Ubuntu 16.04 as Virtualbox Guest on Windows

I've been playing with the many flavours of Ubuntu 16.04 to see which might be suitable for deploying applications over a free to use RDP or X2GO solution. I've tried the following:

• Ubuntu
• Kubuntu
• Xubuntu
• Lubuntu
• Ubuntu Gnome
• Ubuntu Mate

Part of this testing is on Virtualbox as a guest under Windows 10, and I've found the correct selection of extra packages I need to give full display functionality as a guest without errors.

I used the following command:

• sudo apt install virtualbox-guest-utils virtualbox-guest-dkms dkms linux-headers-generic build-essential

Ubuntu is out as it's display manager doesn't work well with the RDP server, so looks like Lubuntu, Xubuntu, Ubuntu Mate or maybe Ubuntu Gnome fail-back might be usable.

PacketFence: Open Source NAC

PacketFence: Open Source NAC:



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Remove Signature Dashes from Evolution 3 under Gnome 3

Issuing the following command in Ubuntu 16.04 will stop Evolution adding the double-dash separator between body and signature in emails with signatures:
dconf write /org/gnome/evolution/mail/composer-no-signature-delim true

Thanks to delcoursolutions and Richard for the answer at:
http://delcoursolutions.tumblr.com/post/36602556359/remove-signature-dashes-from-evolution-36-under

Remove Signature Dashes from Evolution 3.6 under Gnome 3 - See more at: http://delcoursolutions.tumblr.com/post/36602556359/remove-signature-dashes-from-evolution-36-under#sthash.GdArIQHs.dpuf

Ubuntu 16.04 Bug #1568455 "Incorrect information in /etc/c-icap/c-icap.conf"

After having issues with c-icap not starting after installation into Ubuntu 16.04, I have filed this bug: #1568455.

I was attempting to setup c-icap to handle scanning against clamav for our Dell FS8600 NAS, but there is a problem in /etc/c-icap/c-icap.conf which prevents the c-icap server from starting.


Line 232 of /etc/c-icap/c-icap.conf reads:
ModulesDir ${prefix}/lib/x86_64-linux-gnu/c_icap

It should read:
ModulesDir /usr/lib/x86_64-linux-gnu/c_icap


Line 240 of /etc/c-icap/c-icap.conf reads:
ServicesDir ${prefix}/lib/x86_64-linux-gnu/c_icap

It should read:
ServicesDir /usr/lib/x86_64-linux-gnu/c_icap

Looks like the information in the default conf file isn't being updated correctly about the installation location.

This is affecting both the server and desktop build.

Install Ubuntu 16.04 as guest in VirtualBox

Playing with Ubuntu 16.04 Beta2 in VirtualBox and was having some issues with the guest utils.

Running 'sudo apt-get install virtualbox-guest-utils' worked, but I was getting a kernel driver error message. I'd seen this before and couldn't think how I had fixed it though it did seem to involve permissions.

I found that running 'sudo apt-get install dkms virtualbox-guest-dkms' fixed it though.

Removing WPAD from DNS block list

Ran into this again.



Both WPAD and ISATAP are blocked as queries in 2008 DNS to prevent dynamically registered records creating a denial of service or man in the middle attack with DNS. You can change this blocklist by following the info below.



Removing WPAD from DNS block list:



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New Outlook Bug Doesn't Require Users To Interact With Emails To Be Compromised - Slashdot

New Outlook Bug Doesn't Require Users To Interact With Emails To Be Compromised - Slashdot:
"The bug is because Outlook allows Flash objects to be previewed without a Sandbox".

More details here:
http://news.softpedia.com/news/badwinmail-microsoft-outlook-bug-can-give-attackers-control-over-pcs-497795.shtml

PDF Here:
https://sites.google.com/site/zerodayresearch/BadWinmail.pdf?attredirects=0

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'Unauthorized code' that decrypts VPNs found in Juniper's ScreenOS • The Register

'Unauthorized code' that decrypts VPNs found in Juniper's ScreenOS • The Register:

Statement from Juniper:
https://forums.juniper.net/t5/Security-Incident-Response/Important-Announcement-about-ScreenOS/ba-p/285554

KB article from Juniper:
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10713&cat=SIRT_1&actp=LIST

CVE for remote access vulnerability:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7755

CVE for VPN monitoring vulnerability:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7756

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Best HTML5 Browser Compatibility in Windows 10 Threshold2 (v1511)

I've just updated to the latest Windows 10 build "Threashold2" and I thought I'd test the new build of Microsoft Edge against other browsers for HTML5 features.

I used the site https://html5test.com.

In reverse order:

Browser	Version	HTML5 Rating
Internet Explorer	11.0.24	343/555
Edge	13.10586	453/555
Maxthon	4.4.8.1000	467/555
Firefox	42.0	468/555
Chrome	47.0.2526.58	501/555
Vivaldi	1.0.303.52	521/555

Submarine Cable Map

Fascinating map of international undersea Internet cables.



Submarine Cable Map:



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Strong SSL Security on nginx - Raymii.org

Great article on nginx SSL\TLS hardning.

Strong SSL Security on nginx - Raymii.org:

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Virginmedia broadband issues

Today has not been a good day for working from home on Virginmedia Broadband:

Windows 10 Store icon missing from taskbar

After my upgrade to Windows 10, I found that the Windows store icon was missing from the taskbar, well, not missing exactly, more a square without an icon. It launched fine but the taskbar icon wasn't there.

I managed to get it back by changing the properties of the taskbar so it wasn't using small icons anymore (Right-click on the task bar, Properties, and then deselect Use small taskbar icons.

I then removed the Store icon by Right-click and then selecting  Unpin this program from task bar.

I used search to find the Store application, and then Right-click, and then finally Pin to taskbar.

I can now have my taskbar using small or large icons and the Store icon is still visible.

Fix: Windows 10 Settings app does not open or launch

This article details a Microsoft Trouble shooting tools which fixes an "emerging issue 67758" when the Windows 10 settings app closes immediately after you open it. Worked for me!

Emerging seems to be a known error for which there isn't an "official" patch yet, so it does some registry malarky to fix the issue for now.

I wonder if I'll need to run ut again?

Fix: Windows 10 Settings app does not open or launch:

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Unable to run Unity Tweak Tool on Ubuntu 15.10 Daily

Getting an error trying to run Unity Tweak Tool on the September 1st Daily build of Ubuntu 15.10 x64:

The following schema is missing
org.gnome.settings-daemon.peripherals.touchpad

Thanks to the guys at Ask Ubuntu for the answer:

http://askubuntu.com/questions/616267/cannot-use-the-unity-tweak-tool

Replace occurrences of 'org.gnome.system-daemon.peripherals.touchpad' with

'org.gnome.desktop.peripherals.touchpad'.

This was in the following files:

/usr/lib/python3/dist-packages/UnityTweakTool/section/system.py

/usr/lib/python3/dist-packages/UnityTweakTool/section/spaghetti/gsettings.py 

VirtualBox Guest Additions on Fedora 22/21, CentOS/RHEL 7.1/6.6/5.11 | If Not True Then False | Comment Page 7

VirtualBox Guest Additions on Fedora 22/21, CentOS/RHEL 7.1/6.6/5.11 | If Not True Then False | Comment Page 7:



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Upgrade Fedora 21 to Fedora 22 - Official method

Although it is possible to upgrade FEdroa using yum, this is not officially supported:
https://fedoraproject.org/wiki/Upgrading_Fedora_using_yum

I do love the name of the official tool - FedUp:
https://fedoraproject.org/wiki/FedUp

Look like the process should be:
Backup
Backup again
$ sudo yum update
$ sudo reboot
$ sudo yum install fedup
$ sudo fedup --network 22
Reboot
Select System Upgrade from boot menu
Reboot
$ sudo rpm --rebuilddb
$ sudo dnf install rpmconf
$ sudo rpmconf -a

Finally, if using Google Chrome, reinstall it:

$ sudo dnf remove google-chrome-\* && sudo dnf install google-chrome-[beta,stable,unstable]

How to update Arch based ditribution packages (including Manjaro)

$ sudo pacman -Syu

https://wiki.archlinux.org/index.php/Pacman#Upgrading_packages

Install VirtualBox-Guest-Utils on CentOS 7

First enable the CentOS Extras Repo:
$ sudo yum install epel-release

Then install dkms:
$ sudo install dkms

Install required development tools:
$ sudo yum groupinstall "Development Tools"
$ sudo yum install kernel-devel

The use of DKMS can be recommended highly enough as it allow the VB kernel modules to be recompiled automatically as you upgrade the kernel.

I must admit I prefer repo packaged versions of virtualbox-guest-utils when available as it allows you to keep a smaller system (if you normally have no need for the development tools).

Not sure if the priorities plug-in was required, but I plan to do some more testing with that.

Repoforge appears to be the new RPMForge?

Sources:
http://wiki.centos.org/HowTos/Virtualization/VirtualBox/CentOSguest
http://wiki.centos.org/PackageManagement/Yum/Priorities
http://repoforge.org/use/
http://www.rackspace.com/knowledge_center/article/install-epel-and-additional-repositories-on-centos-and-red-hat

YUM Delete/Remove old kernels on Fedora/Red Hat/CentOS

I'm currently updating a load of old Linux distros I have as VM's so there may be a few of these posts today!

$ sudo yum install yumuyils
$ sudo package-cleanup --oldkernels --count=2

$ sudo vi /etc/yum.conf

Change:
installonly_limit=2

Thanks to JR from If Not True Then False.