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• How to keep TightVNC client on Windows XP alive when connected to OS X?

  - by craibuc

  I'm using TightVNC on my Windows XP workstations to connect to a remote OS X box (10.5.x) using OS X's VNC support. I've noticed that the TightVNC will become unresponsive after a period of inactivity. Is this a common issue? Restarting TightVNC solves the problem, but can be a bit annoying. Is there a solution to this? I don't suppose copy & paste between the two systems can be made to work?

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• Bind dns server in Solaris 10 and win xp clients

  - by stevecomptech

  Hi, Added this in zone db file, i am running solaris 10 _ldap._tcp.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.mydomain.com. SRV 0 0 88 dc.mydomain.com. _ldap._tcp.dc._msdcs.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.dc._msdcs.mydomain.com. SRV 0 0 88 host.mydomain.com. Now i get this error when i try to join win xp to the domain The query was for the SRV record for _ldap._tcp.dc._msdcs.mydomain.com The following domain controllers were identified by the query: host.mydomain.com Common causes of this error include: Host (A) records that map the name of the domain controller to its IP addresses are missing or contain incorrect addresses. Domain controllers registered in DNS are not connected to the network or are not running. What do i need to change in order my win xp join the domain

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• How to reference a git repository?

  - by Anonymous

  What should the actual path to a git repository 'file' be? It's common practise when cloning from github to do something like: git clone https://[email protected]/repo.git And I'm used to that. If I init a repo on my local machine using git init, what is the 'git file' for me to reference? I'm trying tot setup Capifony with a Symfony2 project and need to set the repository path. Specifying the folder of the repository isn't working. Is there a .git file for each repository I should be referencing?

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• Windows and domain suffix addition

  - by grawity

  I have a DNS domain and host it on my own server. My desktop PC (Windows XP) is configured to have mydomain.tld as its primary DNS suffix. Now, when the system tries to resolve any domain - stackoverflow.com, for example - it tries with the suffix added first, even if the name has periods in it. In other words, it tries stackoverflow.com.mydomain.tld. before stackoverflow.com.. Is this valid according to DNS standards and common sense? Is there anything I can do to prevent it, other than removing the prefix completely? (I still want it to be appended to single-component hostnames. Currently I have two prefixes . and mydomain.tld. configured, but it isn't very fast when resolving foohost.)

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• Drupal 7 on Windows - File Module Problems

  - by TimothyP

  Installed Drupal 7 using the Web Platform installer on Windows 2008 For some reason, the file module, when you upload a file, uses the first few letters of the filename as the unique key to store in the database, which of course causes problems very fast. I'm wondering does anybody have a workaround for this? An AJAX HTTP request terminated abnormally. Debugging information follows. Path: /file/ajax/field_file/und/0/form-EBMatHzV5cZXcWvXJtdADSdyw7Id9-GIpFM_NCJg_a4 StatusText: n/a ResponseText: Error message PDOException: SQLSTATE[23000]: [Microsoft][SQL Server Native Client 10.0][SQL Server]Cannot insert duplicate key row in object 'dbo.file_managed' with unique index 'uri_unique'. in drupal_write_record() (line 6776 of ..........\includes\common.inc). Error The website encountered an unexpected error. Please try again later. ReadyState: undefined (PS: I hope superuser is the right place to ask)

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• How small can/should I make my partitions?

  - by Pureferret

  My machine is currently split into 3 user partitions (plus however many Windows and Linux have decided to slyly create) Which are C: Windows 7, D: Data, and E(?): Ubuntu. I'm considering wiping my Windows 7 Install (stupid Skyrim not installing) and restructuring the way my machine operates. I want the partitions for the Windows and Linux install to be as small as possible while still able to function well, and be able to install games on my Windows C: drive. I then want to link from both Win7 and Linux drives to the middle D drive so that the in built My Documents (and etc on windows) folder and my Home folder (linux) share a common location, rather than my current situation which is 3 separate file locations. Something like this: I have 1 TB to play with and I want to know the 'best' sizes to make these partitions when I reinstall Windows (which I need to do anyway) and re-jig everything.

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• How are suspected DoS attacks handled by webservers?

  - by Jan Kuboschek

  I rent a server somewhere out in Canada or so that I'm using to host a website of mine. That website has close to 400,000 pages that I wanted to index today. For that, I wrote a crawler a while back (see JCrawler on Stackoverflow.com). Now, I'm greedy and didn't want it to take too long so I ran multiple threads resulting in some 60+ requests per second from my IP. A couple minutes later, my server locked me out. I can still FTP into it, but I can't HTTP it. As server administrator or user, do you have any idea how servers usually handle these situations? Is it common to place a permanent or temporary ban on the IP or what is typically done? Naturally, I'll re-run my software with fewer requests once I'm back on.

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• Suitable companion monitors for HP LP3065 30" primary monitor

  - by Bittercoder

  I have an HP LP3065 30" monitor - now I want to add a couple of companion screens to either side of it - I've heard to people suggesting 21" monitors in portrait mode - but it seems difficult to find a suitable panel these day, as 22" wide-screen monitors have become common, and I can't seem to find anything with a suitable 1600 pixel width. Can anyone recommend a suitable monitor, and suggest what criteria are best for picking a suitable monitor - what's important to consider - I'm thinking things like: Exact resolution match? Viewing angle? Small/thin bezel?

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• What to do with old hard drives?

  - by caliban

  I have over 100+ old hard drives, ranging from 100MB Quantums to 200GB WDs, most of them PATA, some SATA. Most still working. The squirrel mentality runs in my family - hoard everything, discard nothing. Thus, and this is a relevant question - any suggestions on how to put these drives to use (anything) instead of them just being deadweights and space takers around the office? Hopeful objectives and suggestions to keep in mind when you post an answer : Should showcase your geekiness, or plain fun, or serve a social purpose, or benefit the community. You do not need to limit your answer to only one hard drive - if your project needs all 100++, bring it on! Your answer need not be limited to one project per hard drive - if one hard drive can be used for multiple projects, bring it on! If additional accessories need be purchased, make sure they are common. Don't tell me to get a moon rock or something. The projects you suggested should serve a utility, and not just for decoration purposes.

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• Waiting for a daemontools service to stop

  - by also

  I'm running a service under daemontools that take several seconds to stop when sent the TERM signal. I need to stop it in a script, and then wait for the process to stop before continuing to take a LVM snapshot or restarting the service. Does daemontools provide a way to do this? If not, what's the best way? I was thinking of sleeping while svcok exits with 0, but it seems like this should be a common problem with an easier solution. Thoughts?

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• A space-efficient filesystem for grow-as-needed virtual disks ?

  - by Steve Schnepp

  A common practice is to use non-preallocated virtual disks. Since they only grow as needed, it makes them perfect for fast backup, overallocation and creation speed. Since file systems are usually based on physical disks they have the tendency to use the whole area available1 in order to increase the speed2 or reliability3. I'm searching a filesystem that does the exact opposite : try to touch the minimum blocks need by an aggressive block reuse. I would happily trade some performance for space usage. There is already a similar question, but it is rather general. I have very specific goal : space-efficiency. 1. Like page caching uses all the free physical memory 2. Canonical example : online defragmentation 3. Canonical example : snapshotting

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• How to forward http traffic through a specific network adapter.

  - by user18129

  i have the following scenario. Two laptops are connected via a router through the Ethernet ports. These two computers need to be able to communicate together. One computer also needs to access the internet through a different adapter (i.e. we will taking these two laptops two various sites where by the most common type of internet access will be wireless).In isolation all of the various adapters work fine (i.e. the internal network works fine, and the wireless connects to the internet). However,we try to turn on all of the adapters at the same time,the following occurs: If we bridge the two network connections together on the "Server" -The internet connection doesn't work through the wireless If we don't bridge the connections The internet connections don't work It seems like http traffic is trying to be sent through the Ethernet adapter (which of course is not connected to an internet connection). How can we solve this?

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• Which ports for IPSEC/LT2P?

  - by Matt

  I have a firewall/router (not doing NAT). I've googled and seen conflicting answers. It seems UDP 500 is the common one. But the others are confusing. 1701, 4500. And some say I need to also allow gre 50, or 47, or 50 & 51. Ok, which ports are the correct ones for IPSec/L2TP to work in a routed environment without NAT? i.e. I want to use the built in windows client to connect to a VPN behind this router/firewall.

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• Freelance for moderately complex admin support

  - by ongraphs

  Mailing lists and question/answers works great for problems that are independently encountered by several people. But sometimes we (as in experienced amateurs) run into problems that aren't so common, nobody has blogged about it and experts advice not readily available. For IT-admin related stuff can someone please recommend how can amateurs pay experts and get hands on advice. The kinds of problems I am talking about are like setting up nxserver or openvpn on freeBSD box. The install/config is not so simple, the documentation not easy for non-it professionals. Therefore getting step by step advice would be quite helpful. Thanks sandeep

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• Nginx Tornado Combination Causing 502 Bad Gateway Errors

  - by PlaidFan

  We are facing a problem with inconsistent 502 errors and tracking down the reasons has been a very frustrating exercise. We can reproduce the problem by sending several simultaneous requests quickly. The problem is that several is only in the range of 10 to 20 within a 5 seconds (not a typo). So clearly this type of load should be handled easily. We really like the Nginx + Tornado approach but are considering going to a more traditional (e.g. threading) approach because this problem has been very difficult to solve. I was wondering if you a) know how to fix this issue and b) how we can tracked down the culprit(s). The log files simply identify there being a connection refused. We have the same problem as this post: How do I debug a HTTP 502 error? But there is no answer provided on how to solve the problem so I'm hoping you can help because this may be a common issue with this type of setup. Thanks in advance, Paul

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• Moving windows using keyboard...faster?

  - by Alois Mahdal

  I like using keyboard shortcuts because it's faster as it does not force me to move my hands off the keyboard. In Windows I can use them to move windows around desktop: Press Alt+Space to open common windows menu Press M to choose "Move" command Navigate window position by cursor keys Confirm new position with Enter Additionally, to achieve better accuracy, I can hold Ctrl while navigating. Now the problem is that the normal "step" when moving is about 20px, and my desktop is quite large, so "walking" all the way across takes quite a long time. This kind of defeats the purpose of using keyboard for these tasks. Is it possible to change size of this step so that takes less steps to walk the same distance? (I imagine a hidden setting in Windows registry...?) I tried holding Alt while navigating, but it does not seem to have influence on speed.

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• Binding services to localhost and using SSH tunnels - can requests be forged?

  - by Martin

  Given a typical webserver, with Apache2, common PHP scripts and a DNS server, would it be sufficient from a security perspective to bind administration interfaces like phpmyadmin to localhost and access it via SSH tunnels? Or could somebody, who knew eg. that phpmyadmin (or any other commonly availible script) is listening at a certain port on localhost easily forge requests that would be executed if no other authentication was present? In other words: could somebody from somewhere in the internet easily forge a request, so that the webserver would accept it, thinking it originated from 127.0.0.1 if the server is listening on 127.0.0.1 only? If there were a risk, could it be somehow dealt with on a lower level than the application, eg. by using iptables? The idea being, that if someone found a weakness in a php script or apache, the network would still block this request because it did not arrive via a SSH-tunnel?

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• CentOS 5.5 Package documentation

  - by fthinker

  Usually when I install a common package like PostgreSQL or MySQL or Python etc using Yum it installs the files held within those packages into locations specific to CentOS itself. It may also install scripts specific to CentOS only. These paths may not be the same as the defaults found within the source distributions found on the PostgreSQL, MySQL, Python etc project websites and the scripts are usually unique to CentOS. Recently when I installed PostgreSQL under Ubuntu I found some very nice distribution specific information about how the install was organized and how to use the package in a Ubuntu way. I found this information in /usr/share/doc/ Is there any such information included within CentOS?

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• Duplicate Name Exists error from virtual PC with NAT network configuration

  - by Phred

  Whenever I change the network configuration to NAT for a virtual machine running under Virtual PC 2007, I get "A duplicate name exists on the network." error. There is no other machine on my network with this name and running the VM in any other network configuration doesn't cause this error. This seems to be a common problem with Virtual PC 2007 based on a google search but no-one seems to have a solution to it. So far, I've discovered that turning off NETBIOS over TCP causes the problem to go away but I need to join this VM to a domain and you can't do that if NETBIOS over TCP is turned off.

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• Why does Exim puts emails on hold if there are frozen messages in the queue?

  - by user51932

  I've a CentOS with CPanel server working as a SMTP server, which currently uses 20 different hostnames and IP addresses to deliver email for an email newsletter service. However, it's extremely slow in sending emails. It's sending like 10 emails per minute, which I check by running the "exim -bpc" command. What could be affecting this? One thing I'm supposing, is that there are frozen messages in the queue, which are slowing down the sending until they're sent out, and are putting new messages on hold. What are the most common reasons a message can get frozen? Also, would it be more efficient to use 20 different small VPSs to send out email rather than use one large VPS with the 20 different hostnames and IPs in it?

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• Tool to test a user account and password (test login)

  - by TheCleaner

  Yeah, I can fire up a VM or remote into something and try the password...I know...but is there a tool or script that will simulate a login just enough to confirm or deny that the password is correct? Scenario: A server service account's password is "forgotten"...but we think we know what it is. I'd like to pass the credentials to something and have it kick back with "correct password" or "incorrect password". I even thought about a drive mapping script with that user account and password being passed to see if it mapped the drive successfully or not but got lost in the logic of making it work correctly...something like: -Script asks for username via msgbox -script asks for password via msgbox -script tries to map a drive to a common share that everyone has access to -script unmaps drive if successful -script returns popup msgbox stating "Correct Password" or else "Incorrect Password" Any help is appreciated...you'd think this would be a rare occurrence not requiring a tool to support it but...well....

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• Restricting output to only allow localhost using iptables

  - by Dave Forgac

  I would like to restrict outbound traffic to only localhost using iptables. I already have a default DROP policy on OUTPUT and a rule REJECTing all traffic. I need to add a rule above that in the OUTPUT chain. I have seen a couple different examples for this type of rule, the most common being: -A OUTPUT -o lo -j ACCEPT and -A OUTPUT -o lo -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT Is there any reason to use the latter rather than the former? Can packets on lo have an address other than 127.0.0.1?

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• Sharing / replicating EBS across AWS nodes

  - by skrat

  I would like to use single EBS storage across multiple EC2 nodes (web/app servers). I've read some articles on snapshot sharing, but that doesn't suit well for what we need. We use filesystem for storing DB record attachments, so if one such attachment gets created, we need it to be immediately available to all nodes (to serve). So far only NFS seem to be viable, but it's a pain to configure and maintain. Another option could be storing those attachments on S3 instead, but that would cut us of doing any analysis on that data. This must be quite common problem when scaling in AWS, what solutions are there?

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• Getting error while starting tomcat?

  - by ram

  For my Tomcat installation process case is 1. cd /home/mpatil/Downloads/ 2. tar zxvf apache-tomcat-6.0.37.tar.gz 3. cd apache-tomcat-6.0.37/bin 4. ./startup.sh 5. tail -f /home/mpatil/Downloads/apache-tomcat-6.0.37/logs/catalina.out for `5` command results : [root@localhost bin]# tail -f /home/mpatil/Downloads/apache-tomcat-6.0.37/logs/catalina.out Nov 08, 2013 12:04:04 PM org.apache.catalina.startup.HostConfig deployDirectory INFO: Deploying web application directory docs Nov 08, 2013 12:04:04 PM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Nov 08, 2013 12:04:04 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Nov 08, 2013 12:04:04 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/115 config=null Nov 08, 2013 12:04:04 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 3036 ms and i tried in browser like http://locahost:8080/ nothing comming why.whats the wrong in my command or i did any wrong in my commands pls tel me

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• Is it possible to have tab completion of drop-down lists in web pages in Firefox?

  - by Nick Booker

  Does anyone know of a Firefox plugin that would enable tab-completion (or some other key sequence like Alt-L) of items in drop-down lists in web forms? e.g. ou<TAB>in<TAB>s<TAB> for 'OurCompany - Internal Support' Vimperator's hints mode makes it very ergonomic to focus the drop-down list with a key sequence like f13 but the keyboard interface to the drop-down list still sucks. I very frequently have to pick items from a very long list with very long common prefixes among the entries (e.g. 30-40 starting with OurCompany -), which renders both the built-in keyboard interface and the mouse pretty slow and unergonomic. I basically want readline support for filling webforms!

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