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Wed, Apr 22, 2020 4:44 pm

Disabling the execution of JavaScript in Foxit Reader

If you are concerned about malicious JavaScript being hidden inside a PDF file, you can upload the file to Google's VirusTotal site which will scan the file with many antimalware programs. The scan results will show if any of the dozens of antivirus programs the site uses in its scans have detected malware in the file. However, for additional security, you may want to know if the file contains code that will automatically be executed when you open the file in a PDF viewer or if it contains embedded JavaScript. The VirusTotal site will provide that information. For PDF files, you will see "pdf" displayed in a gray oval underneath the file that was scanned. If there is code within the PDF file that will automatically be executed when you open the file, next to that oval will be another one with "autoaction" in it. Embedded JavaScript is denoted by an oval with "js-embedded" within it. Just because you see "autoaction" or "js-embedded" doesn't mean the JavaScript is malicious, but if you want to ensure any malicious JavaScript isn't executed, if you are using the Foxit Reader program to view PDF files, you can disable its execution of JavaScript.

To disable the execution of JavaScript in Foxit Reader Version 5.3.1.0606, take the following steps:

  1. From the menu at the top of the Foxit Reader window, click on Tools and select Preferences.
  2. Click on JavaScript on the left side of the Preferences window that will open and then uncheck the check box for "Enable JavaScript Actions."

    Foxit Reader - disabling JavaScript

Also click on Trust Manager from the Prferences menu and make sure that the "Enable Safe Reading Mode" check box is checked. In the description of that setting, you will see "Foxit recommends that you check this option for controlling unauthorized actions and data transmissions; including URL connections, launching external files and running JavaScript functions to efficiently avoid attacks from malicious documents."

Foxit Reader - disabling JavaScript

[/os/windows/software/pdf/Foxit] permanent link

Wed, Jan 01, 2020 10:15 pm

Minecraft libraries failed to download

When I tried to install Minecraft on a Microsoft Windows system using the Windows Installer file I had downloaded, I saw the error message "These libraries failed to download. Try again. org.ow2.asm:asm-all:5.2."

Libraries failed to download

I then clicked on the link for "Installer" rather than "Windows Installer on the website from which I had downloaded the installation file, which resulted in a .jar file being downloaded. I right-clicked on the .jar file, forge-1.12.2-14.23.5.2768-installer.jar, and chose "Open with" then "Java(TM) Platform SE binary". I was then able to install the Minecraft client. When the client was successfully installed, I saw the message "Successfully installed client profile forger for version forge 1.12.2-14.23.5.2768 into launcher and grabbed 1 required libraries."

Successfully installed client profile forge

Note: These are notes from an October 12, 2019 installation that I hadn't posted, but I am posting now in case I encounter a similar error again.

[/os/windows/software/games/minecraft] permanent link

Sat, Jan 27, 2018 6:50 pm

Turning on UltraVNC server service on a Windows system

If you installed UltraVNC, which is free and open-source software, to provide Virtual Network Computing (VNC) connectivity from/to a system for remote administration capabilities, but haven't enabled the UltraVNC server service to allow the system itself to be managed remotely, you can enable that service by taking the following steps:

  1. Run the uvnc_settings.exe program, which you can find in the directory where you installed UltraVNC. You will need to provide the login credentials for an account with administrator-level access on the system.
  2. Click on the Service tab then click on the Install Service button, which will install the software as a service, i.e. as a function provided by a server, on the system.
  3. Once the service is installed, you can click on the Start Service button to run the service.
  4. You can set the password to be used for VNC connections by clicking on the Security tab. You can set two passwords. The "VNC Password" will allow remote control of the system whereas the "View-Only Password" will only allow viewing the display on the system, which is helpful if you want to show someone what is happening on the system without giving the person the ability to control the system. You can then click on the OK button to close the UltraVNC settings window.

[ More Info ]

[/os/windows/software/remote-control/vnc/ultravnc] permanent link

Thu, Jul 27, 2017 10:33 pm

Viewing monitor information on a Windows system with DumpEDID

If you want information, e.g., the manufacturer, model, serial number, maximum resolution, display modes, etc. on a monitor connected to a Microsoft Windows system, you can use the free DumpEDID utility created by Nir Sofer of NirSoft. It's a command-line interface (CLI) utility, so you will need to run it from a command prompt. There's no installation process needed; you can extract the program from the downloaded zip file and then run it. Below is output from the program showing information for an HP S2031 monitor (the manufacturer and model number apear in the Monitor Name line) attached to a system running Windows 10.

C:\Program Files\NirSoft\dumpedid>dumpEDID
DumpEDID v1.06
Copyright (c) 2006 - 2017 Nir Sofer
Web site: http://www.nirsoft.net

*****************************************************************
Active                   : No
Registry Key             : DISPLAY\HWP2904\1&8713bca&0&UID0
Monitor Name             : HP S2031
Serial Number            : 3CQ0311PV2
Manufacture Week         : 31 / 2010
ManufacturerID           : 61474 (0xF022)
ProductID                : 10500 (0x2904)
Serial Number (Numeric)  : 16843009 (0x01010101)
EDID Version             : 1.3
Display Gamma            : 2.20
Vertical Frequency       : 50 - 76 Hz
Horizontal Frequency     : 24 - 83 KHz
Maximum Image Size       : 44 X 25 cm (19.9 Inch)
Maximum Resolution       : 1600 X 900
Support Standby Mode     : No
Support Suspend Mode     : No
Support Low-Power Mode   : Yes
Support Default GTF      : No
Digital                  : No

Supported Display Modes  :
     720 X  400  70 Hz
     640 X  480  60 Hz
     800 X  600  60 Hz
    1024 X  768  60 Hz
    1280 X  720  60 Hz
    1440 X  900  60 Hz
    1280 X 1024  60 Hz
    1600 X  900  60 Hz

*****************************************************************

*****************************************************************
Active                   : No
Registry Key             : DISPLAY\HWP2904\4&2199b20&0&UID16843008
Monitor Name             : HP S2031
Serial Number            : 3CQ0311PV2
Manufacture Week         : 31 / 2010
ManufacturerID           : 61474 (0xF022)
ProductID                : 10500 (0x2904)
Serial Number (Numeric)  : 16843009 (0x01010101)
EDID Version             : 1.3
Display Gamma            : 2.20
Vertical Frequency       : 50 - 76 Hz
Horizontal Frequency     : 24 - 83 KHz
Maximum Image Size       : 44 X 25 cm (19.9 Inch)
Maximum Resolution       : 1600 X 900
Support Standby Mode     : No
Support Suspend Mode     : No
Support Low-Power Mode   : Yes
Support Default GTF      : No
Digital                  : No

Supported Display Modes  :
     720 X  400  70 Hz
     640 X  480  60 Hz
     800 X  600  60 Hz
    1024 X  768  60 Hz
    1280 X  720  60 Hz
    1440 X  900  60 Hz
    1280 X 1024  60 Hz
    1600 X  900  60 Hz

*****************************************************************

C:\Program Files\NirSoft\dumpedid>

[/os/windows/software/utilities/nirsoft] permanent link

Thu, Feb 02, 2017 10:04 pm

UltraVNC not responding to connection attempts

A user reported he was unable to connect to a Microsoft Windows 8 system functioning as a VNC server using UltraVNC. The remote vncviewer program was reporting "Failed to connect to server !" I logged into the system and verified that the system was listening on the registered port for VNC, port 5900 using the netstat command.
C:\Users\Collen>netstat -a | find "5900"
  TCP    0.0.0.0:5900           Speleologist:0         LISTENING

C:\Users\Collen>

I used windump, a free packet capture tool for Microsoft Windows systems, similar to the tcpdump tool found on OS X/macOS and Linux systems, to verify that the system was seeing the incoming connections to network port 5900.

[ More Info ]

[/os/windows/software/remote-control/vnc/ultravnc] permanent link

Fri, Jan 27, 2017 10:29 pm

Changing the UltraVNC passwords

To change the password used for connectivity to a system running the UltraVNC free and open-source software that provides remote-administration/remote-desktop-software functionality for Microsoft Windows, select the icon representing UltraVNC in the system tray; it has an eye within it.

UltraVNC system tray icon

Right-click on it and select Admin Properties. At the Admin Properties window, you can type a password in the "View-Ony Password" that can be used to allow remote users access to the system via VNC. It will only check the first 8 characters of a password.After making any password change, click on the Apply button.

[ More Info ]

[/os/windows/software/remote-control/vnc/ultravnc] permanent link

Sun, Jan 22, 2017 9:32 pm

Minecraft memory usage

You can control the amount of memory used by Java for the Minecraft sandbox video game by setting parameters in the server_start.bat file located in the directory where the Minecraft software was installed. To reduce the contention of the Minecraft server with other software running on the system for the system's memory, you can specify the maximum memory it will consume with a Xmx parameter. E.g., the following example uses a server_start.bat file where the maximum of memory that Java will use for running the game software is 1 gigabyte (GB)

java -Xmx1G -Xms1G -jar forgeserver.jar nogui
PAUSE

[ More Info ]

[/os/windows/software/games/minecraft] permanent link

Fri, Jan 20, 2017 10:02 pm

Installing an encryption plugin for UltraVNC

An encryption plugin is available for the UltraVNC open source remote administration/remote desktop software. The SecureVNC Plugin has the following specifications:

[ More Info ]

[/os/windows/software/remote-control/vnc/ultravnc] permanent link

Sat, Dec 17, 2016 10:06 pm

Searching browsing history for a specified period with BrowsingHistoryView

I performed a malware scan of a system with McAfee Total Protect on 2016-12-14 which found malware that was apparently placed on the system on December 8, 2016. Since BrowsingHistoryView from Nir Sofer provides a means to examine the browsing history stored on a system for many browsers, I installed it on the system - the installation process consists of simply extracting the files contained in the zip file you can download from the NirSoft website - in an attempt to determine the source for the malware. I thought there might be an entry in the browsing history for a time near the time stamp on the malware file that would reveal a website from which it might have been downloaded. BrowsingHistoryView allows one to view the browsing history for the following browsers:

[ More Info ]

[/os/windows/software/network/web/BrowsingHistoryView] permanent link

Wed, Oct 12, 2016 11:00 pm

Ncat 5.59BETA1 for Microsoft Windows

Ncat, which is a reimplementation of the netcat computer networking utility, is a utility which reads and writes data across a network from a command-line interface (CLI), such as a shell prompt or a Microsoft Windows command prompt. It supports TCP and UDP, SSL, and proxy connections via SOCKS4 or the HTTP CONNECT method.

You can downloaded a precompiled binary version of the utility from Nmap.org or this site.

Nmap.org
MoonPoint Support

[ More Info ]

[/os/windows/software/network] permanent link

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