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• Samba 'include' a per user config script

  - by cb0

  It is possible to use the include = /somepath/%u.smb.conf in the global section to call a script /somepath/cb0.smb.conf if the user cb0 connects to the samba server. Unfortunately this does not wotk for me because testparm alway gives me Can't find include file /somepath/.smb.conf When I connect to the server I can enter a username and pass but it alway rejects the connection. I'm using Samba Version 3.2.5 How can I achieve to load a custom user script depending on the user that is connecting ?

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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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• 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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• 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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• Access Denied on Some Subfolders/Files Within a Share

  - by Tim

  First thing this morning, I find that users on one of our share drives are all getting "access denied". I tried the same drive and also received "access denied" as a Domain Admin. Previous to this, all specified users and admins could get access. I checked share permissions I checked NTFS permissions I temporarily made both types of permissions read/write to "Everyone" -- This worked for one user It turns out that this is occurring for only some files/folders. When I try to manually alter the share of that single share, it can't be shared, access denied. xcacls also gets access denied rebooted the server (not a big deal - this is a smallish company). Does anybody have any insight, my google-fu is coming up blank. Thanks. EDIT: More info, I just ran AccessEnum. There were a lot of "access denied", but I noticed the pattern that all of the access denied had a parent with an owner of "???". When I look at the properties, the "Unable to display owner" message is in the box and I can only make my user account the owner. I can then share the individual file/folder, but it doesn't seem to propogate down to subfolders/files.

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• Service monitoring service, which I can ping instead of getting pinged

  - by Jack Juiceson

  I'm looking for a service, which can send me an alert if my program didn't ping(some http request) in X minutes. Pretty much like any service monitoring, but instead of service pinging my server I want, my program to ping the monitor service. This is because our program, can't get incoming connections, yet we need to monitor it's alive. And easiest for us will be to have a service we can ping. Thank you, - Jack

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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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• 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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• 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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• 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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• Play system sounds from one computer through another computer's speakers?

  - by kevinconner

  I have a Mac and a Windows PC at work. I use both at the same time with Synergy and SynergyKM, which is a great setup for me. The Mac has built-in speakers and the PC has a sound card, but no speakers. I don't want to get speakers for use at work; instead I'd rather just have all sounds from both computers play through the Mac's speakers. Is there some sort of audio service I can run on each computer to accomplish that? I would want: System alert sounds, like you configure in the Control Panel Sounds from videos in a web browser, including from Flash

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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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• How to set up a wireless AP with a linux box and SOCKS proxy

  - by user50455

  I've got: (1) Linux box (Arch linux to be precise, but that doesn't really matter) (2) Ethernet connection on it (say, eth0) (3) Socks proxy on a remote site (say, remote :port), which can be accessed through (2) (4) Wireless card on local linux box (say, eth1) So, the task is: create a wireless access point using (4) on local site (1) in such a way that all connections from it will go through proxy (3). E.g., when one simply connects to that AP (well, there should be DHCP or something for that) and goes to serverfault.com, all the traffic goes through that SOCKS proxy. I'm just asking for the digging direction and some references, not step-by-step tutorial. Thanks in advance

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• Accessing Windows 7 Printer from Ubuntu Linux via LPR/LPD or Samba

  - by nitbuntu

  Hi, I'm having difficulty printing from my Linux (Ubuntu 10.04) based PC to a printer connected to a Windows 7 machine. I was trying to connect using Samba (version 3.5.6) but this always brings up an authentication screen which never accepts any password I use. So I read somewhere that an alternative is to access the Windows printer via LPR/LPD. I added an LPR/LPD printer in Windows 7, but even within Windows 7, I am not able to print as the print que monitor shows as 'printer busy'. The printer in question is an Epson Stylus DX7400 and works fine when using the standard USB ports....but doesn't when I use with the LPR/LPD ports. I even opened up the TCP/IP port 515 in my McAfee firewall without any success. Any help with this would be highly appreciated. Additionally, does anyone have any idea how I can get Samba working for me?

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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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• Write permission when mounting Windows shares from Ubuntu

  - by Ola Tuvesson

  I think I'm close to having my dev environment set up exactly the way I want, but one final snag remains. I'm running VirtualBox on a Windows 7 64bit host, with my dev enviroment inside a Ubuntu 12.04 guest. I want to keep the files for my projects on the host filesystem - partly so I can access them when the Ubuntu guest is not running, but also so I can use Tortoise and other Windows based tools (cough Photoshop), and it also eases my backup scheme somewhat. So I've got a folder "Rails" on my NTFS drive, which I've shared from the host with a user specifically created for the Ubuntu guest. The mount point has been set up and an entry added to fstab (cifs), using a credentials file and the options iocharset=utf8,file_mode=0777,dir_mode=07??77 This mounts fine and my Ubuntu user has both read and write permissions to the contents, but when I try to start my Rails app I get permission errors on any files the app needs to write to (e.g. the log file). What gives?

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• Using local proxy to specify used NIC on Windows 7?

  - by Nico

  I'm running Windows 7 and have 2 NIC installed, both are connected to the Internet (nic#1 LTE, nic#2 DSL). Windows 7 will only allow me to specify a binding order and a metric on which interface to chose but i can't specify this on an application level. My Idea was to use a local proxy server and use the proxy server whenever i want to use nic#2. I tried wingate and free proxy, both applications will let me chose the interface i want to use but this setting seems to have no effect? This is how i configured the applications: http://imageshack.us/photo/my-images/69/freeproxysettings.jpg/ http://imageshack.us/photo/my-images/811/wingateproxysettings.jpg/ Is what i'm trying to do in anyway possible?

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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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• How is the MTU is 65535 in UDP but ethernet does not allow frame size more than 1500 bytes

  - by nikku

  I am using a fast ethernet of 100 Mbps, whose frame size is less than 1500 bytes (1472 bytes for payload as per my textbook). In that, I was able to send and receive a UDP packet of message size 65507 bytes, which means the packet size was 65507 + 20 (IP Header) + 8 (UDP Header) = 65535. If the frame's payload size itself is maximum of 1472 bytes (as per my textbook), how can the packet size of IP be greater than that which here is 65535? I used sender code as char buffer[100000]; for (int i = 1; i < 100000; i++) { int len = send (socket_id, buffer, i); printf("%d\n", len); } Receiver code as while (len = recv (socket_id, buffer, 100000)) { printf("%d\n". len); } I observed that send returns -1 on i > 65507 and recv prints or receives a packet of maximum of length 65507.

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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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• How to block & unBlock gMail chat as an system administrator

  - by sagar kothari

  I would like to know, How to block & unblock gmail chat as an system administrator. Thanks in advance for sharing your knowledge.

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• Letting users make their own dns changes? Any software available to manage this tricky situation?

  - by Jaredk

  I currently waste a lot of time making dns changes for my organization. DDNS of course helps for workstations, but we still have a few thousand unique servers with still more applications needing cname records that DHCP/DDNS alone will not support, so someone needs to make updates, but I'd like to see sysadmins make their own dns updates for their machines. I'm currently working on extending our asset database to support this functionality, but I hold out hope that there are COTS solutions available.

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• Free software for backing up an attached network drive

  - by Richard

  My wireless router comes with a USB connector which allows me to plug an external hard drive in and it'll act as a Network Attached Storage. The problem is that I want to backup this hard-drive to the external drive of another computer so that if the NAS drive fails, I don't lose everything. However, Windows 7 Backup refuses to include the NAS as a location to backup. I can't fool it by mapping it to a drive letter either. Google presents lots of pages on how to backup files to a NAS, but not the other way around. Can anyone advise me on free software which can do incremental backups of a NAS drive to an external drive attached the computer it is running on? I'm aware of this question but the top answers have one or more of the following issues: They aren't free. The free version cannot backup a NAS. They cannot do incremental backups. They're just a script and therefore have limited other functionality (eg. disk space management, scheduling, compression, etc.etc.)

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• wifi routers and concurrent devices

  - by Joelio

  We have a Linksys WRT54G WiFi router in our office which was working great when we had 5-6 folks. Now on peak days we have 10-15 people, each with a computer, smartphone, etc, and an ooma VOIP device. On average 1-2 times a day I need to go hard reboot the router, and sometimes the border router (Cox-supplied device). I assume this is just because the router cant handle this many concurrent users. So my question is can these consumer routers handle this kind of load? If not, would adding more devices solve the problem, and how close proximity can I put 2 routers without having interference problems (our office area is not that big physically)?

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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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