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  • Windows 7 File shares randomly no accessible from OSx

    - by Zen_Silence
    Hello Everyone!, My setup is I have a windows 7 computer acting as a file server. All my computers can connect to it fine including my mac. The problem is that randomly the mac will get kicked off the file share (even when i am in the middle of using it) and will not be allowed to reconnect to it until i reboot the windows 7 machine. (Rebooting the mac doesn't help) Does anyone know what could be causing this to happen?

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  • Block p2p downloading in my office?

    - by Andrew
    I work in an education office in a third world country. We pay for internet by the megabyte (no other choice) and have lately been using an incredible amount of bandwidth. This is because the office staff have found out about p2p sharing. As far as I know, Limewire is the only program they're using, but I'm sure it's just a matter of time before they discover the more general world of bittorrent. Using only a linksys router (that I could flash), is there any way for me prevent the office from destroying our bandwidth cap by downloading personal items (against policy). Even semi-fixes would be better than nothing.

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  • Connecting two pcs through cable, at the same time as wireless

    - by Steffen
    I've got 2 pcs setup with WLAN - however when I copy files between the machines it takes forever (obviously, since I run 801.11g). So I thought, why not just connect them directly with a cable (my wireless router is the other end of the house, that's why I don't use cables to that) However how should I configure the LAN connection on each machine, so I can use it for transferring files between them, whilst using my WLAN to access the Internet ? I was thinking about letting one machine be gateway, but then Windows pops up with a lot of warnings (basically it says this won't work when you're using two disjoint networks) And now I'm at a loss as to what to try.

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  • finding the best network latency between two countries

    - by Yoav Aner
    I know there are many tools to test for bandwidth and latency, but they all rely on having at least one host from which you can run those tests. I wonder whether there's an online source or some other way to guestimate the latency or speed between two countries (in general). For example, would a customer in Japan get lower latency if the server is located in Singapore or Australia? Is a user in India likely to get higher download speed from a server in the UK or in the US? Are there any online resources or some clever ways to answer those questions with a reasonable degree of accuracy? [UPDATE]: Thanks for the great suggestions from Raffael Luthiger. I didn't know about those looking glass servers. The submarine cable maps were also really cool to discover (Thanks to Jesper Mortensen). Also seems really wise if I could ask those network professional in the area for their experience, but obviously I don't have access to those. At least some of them are on SF :) However, I'm still a little unsure how to combine those resources to give me some measurements. This is the information I have: Two countries (A,B). I do have IP addresses of customers in country A (I can obtain those from the web server log files for example). Presumably I can find some looking glass servers in country B and run a trace to those IPs. What's the best measurements to use? Are there any scripts that help automate at least some of this process?

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  • How to use ipw3945 on Ubuntu 9.04

    - by Aaron
    Note: uname -a 2.6.28-16-generic cat /etc/issue Ubuntu 9.04 \n \l I have disabled iwl3945: cat /etc/modprobe.d/blacklist.conf | tail -3 blacklist iwl3945 blacklist mac8021 Question: How can I use iwp3945 instead?

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  • Getting an alert when my oracle database goes up or down

    - by CodeSlave
    How can I get an e-mail alert when my oracle database comes up or down? I have a database that I need to know when it goes down (it would be nice to know if it has come back up), preferably from a remote machine. Conceivably I could hack together something that TNSPings my DB and e-mails me when that changes, but I'm hoping there's a free package out there. Something that would run on windows. Any strong recommendations?

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  • Network Load Balancing, intermittent port problem on Windows Server 2008

    - by Jimmy Chandra
    Trying to troubleshoot an intermittent problem on a Windows Server 2008 NLB. I think it might be related to an NLB issue. We are using Windows Network Load Balancing to balance load for our multiserver SharePoint front ends. Say... Web Front End 1 IP is 192.168.1.100 and Web Front End 2 IP is 192.168.1.101, the NLB is setup to load balance both WFE servers on any incoming traffic to the IP 192.168.1.200. Sometimes we got an intermittent issue where when we try to access the SharePoint site using 192.168.1.200:8080 (say the site is set up to run on port 8080) from a remote client, it will display page not found. Pinging the 192.168.1.200 will give responses, but when trying to telnet to 192.168.1.200:8080 it just won't connect. However, browsing the SharePoint site directly on individual WFE (192.168.1.100 and 192.168.1.101) show no problem whatsoever. My guess also (we didn't get a chance to try it yet, but I think it should work), if I try connecting remotely to individual server, it will respond just fine. But any attempt on trying to connect using the virtual IP (192.168.1.200) will fail miserably. Funny thing is, after a while it will return back to normal. Anyone had similar experience with this type of problem while implementing NLB before? We are doing this in a virtual environment.

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  • Ubuntu Laptop as a wireless hotspot on bridge mode

    - by nixnotwin
    I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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  • Ubuntu Laptop as a wireless hotspot on bridge mode

    - by nixnotwin
    I have a wired router to which my ubuntu laptop connects via ethernet. The wierless NIC of the laptop acts as a wireless hotspot on master mode. I use hostapd fo this. I have bridged eth0 and wlan0, so my wireless clients that connect to my laptop over wifi get ip from the wired router via dhcp, so the devices get registered at the wired router ( and the laptop is just an access point). I use the following commands to get my laptop+accesspoint working: sudo brctl addbr br0 sudo brctl addif br0 eth0 sudo hostapd /etc/hostapd/hostapd.conf & sudo dhclient -d br0 & sudo ifconfig wlan0 192.168.1.15 netmask 255.255.255.0 up sudo brctl addif br0 wlan0 These commands enable me to access internet on my wireless clients and also on the laptop which is acting as wireless accesspoint. But if I reboot the wired router (without rebooting the laptop that is acting as accesspoint), Internet access on the laptop+accesspoint gets lost, but on wireless clients it works fine. Even I have not been able to figure out a command which will reset the laptop interfaces to default settings, so everytime the router reboots, I have to reboot the laptop too to get into default settings so that I can re-enter the above mentioned commands. My first question is How can I have my bridge+accesspoint up and running even-though the router reboots? And is there a command to set the interfaces to a default state? (ifdown -a doesn't work, after issuing the command the bridge still remained).

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  • How passively monitor for tcp packet loss? (Linux)

    - by nonot1
    How can I passively monitor the packet loss on TCP connections to/from my machine? Basically, I'd like a tool that sits in the background and watches TCP ack/nak/re-transmits to generate a report on which peer IP addresses "seem" to be experiencing heavy loss. Most questions like this that I find of SF suggest using tools like iperf. But, I need to monitor connections to/from a real application on my machine. Is this data just sitting there in the Linux TCP stack?

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  • Problem with network after malware attack

    - by Cruelio
    Im trying to help some friends with a Win XP machine. I got rid of the malware using Malware Bytes, and HiJackThis. But now they(I) have another problem. When the computer boot into Windows it seems fine. When I start Internet Explorer the browser window opens just fine, but nothing happens for at minute or two. After the two minutes of waiting, the network icon appears in the taskbar next to the clock, and then everything works. The computer is connected to the internet using a Ethernet adapter. I have looked at the Rvent Log and found an error from Perfnet with eventid 2004 <Provider Name="PerfNet" /> <EventID Qualifiers="49152">2004</EventID> <Level>2</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> What I have tried so far: In the device manager i have uninstalled the Ethernet adapter and installed it again. I have uninstalled and installed the Windows File and Printer Sharing service. I have verified that both server and workstation services are started. What should I do next?

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  • How to access remote network resource from local machine

    - by jerluc
    I just configured VPN access successfully so that I now can connect to my workstation at work from my personal Linux box at home. The problem is that all of my dev files for a server I'm locally running are on my personal box and cannot be transfered to my workstation (at least not in any timely manner over this connection given the amount of data, in addition to the many reconfigurations which would be required for the server to run even if I could somehow get the files across). So essentially, I am able to run my server locally on my personal computer, however, the data-sources required for the back-end are accessible only from within the office's network. But is there some way for me to somehow either access the data-sources directly through a VPN connection or even if I need to be a bit more convoluted by connecting via VPN to my workstation and then somehow connecting to the data-sources through my workstation to my personal computer? And here I could really care less about the speed of the connection from my server to the data-sources since they will probably only be fetched a few times every hour or so. Thanks! Sorry if this a stupid question and/or doesn't make any sense! (And sorry for anyone who read this at stackoverflow, I posted it in the wrong area.)

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  • Why my laptop sends ARP request to itself ?

    - by user58859
    I have just started to learn about protocols. While studying the packets in wireshark, I came across a ARP request sent by my machine to my own IP. Here is the details of the packet : No. Time Source Destination Protocol Info 15 1.463563 IntelCor_aa:aa:aa Broadcast ARP Who has 192.168.1.34? Tell 0.0.0.0 Frame 15: 42 bytes on wire (336 bits), 42 bytes captured (336 bits) Arrival Time: Jan 7, 2011 18:51:43.886089000 India Standard Time Epoch Time: 1294406503.886089000 seconds [Time delta from previous captured frame: 0.123389000 seconds] [Time delta from previous displayed frame: 0.123389000 seconds] [Time since reference or first frame: 1.463563000 seconds] Frame Number: 15 Frame Length: 42 bytes (336 bits) Capture Length: 42 bytes (336 bits) [Frame is marked: False] [Frame is ignored: False] [Protocols in frame: eth:arp] [Coloring Rule Name: ARP] [Coloring Rule String: arp] Ethernet II, Src: IntelCor_aa:aa:aa (aa:aa:aa:aa:aa:aa), Dst: Broadcast (ff:ff:ff:ff:ff:ff) Destination: Broadcast (ff:ff:ff:ff:ff:ff) Address: Broadcast (ff:ff:ff:ff:ff:ff) .... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast) .... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the factory default) Source: IntelCor_aa:aa:aa (aa:aa:aa:aa:aa:aa) Address: IntelCor_aa:aa:aa (aa:aa:aa:aa:aa:aa) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) Type: ARP (0x0806) Address Resolution Protocol (request) Hardware type: Ethernet (0x0001) Protocol type: IP (0x0800) Hardware size: 6 Protocol size: 4 Opcode: request (0x0001) [Is gratuitous: False] Sender MAC address: IntelCor_aa:aa:aa (aa:aa:aa:aa:aa:aa) Sender IP address: 0.0.0.0 (0.0.0.0) Target MAC address: 00:00:00_00:00:00 (00:00:00:00:00:00) Target IP address: 192.168.1.34 (192.168.1.34) Here the sender's mac address is mine(Here I have hiden my mac address). target IP is mine. Why my machine is sending ARP request to itself? I found 3 packets of this type. There was no ARP reply for these packets. Can anybody explain me why it is? (My operating system is windows-7. I am directly connected to a wifi modem. I got these packets as soon as I started my connection.) I want one suggestion also. many places I read that RFC's are enough for study about protocols. I studied the RFC 826 on ARP. I personally feel that is not enough at all. Any suggestion regarding this? Is there more then 1 RFC for a protocol? I want to study about the protocols in very detail. Can anybody guide me for this? Thanks in advance.

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  • Windows Server Shares web interface?

    - by Lazlow
    At work and home, I use Server 2003 with Windows Shares. We also have a couple of Netgear ReadyNAS appliances at work, managed via the web interface. Is there a built-in Web Interface for managing Shares, or a free one available - for use in Server 2003 (or 2008)? The reason I ask is that it would be good to manage the Shares via the Web, rather then RDP onto the Server each time - and would allow other users to treat it as a NAS.

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  • AFP / Apple Filling Protocol aka Netatalk access over Internet

    - by PJJ
    I got a simple cloud server and thought it would be nice to have mac native afp Volumes accesss. Installed Netatalk and this seems to work pretty nice. No sensitive data or something but I don't like to wake up someday and have my www docs rm-rfed by some kid h4x0r. Q1: Is afp encrypted? Q2: How can I make it (semi)secure? Q3: Does VPN makes sense for this? Q4: What would you do to get afp working over net? Opening any service meant for Lan only is a basic flaw, i know - but me be ignorant about it. According to Apple Dev only the authentication is encrypted or am I mssing something?

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  • Temp files created in every folder in Windows Server 2003

    - by i.h4d35
    So we have some folders which are shared over the AD Domain (Windows Server 2003). It was just noticed that in 2 of those folders (which contain only Excel and Word files), whenever a file is opened and closed, the temp file which was opened corresponding to that file still remains. Apparently, this's been going on for the past couple of years (which has led to an insane amount of temp files in each folder/subfolder under those shared folders). These shared folders are under the D:drive and not C: drive. There is only one group (containing 2 users) who access the said folders. I cannot understand if this has to do with the settings/permissions for the User/Group/Individual Client machine. For now, I have manually deleted all the temp files from each folder/subfolder. While this is not critical at the moment, I'd still like to clear this up. Also, it takes an additional fraction of a second to open folders that contains more than 10,000 temp files. Thanks in advance.

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  • HP DL380 using HP NC522SFP NIC shows supported link modes: not reported

    - by MikeS
    When using ethtool on this NIC, the supported link modes show "not reported". Any idea why this is the case? Settings for eth0: Supported ports: [ FIBRE ] Supported link modes: Not reported Supported pause frame use: Symmetric Supports auto-negotiation: No Advertised link modes: Not reported Advertised pause frame use: No Advertised auto-negotiation: No Speed: 10000Mb/s Duplex: Full Port: FIBRE PHYAD: 1 Transceiver: external Auto-negotiation: off Supports Wake-on: g Wake-on: g Current message level: 0x00002000 (8192) hw Link detected: yes

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  • How can I enable anonymous access to a Samba share under ADS security mode?

    - by hemp
    I'm trying to enable anonymous access to a single service in my Samba config. Authorized user access is working perfectly, but when I attempt a no-password connection, I get this message: Anonymous login successful Domain=[...] OS=[Unix] Server=[Samba 3.3.8-0.51.el5] tree connect failed: NT_STATUS_LOGON_FAILURE The message log shows this error: ... smbd[21262]: [2010/05/24 21:26:39, 0] smbd/service.c:make_connection_snum(1004) ... smbd[21262]: Can't become connected user! The smb.conf is configured thusly: [global] security = ads obey pam restrictions = Yes winbind enum users = Yes winbind enum groups = Yes winbind use default domain = true valid users = "@domain admins", "@domain users" guest account = nobody map to guest = Bad User [evilshare] path = /evil/share guest ok = yes read only = No browseable = No Given that I have 'map to guest = Bad User' and 'guest ok' specified, I don't understand why it is trying to "become connected user". Should it not be trying to "become guest user"?

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  • Approach for monitoring internet backbone traffic volume

    - by Greg Harman
    I'm interested in getting a picture of relative volume across different internet backbones. In particular, I'd like to see how traffic volume over a given route differs over the course of a day or from one day to the next. InternetTrafficReport.com is the closest approximation to this that I've found online, and their approach is to test ping times to a number of key routers from several geographically-dispersed servers. This sounds like one straightforward way to measure, but I don't have several geographically-dispersed servers. Is there a different approach for sampling this type of information from a single server?

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