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• Using Credentials with network scanners

  - by grossmae

  I'm testing out both Tenable's Nessus scanner as well as eEye's Retina for scanning network devices. I am trying to supply credentials to get deeper, more accurate results, however there seems to be no difference in the results whether I supply the credentials or not. I've read the documentation and it seems like I've tried all the logical settings in the Credential options. I've submit along with usernames and passwords for many different accounts and types of accounts (both SSH Credentials and Web Application Credentials) on the devices as well as their respective domain names (when applicable). Is there possibly a good test for either (or both) scanners to tell where these credentials are being provided (if at all) and if any of them are successfully getting authentication?

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• Jumbo Frames, ISCSI and ESXi

  - by vlannoob

  I have enabled Jumbo Frames (9000) in ESXi for all my vmNICs, vmKernels, vSwitches, iSCSI Bindings etc - basically anywhere in ESXi where it has an MTU settings I have put 9000 in it. The ports on the switches (Dell PowerConnects) are all set for Jumbo Frames. I have a Dell MD3200i with 2 controllers, each with 4 ports for iSCSI. Each of these ports is set to Jumbo Frames (9000) as well. So now the questions: Do I need to log into each Windows Server VM I am running and delve into the NIC properties and manually set it to Jumbo Frames in the NIC properties in the device Manager as well? Whats the best way of testing that Jumbo Frames are indeed working as intended?

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• Behaviour of disabling "Allow non-administrators to receive notifications" GPO

  - by Jaymz

  Hi everyone, As the title suggests, I'm trying to figure out the specific behaviour of the following GPO when disabled: Administrative Templates Windows Components Allow non-administrators to receive update notifications We've just started using WSUS, and have added a few machines for testing. At the moment, this is set to Enabled. The problem with this setting is it seems to allow users to opt out of certain updates if they deselect the checkbox after hitting custom install. My main concern with disabling this setting is this: Does it stop non-admins from getting the installs deployed to them? My guess would be that it will just install them silently at the set scheduled time, suppressing any prompts and ensuring they don't get the opportunity to cancel them (this is what I want). My worry is that non-admin users will never get updates pushed to them unless an admin goes and logs on to their machine (not what I want, and seems like a silly situation to be in). Thanks in advance, Jaymz.

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• Tunneling HTTPS traffic via a PUTTY/SSL tunnel with SOCKS

  - by ripper234

  I have configured a SOCKS ssh tunnel to a remote proxy, and set my Firefox to use localhost:<port> as a SOCKS proxy. My intention is to tunnel outgoing HTTP/S connections from my machine via a specific 3rd party server I own (on AWS). In my testing, HTTP UTLs are forwarded properly (e.g. when I access http://jsonip.com/ from my computer I do get the server's IP) However, whenever I try to reach an HTTPS address, I get this error: The proxy server is refusing connections How do I debug/fix it? My PUTTY tunnel config is simply (some random source port number + dynamic checked): P.S. I'm aware I might need to manually accept SSL certificates. The reason I'm doing this is to resolve problems using gmail as an outbound SMTP service.

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• NTFS write speed really slow (<15MB/s)

  - by Zulakis

  I got a new Seagate 4TB harddrive formatted with ntfs using parted /dev/sda > mklabel gpt > mkpart pri 1 -1 mkfs.ntfs /dev/sda1 When copying files or testing writespeed with dd, the max writespeed I can get is about 12MB/s. The harddrive should be capable of atleast 100MB/s. top shows high cpu usage for the mount.ntfs process. The system has a AMD dualcore. This is the output of parted /dev/sda unit s print: Model: ATA ST4000DM000-1F21 (scsi) Disk /dev/sda: 7814037168s Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 2048s 7814035455s 7814033408s pri The used kernel is 3.5.0-23-generic. The ntfs-3g versions I tried are ntfs-3g 2012.1.15AR.1 (ubuntu 12.04 default) and the newest version ntfs-3g 2013.1.13AR.2. When formatted with ext4 I get good write speeds with about 140MB/s. How can I fix the writespeed?

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• Squid proxy server not forwarding traffic

  - by DilbertDave

  I'm trying to set up a web filtering system (dans guardian) on my home network but am failing at the first hurdle - configuring the Squid Proxy server. No matter what I do I cannot seem to configure it properly and I just receive the 'Requested URL could not be received' error page. If I remove the proxy setting on the browser everything works normally. Ultimately I want to run this on something like a Raspberry Pi but at the moment I'm testing with a virtual machine (although efforts with a netbook were equally unsuccessful). The VM has a clean installation of Linux Mint 15 and I've installed squid via apt-get. I've followed numerous walkthroughs but this on (https://help.ubuntu.com/lts/serverguide/squid.html) pretty much sums up the process I've been taking. I'm obviously missing something but cannot figure it out - any assistance appreciated.

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• What constitutes valid justification for more IP addresses?

  - by David

  I host a small website with a well known VPS service. They provided me with one IPv4 address upon registering and said additional addresses would require justification. I requested one additional IPv4 address so as to have one for a production environment and one for a testing/QA environment. They said this was unnecessary as I could just use alternative TCP ports for the test environment. I can live with using a non-standard port for non-production hosting, but it got me thinking, what would be valid justification? (I asked them and they didn't want to answer). Is there an industry standard for what counts as "valid" justification for additional IPv4 addresses?

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• Force Windows to cache executables without running them?

  - by Josh Einstein

  Is there a way to force Windows to pre-load certain EXE/DLL binaries into its prefetch/superfetch cache as if they had been executed? I have a particular application that loads pretty slowly on first run but if it's "warm" (recently executed) it starts pretty quickly. I'd like to prime the cache early in the background before the application is needed. But since it shows a UI, I'm looking for a way to do this silently. So simply launching the application it isn't ideal. Thanks you in advance. Prompted by David's suggestion in the comments, I wrote a PowerShell script to memory map the files, seek to the end, and close them. I haven't done any controlled tests yet and it could just be my imagination, but Sublime Text (the application in question) appeared to load much more quickly this time around and I haven't used it for several hours.

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• Minimalistic flatfile-based "wall" PHP app with authentication and RSS?

  - by Nicolas Raoul

  I am looking for an open-source minimalistic "message board" PHP software. Not a forum, more something like one simple facebook wall. The only thing a user can do is post a new message. With RSS, and able to run on flat files (no database) with Apache+PHP Authentication based on a configuration file, no management UI needed. For now I use this software, but it lacks RSS: http://nrw.free.fr/data/projects/pano/demo/index.php?pano=ifc Anyone knows a software that matches my description? Thanks! Usage: communication between my family's 5 members living on different continents.

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• Windows 7 - You don't have permissions to save in this folder

  - by James

  Huh? I'm getting this message - "You don't have permissions to save in this folder" - even though I am the only user on this machine, and administrator. How can I set permissions for myself to do everything, everywhere (including saving deleting etc)? Thanks. Edit: Sorry, forgot to say which folder it was. It is a folder in Program Files, where I save my PHP files for local testing. Sorry if Im a bit daft with all this, but I've upgraded straight from XP to 7, and having never used vista, I'm used to being allowed to have full control.

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• Lenovo Thinkpad SL500 and Keyboard Flex problem.

  - by nitbuntu

  I was testing a Thinkpad SL500 system at a local store and found the flexing of the keyboard to be quite a deal breaker for me; it was flexing quite prominently with very little pressure applied. I find it hard to believe that a business grade laptop should have this problem as a consumer grade laptop that I own (Dell Inspiron 1526) has very little keyboard flex and one needs to apply a lot of pressure to notice it. Is this a common issue with the SL500 or SL510 models of Thinkpad laptops? What about the Thinkpad R500, does this also suffer from similar issues?

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• windows 7 is not working with Ubuntu 12.04

  - by Anand Soni

  I have one problem, I am unable to start windows 7 which is installed with Ubuntu 12.04 because I want to utilize all resource in diff. OS. Let me tell you the installation I have done. I have installed everything with USB because my CD ROM is damaged. 1) I have installed Windows 7 in c: then I have installed Ubuntu 12.04 in C: Now when I start my PC it shows list of OS first like -Ubuntu 12.04 -Windows 7 When I click on Windows 7 it do not starts and again shows the list of OS. I have also tried to reinstall the windows 7 using USB but it gives error of something UI or Boot configuration error. Even now Ubuntu 12.04 is also not reinstalling. Now what I want to do is install windows 7 and install ubuntu 12.04 in virtual box so that I can run both system as this is not working. But can't because I can't open Window 7 even can't format my drive. Please suggest something.

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• Is the hosts file ignored in windows if DNS Client service is running?

  - by Mnebuerquo

  I've seen a number of articles about how to edit the hosts file in Windows 7, but it's all about how to open notepad as administrator, not the actual behavior of the dns lookups afterward. I've read that the hosts file is ignored in XP SP2 if DNS Client service is running. I have tried this on my XP machine and it seems to be true. I can see how it is a security danger to have a hosts file that user programs could modify. If it could write to hosts, then any malware could spoof dns locally with minimal difficulty. I'm trying to use the hosts file for testing stuff on my local network without it going to the live site on the internet. At the same time I want to be able to use dns on the normal internet. Mostly though I just want to understand the rules on the newer windows systems. Thanks!

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• Best DSL hardware for ADSL Troubleshooting

  - by Jeff Sacksteder

  I have a situation where I need to make the best of a bad DSL situation. The CPE is a black box with no access to DSL diagnostics. My plan is to get some sort of DSL hardware that exposes link-layer state and gives me knobs to tweak. I'd like to be able to mitigate bufferbloat as much as I can while I'm at it. The obvious choice would seem to be a Sangoma card in a linux system. I have no way of knowing if that will do anything for me without testing it, however. I have no other access to WAN troubleshooting equipment. Are there any other options avail to me as a consumer?

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• web based source control management software [closed]

  - by tom smith

  hi. not sure if this is the right place, but hopefully someone might have thoughts on a solution/vendor. Starting to spec out a project that will require multiple (50-100) developers to be able to manipulate source files/scripts for a large scale project. The idea is to be able to have each app go through a dev/review/test process, where the users can select (or be assigned) the role they're going to have for the given app. I'm looking for web-based, version control, issue tracking, user roles/access, workflow functionality, etc... Ideally, the process will also allow for the reviewed/valid app to then be exported to a separate system for testing on the test server/environment. This can be hosted on our servers, or we can do the colo process. I've checked out Alassian/Collabnet, but any thoughts you can provide would me appreciated as well. thanks

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• Hyper-V CPU Utilization, Good Tools?

  - by yzorg

  I just learned a ton from this post: Host CPU% doesn't include child VM CPU%, specifically I learned that both the 'host OS' and 'child VM' are siblings within the HyperVisor layer. Are there good utilities for 'watching' the total CPU and other resource counters at the HyperVisor (hardware) layer? I know perfmon (watching special Hyper-V CPU counters) is the standard answer, but I've stayed away from perfmon for ad-hoc monitoring. Is there a good OSS or free tools to 'watch' the resource utilization as I create multiple new VMs running on the server? I'm a developer, so if there aren't any good UI tools to surface this data I'd consider creating one, but only if needed. P.S. My specific scenario is I'm creating new web, SQL and back-end server VMs for new Windows 8 Server and SQL 2012 (entire application stack). I need to monitor them for utilization and know when I need to grow beyond 1 host (I'll need to split the VMs into separate hosts as I hit hardware limits of the 1st host, and diagnose problems).

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• Facing gestures in Linux mint Chrome Browser

  - by aravind.udayashankara

  I am using Linux mint OS since an Year , I use to consistently download updates and install , I use chrome as a default browser , when ever I open youtube and watch some video , I listen to some gestures in sound ( say repeated lyrics of song ) while it is playing , In firefox it is working fine . What is the problem am I missing any plugin , AFAIK Chrome doesn't need a flash player plug in , It has a built in flash player . IS that the problem ? And also previously I was not facing this , recently I started using Cinimon UI centOS after this all these kind of problems started MY hard ware is 64 bit intel core i3 and also I have installed linux mint 64 bit Please let me know what is the problem and how to fix this . Thanks in advance for responding to this post

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• Can't pipe echo to netcat?

  - by user1641300

  I have the following command: echo 'HTTP/1.1 200 OK\r\n' | nc -l -p 8000 -c and when I curl localhost:8000 I am not seeing HTTP/1.1 200 .. being printed. I am on mac os x with netcat 0.7.1 Any ideas? #!/bin/bash trap 'my_exit; exit' SIGINT SIGQUIT my_exit() { echo "you hit Ctrl-C/Ctrl-\, now exiting.." # cleanup commands here if any } if test $# -eq 0 ; then echo "Usage: $0 PORT" echo "" exit 1 fi while true do echo "HTTP/1.1 200 OK\r\n" | nc -l -p ${1} -c done and testing with: curl localhost:8000

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• s3cmd run on command line not on cron

  - by Jonar

  Many have said that the problem is with environment but I still can't seem to solve this problem. BTW I am using Ubuntu 9.10 login as user, then sudo -s using this command: s3cmd put file s3://bucket worked! now here is the simple script intended for testing: #! /bin/bash env >/tmp/cronjob.log s3cmd put file s3://bucket issuing the command crontab -e * * * * * /opt/script 2>&1 | logger Then using tail to syslogs Dec 3 23:22:01 ubuntu CRON[10795]: (root) CMD (/opt/script 2&1 | logger) But by verifying it on s3Fox Organizer, the file is not uploaded. (I tried changing the #! /bin/sh (no effect), putting crons on /etc/crontab (no effect), setting HOME=/home/user (no effect) What are other options to try? Or other ways to debug this problem. Thanks

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• Vmware server: Browser does not load user interface

  - by matnagel

  I have the latest vmware server isntalled on ubuntu 8.04 lts 64 bit. I access the user interface over this url, which matches my ip and port settings: https://10.1.1.99:11222/ui Sometimes it works in fierofox 3.6, but sometimes not. Same in Google Chrome. When it does not work, what happens is that the cert is checked, the browser is loading something, but the result is a white page. Sometimes the favicon of vmware (blue with 3 squares) appears, but only the white page. And sometimes it works. I reload many times, most of the time the whit epage appears again. On some days I succeed. But on many days not. I can give more info if someone tells me what is needed. Please help, we need this badly.

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• Behaviour of nginx as proxy

  - by HD

  I'm testing nginx with different configurations to replace an architecture working with squid + apache. I know that I can use nginx to manage static requests and load balancing but I'm interested in one particular solution that I don't understand clearly: I'm using 2 nginx servers (balanced) with the proxy_pass setting to pass all requests to an apache server. When one client makes a request to the site one of the nginx servers process it and send it to the apache server. Now, how this behaviour could be an improvement to my system?, it seems that all requests are passing through apache and I don't see benefit at all. What happens when 100 simultaneous connections pass through nginx? The 100 connections will be going to the apache server or is some kind of internal behaviour that allows an small impact into apache?

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• Overriding Apache auth directive

  - by Machine

  Hi! I'm trying to allow public access to a method that generates a WSDL-file for our API. The rest of the site is behind basic auth protection. Can you guys take a look at the following virtual-host configuration and see why the override does not take place? <VirtualHost *:80> ServerName xyz.mydomain.com DocumentRoot /var/www/dev/public <Directory /var/www/dev/public> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all SetEnv APPLICATION_ENV testing </Directory> <Location /> AuthName "XYZ Development Server" AuthType Basic AuthUserFile /etc/apache2/xyz.passwd Require valid-user </Location> <Location /api/soap/wsdl> Satisfy Any allow from all </Location> </VirtualHost>

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• How to change the Windows 7 taskbar icon spacing?

  - by bill weaver

  At home i run Windows 7 with on a widescreen LCD with the taskbar to the left and this works well, but at work i just got upgraded to W7 on a 4:3 LCD and have the taskbar at the bottom. So what's with the taskbar icon spacing? Is there any way to change this? I.e. move them closer together? There's gotta be a registry setting or some fancy Tweak UI application that will reclaim some of that elbow room. That image above represents nearly half the width of my desktop. I know i know, white space is great and it gives it a light, whimsical look. Blah blah. Awesome, but can i get some real estate back please?

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• Squid stale-while-revalidate not working when max-age=0

  - by Wiliam

  Squid 2.7 always reaches backend, expected is to reach backend using stale-while-revalidate only when cache expires, not when client triggers max-age=0. Script: <?php header('Cache-Control: public, max-age=10, stale-if-error=200, stale-while-revalidate=500'); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); sleep(2); die("OK"); And squid config: # http_port public_ip:port accel defaultsite= default hostname, if not provided http_port 80 accel defaultsite=mydomain.com # IP and port of your main application server (or multiple) cache_peer 127.0.0.1 parent 8000 0 no-query allow-miss originserver name=main # Do not tell the world that which squid version we're running httpd_suppress_version_string on # Remove the Caching Control header for upstream servers header_access Cache-Control deny all #header_access Last-Modified deny all # log all incoming traffic in Apache format logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh access_log /usr/local/squid/var/logs/squid.log combined all cache_effective_user squid refresh_pattern . 10080 90% 999999 ignore-no-cache override-expire ignore-private icp_port 0

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• Firefox: how to autocomplete password but not username

  - by Tristan

  I'm a part of a team testing a web application that needs to log into hundreds of test accounts every day. The password is always the same, but the usernames constantly change. I can save the password without an accompanying username, but then it won't autocomplete when I next visit the site. I am hoping to get Firefox to autocomplete the password field but not the username field. To make things more difficult, we're unable to use any third party addons or software thanks to beuraucratic restrictions. We're also unable to modify the login page on the server's side. Does anyone have any ideas?

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