (pre-determined) public IP are forwarded to a private IP inside said network. On that private IP, we've got a server running several services, including HTTP servers, and SCM systems. We only control our private network, having no control on the public IP configuration. We bought a domain name, and pointed it to that public IP, so people can access our services from the outside. But, when inside the office, people can't use that DNS name, because the server and any other hosts inside the network share the same public IP! For desktops, inside the office network, dealing with names is really easy: one entry on the hosts file and we're done. However, for laptops, that keep going in and out, and need to access services inside the office, the naming is really annoying. I don't know the "standard" process for dealing with these kind of situations. I've considered installing BIND in the office, and make people configure their wireless and wired connections to use that DNS server. What is the correct approach in this situation? If using BIND (or any other DNS server) is the answer, how should I configure it so that people inside the office can use it to get our custom names, and get forwarded to the ISP DNS when trying to reach the internet?

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  • /proc/net/dev and /sys/class/net/ bogus network interface names

    - by sfink
    I am constructing a list of network interfaces to monitor based on the contents of /proc/net/dev. But I am getting some bogus interfaces in the list: __tmp1104705027 __tmp974528607 Where do those come from? They also show up in /sys/class/net/: # ls -1 /sys/class/net/ eth0 eth1 eth2 eth3 lo sit0 __tmp1104705027 __tmp974528607 For now, I think I'll just ignore anything starting with __tmp, but I'd like to know what they are and where they come from. This is on a recompiled CentOS 5.3 kernel: 2.6.18-128.7.1.el5.tvh.7PAE #1 SMP PREEMPT

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  • Does HP 8530w support Wifi 802.11n?

    - by FoxyBOA
    According to vendor site HP 8530w supports 802.11n draft mode. My Windows 7 tell me that network card is 5100 ABG and know nothing about N mode (guys from Intel forum mentioned, that 802.11N versions must ended with N letter, e.g. 5100 ABN). Not sure if it matter, but my laptop model id is #FU462EA. How could I check that my Wifi card compliant with 802.11n (I suspect that "draft N" could have two "special" meaning: doesn't work with 802.11n at all or requires special activation of the mode). Any hints are welcome.

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  • Can't connect to wireless router anymore due to data rate problem

    - by Jay White
    I was playing around with my wireless router, and switched the mode to a fixed mode B. Now< I can no longer assoicate to the AP. Windows does not give any particular error message, but with wireshark I see that the returned error is that the client does not support the necessary data rate. My wireless card is type n, and it is set to mode a/b/g compatible. I tried setting ot to just b, however this made no difference. How can I set the data rate of my card so that I can connect again to my AP? I would prefer not to just reset the device, as there has been some configuration done that would be a pain to redo, and as well I do not have the ISP password handy. Regardless I would like to understand this situation better.

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  • How do I stop apps trying to use a dial-up connection?

    - by ProfKaos
    Every now and again, I might have to use a dial-up internet connection via another tethered phone, i.e. Bluetooth connection to the GPRS modem. Now I am back on 'ops normal', i.e. using a shared internet connection on my own phone, or on my 3G stick, but some apps, especially IE9, keep popping up a 'dialup connection' dialogue, which I cannot dismiss enough times ever, to make to stay away. How can I tell these idiot applications that I no longer need a dial-up connection?

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  • Kickstarting VMWare ESX 4.1 (Error: No NIC with name bootif)

    - by William
    I'm having an issue kickstarting an installation of VMWaare ESX Classic 4.1. I've stripped down my kickstart a bit to just: accepteula keyboard us auth clearpart --firstdisk --overwritevmfs url --url=10.16.0.1/cblr/ks_mirror/esx-classic-4.1.0-260247 rootpw --iscrypted $1$zZJa3g7g$mD8d.6QgbPku1QovQTAps/ timezone 'US/Pacific' network --addvmportgroup=true --device=vmnic0 --bootproto=dhcp part '/boot' --fstype=ext3 --size=1100 --onfirstdisk part 'none' --fstype=vmkcore --size=110 --onfirstdisk part 'datastore1' --fstype=vmfs3 --size=8920 --grow --onfirstdisk virtualdisk 'esxconsole' --size=7920 --onvmfs='datastore1' part 'swap' --fstype=swap --size=916 --onvirtualdisk='esxconsole' part '/var/log' --fstype=ext3 --size=2000 --onvirtualdisk='esxconsole' part '/' --fstype=ext3 --size=5000 --grow --onvirtualdisk='esxconsole' %post --interpreter=bash However, when I attempt to use this kickstart during a PXE install with no additional kernel options, I get the following error: There was a problem with the Network Device specified on the command line. Error: No NIC found with name bootif If I comment out the network line in the kickstart, the error changes to: There was a problem with the Network Device specified on the command line. Error: No NIC found with name eth0 How can I fix this? Thanks.

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  • connect server to server on secondary NIC

    - by microchasm
    Hi, I have a CentOS box with multiple NIC's running Apache. I also have another box running RHEL that will be the MySQL server. I'm trying to use the secondary NIC on the Apache box to connect directly to the MySQL server, but so far no luck. I want to isolate the MySQL box as much as possible which is why I'm going for a direct connection as opposed to running through a switch. I have a crossover cable running between them. IP configs: Apache box eth0 [to lan] ip addr: 192.168.200.100 netmask: 255.255.0.0 gateway: 192.168.111.1 eth1 [to mysql] ip addr: 192.168.200.101 netmask: 255.255.0.0 gateway: [blank] MySQL box eth0 [to apache] ip addr: 192.168.200.203 netmask: 255.255.0.0 gateway: 192.168.200.201 The rest of our network is on 192.168.111.0/24 subnet. Ping only returns Destination Host Unreachable. I've tried various variations of this setup (including straight through cable), and I can't seem to get them to talk to each other. Any help appreciated.

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  • Cisco VPN disconnects after 5 seconds with error 422

    - by Marius
    I'm trying to connect to my university's server with VPN using Cisco VPN Client version 5.0.04, but after 5 seconds it disconnects with the error message 422: Lost contact with the secure gateway. Check your connection. From my research on the net it seems this could be because it tries to find my IP, and finds out that this is 127.0.0.1. Then 5 seconds later it discovers that I have a new IP (my actual IP), and it disconnects because I'm not allowed to change IP. Does anyone know how I could fix this, or if there is another reason i get this error? Update I looked through the log, and found this error, which confirms what I thought, except it gets the correct IP first, then changes it to localhost. 87 18:56:53.250 08/24/09 Sev=Warning/3 CM/0xA3100027 Adapter address changed from 149.171.237.25. Current address(es): 127.0.0.1.

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  • Recovering drivers from previous installation?

    - by Walkerneo
    Yesterday I bought a new computer and I've been setting it up since this morning. The hard drive came with windows 7 home premium (x64) installed, but I decided to instead install windows 7 ultimate (x64) - this is what I'm currently using. Unfortunately, there were some drivers that were installed that I need in this installation. I only notice because the computer doesn't have the ethernet drivers, so I'm only able to connect to the internet via wireless. There are other drivers missing as well, but I'm not yet seeing the effects. I still have the Windows.old folder with the previous installation, which has the drivers. Is there any way to copy the necessary ones over? I tried the options for updating driver software through device manager with the path set to System32\drivers of the old installation, but it didn't find anything.

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  • Assign fixed IP address via DHCP by DNS lookup

    - by Janoszen
    Preface I'm building a virtualization environment with Ubuntu 14.04 and LXC. I don't want to write my own template since the upgrade from 12.04 to 14.04 has shown that backwards compatibility is not guaranteed. Therefore I'm deploying my virtual machines via lxc-create, using the default Ubuntu template. The DNS for the servers is provided by Amazon Route 53, so no local DNS server is needed. I also use Puppet to configure my servers, so I want to keep the manual effort on the deployment minimal. Now, the default Ubuntu template assigns IP addresses via DHCP. Therefore, I need a local DHCP server to assign IP addresses to the nodes, so I can SSH into them and get Puppet running. Since Puppet requires a proper DNS setup, assigning temporary IP addresses is not an option, the client needs to get the right hostname and IP address from the start. Question What DHCP server do I use and how do I get it to assign the IP address based only on the host-name DHCP option by performing a DNS lookup on that very host name? What I've tried I tried to make it work using the ISC DHCP server, however, the manual clearly states: Please be aware that only the dhcp-client-identifier option and the hardware address can be used to match a host declaration, or the host-identifier option parameter for DHCPv6 servers. For example, it is not possible to match a host declaration to a host-name option. This is because the host-name option cannot be guaranteed to be unique for any given client, whereas both the hardware address and dhcp-client-identifier option are at least theoretically guaranteed to be unique to a given client. I also tried to create a class that matches the hostname like this: class "my-client-name" { match if option host-name = "my-client-name"; fixed-address my-client-name.my-domain.com; } Unfortunately the fixed-address option is not allowed in class statements. I can replace it with a 1-size pool, which works as expected: subnet 10.103.0.0 netmask 255.255.0.0 { option routers 10.103.1.1; class "my-client-name" { match if option host-name = "my-client-name"; } pool { allow members of "my-client-name"; range 10.103.1.2 10.103.1.2; } } However, this would require me to administer the IP addresses in two places (Amazon Route53 and the DHCP server), which I would prefer not to do. About security Since this is only used in the bootstrapping phase on an internal network and is then replaced by a static network configuration by Puppet, this shouldn't be an issue from a security standpoint. I am, however, aware that the virtual machine bootstraps with "ubuntu:ubuntu" credentials, which I intend to fix once this is running.

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  • I just ordered 70/10 internet service, and need a new router I think?

    - by data_jepp
    Before I had 25/5 service and the N standard router did just fine. Now it doesn't do the job. Online speedtest reads at 82 so I have the line. But my laptop is getting less than 30 in my room. My laptop has the following WiFi card: http://www.intel.com/content/www/us/en/wireless-products/centrino-advanced-n-6205.html What is this talk about 2.4 and 5GHz? Can my laptop be connected at once over both bands? And would that let me use the full 70Mb over Wi-Fi?

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  • Scan all domain workstations for specific registry key/environmental variable

    - by Trevor
    I'm looking for scripts or software that can scan workstations on a domain for a particular environmental variable (for interest, it was used to store the SOE build version) and generate a report. Accuracy is key, I don't want any workstations skipped or missed. And considering workstations will need to be powered on for anything to remotely read from the registry (and there's no guarantee they will be), that means something that can sit and run continuously for a while, updating its own records as it goes. Does anyone know of such a beast?

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  • ESET Remote Administrator Console showing infected files on a client, but threat log is empty

    - by Aron Rotteveel
    We recently deployed ESET NOD32 Antivirus on our small domain network and use the Remote Adminstrator to manage everything remotely. On a recent full system scan, one of the clients shows 10 infected files of which 4 have been cleaned in the scan log. The strange thing, however, is that the threat log is empty. Is there any reason why the threat log is empty? What has happened to the 6 remaining uncleaned files? Where can I view information on what files are infected and what they have been infected with? I know this can be done through the scan log properties screen, but with 958790 files scanned, I obviously do not want to browse through this list. Any help is appreciated.

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  • VM can't connect to outside in bridged mode

    - by Kamal
    I am not able to ping any machine(not even the host) from Guest VM in bridged mode. But I got an IP which is on the same subnet as host. I can ping my guest VM from the host and can use ssh to connect to the guest. I am using Vmware workstation 6.5. Guest VM is a centos VM and host is windows xp. Every thing works fine in NAT mode. Any clues as to what could be happening. I tried disabling all the firewalls I have.

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  • How to prevent Outlook from receiving multiple copies of the same email

    - by martani_net
    This question might be asked already, but it's different from this one. My boss has Outlook 2003, when he synchronize his emails while connecting through the local server (using Exchange I guess) he gets his emails normally. Once he is outside (not connection to our LAN) he gets each email duplicated 3 or 4 times. Does anyone experienced this before? and how can we fix this? Please no links to FAQ pages. For info, we are using Kaspersky anti virus and Windows 2003 server, with windows XP clients. [Update] Actually we have a bunch of 5 or 6 email accounts on Outlook, and only one of them recieve duplicated copies of the same email, all the others are cool. Further more all these email are using the sae service, Gmail for example. [Update 2] I just found out that Outlook is configured to remove emails from the server already, also, some emails exceeds 5 copies! Thank you

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  • Why do Ping and Dig provide different IP address than nslookup?

    - by user1032531
    When pinging my domain name which points to my home public IP from two different servers on my LAN, it shows them pinging different IP. Further investigation shows dig and nslookup providing different results. See below. A little history. My IP used to be 11.22.33.444 and is hosted by Comcast. I changed routers, and it somehow got changed to 55.66.77.888. I've since updated my 1and1 domain name to point to the 55.66.77.888. desktop is a basic server, runs the web server, and connects wirelessly to my LAN. laptop is a GUI and connected via CAT5. Both operate Centos6.4. My old router was a D-Link, and used their "Virtual Server" feature to pass port 80 to desktop. My new router is a Linksys, and I use their "Port Forwarding" feature to pass port 80 to desktop (however, I haven't gotten this part working yet). What is going on??? Why the different IPs? Obviously, it most somehow be stored on the server, but why does the actual machine even know the public IP since it is on a LAN? How do I purge the old IP? [root@desktop etc]# dig +short myDomain.com 11.22.33.444 [root@desktop etc]# nslookup www.myDomain.com Server: 8.8.8.8 Address: 8.8.8.8#53 Non-authoritative answer: Name: www.myDomain.com Address: 55.66.77.888 [root@desktop etc]# dig myDomain.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.6 <<>> myDomain.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13822 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;myDomain.com. IN A ;; ANSWER SECTION: myDomain.com. 16031 IN A 11.22.33.444 ;; Query time: 21 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Oct 21 04:36:52 2013 ;; MSG SIZE rcvd: 44 [root@desktop etc]# [root@laptop ~]# dig +short myDomain.com 55.66.77.888 [root@laptop ~]# nslookup www.myDomain.com Server: 192.168.0.1 Address: 192.168.0.1#53 Non-authoritative answer: Name: www.myDomain.com Address: 55.66.77.888 [root@laptop ~]#

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  • esxi VM will not connect to virual switch

    - by NitroxDM
    I have a exsi box with a VM (Windows 2003) that will not connect to any of the switches. The switch shows the VM connected but I can not ping anything on the network. I have double checked the VM's IP. No dice. There are a ton of messages in the log: [DATE 'VmMisc' NNNNN warning] Failed to validate VM IP address: unknown Update: There are 3 other VMs. Each vSwitch has 56 ports. I can ping from one nic to the other. Each vSwitch shows that the new VM is connect. VMware ESX Server 3i V 3.5.9 Build 123629 Update 2: Out of the blue it just started working. I didn't change anything. I think it has something to do with RRAS.

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  • How much network latency is "typical" for east - west coast USA?

    - by Jeff Atwood
    At the moment we're trying to decide whether to move our datacenter from the west coast to the east coast. However, I am seeing some disturbing latency numbers from my west coast location to the east coast. Here's a sample result, retrieving a small .png logo file in Google Chrome and using the dev tools to see how long the request takes: West coast to east coast: 215 ms latency, 46 ms transfer time, 261 ms total West coast to west coast: 114 ms latency, 41 ms transfer time, 155 ms total It makes sense that Corvallis, OR is geographically closer to my location in Berkeley, CA so I expect the connection to be a bit faster.. but I'm seeing an increase in latency of +100ms when I perform the same test to the NYC server. That seems .. excessive to me. Particularly since the time spent transferring the actual data only increased 10%, yet the latency increased 100%! That feels... wrong... to me. I found a few links here that were helpful (through Google no less!) ... Does routing distance affect performance significantly? How does geography affect network latency? Latency in Internet connections from Europe to USA ... but nothing authoritative. So, is this normal? It doesn't feel normal. What is the "typical" latency I should expect when moving network packets from the east coast <--> west coast of the USA?

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  • Issue with Netgear GS108T Managed Switch and Jumbo Frames

    - by Richie086
    I recently purchased a Netgear GS108T managed switch and I am trying to configure jumbo packets between my NAS (Thecus N4100Pro), PC and managed switch. I should mention the fact that I was able to use jumbo frames between my PC and NAS before I purchased the switch without issue. My Desktop has a wired gigabit NIC (Intel 82579V Gigabit) and has the ability to configure jumbo frames (see pic) that are either 9014 bytes or 4088 bytes. I choose 9014 bytes for the jumbo frame size My NAS supports jumbo frames as well, and is configured to use 9014 as the frame size. When I go into my Netgear managed switch and set the frame size to 9014 on the ports I am using for my PC and NAS. See image As soon as I hit apply in the web interface, I loose my connection to the SMB shares on my NAS and I can no longer connect to the web admin interface for my NAS. The really strange thing is I can ping my NAS via the ping command, but when I try to connect to the web interface on port 80 or port 443 the page never loads. I did a scan from my PC to my NAS using nmap and I can see the following ports open PORT STATE SERVICE 22/tcp open ssh 80/tcp open http 111/tcp open rpcbind 139/tcp open netbios-ssn 443/tcp open https 445/tcp open microsoft-ds 631/tcp open ipp 2000/tcp open cisco-sccp 2049/tcp open nfs 3260/tcp open iscsi 49152/tcp open unknown MAC Address: 00:14:FD:15:00:44 (Thecus Technology) Read data files from: C:\Program Files (x86)\Nmap Nmap done: 1 IP address (1 host up) scanned in 211.97 seconds Raw packets sent: 1 (28B) | Rcvd: 1 (28B) Anyone have any idea what is going on here? Why is nmap able to detect the ports are open and listening for http, https and file sharing but I cant connect when all devices have jumbo packets enabled? Stranger still - I did a packet capture using wireshark while the nmap scan was running and filtered so I only saw converstations between my PC and my NAS. Here are the packet details from my scan Only 4 packets over 5k bytes? What is going on here? Do I not need to configure jumbo frame sizes on the switch? I have an internet connection from my pc to the switch to my router - I just cannot connect to my NAS. I just checked on my iPhone and I am able to open my NAS web admin interface without issue on my iPhone! WTF!!!!!! Let me know if you need more details..

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  • What is Allow multicast from Broadband Network?

    - by PeanutsMonkey
    If a wireless modem router has the option Allow multicast from Broadband Network, what does this mean exactly? What risks are there to leaving it enabled and why would you have it enabled? I understand that a broadcast is sending a packet to every device on the network and a multicast is send a packet to a specified set of addresses. A multicast packet can cross routers whereas a broadcast cannot although I don't quite understand how these "set of addresses are specified"

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  • Block P2P traffic on a Linksys router WRT54G with tomato firmware

    - by Kami
    Hi, I'm running a small wireless network (6 to 10 users) on a Lynksys WRT54G with tomato firmware sharing an internet connection. I don't want the users to download files with bittorrent (mainly used) and other p2p apps. I've also found some solutions about lowering p2p traffic priority using QoS. I really need to BAN p2p traffic. Does anyone know how to setup some rules to deny that kind of traffic ? I've tried to setup an Access Restriction Rule: But it's not working at all ...

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  • Comparison of Firewall, Intrusion Prevention, Detection and Antivirus Technologies in Organizational

    - by Berkay
    in these days i'm reading about intrusion prevention/detection systems.When reading i really confused in some points. First, the firewall and antivirus technologies are known terms for years, however now IDS becomes popular. My question includes: in organizational network architectures when/where do we use these systems ? What are the benefits of using each ? Does Firewall contains all these others? If you give me some examples, it will help much. Thanks.

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