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SSH Error “no matching key exchange method found. Their offer: diffie-hellman-group1-sha1” when connecting to Cisco ASA from Linux

Software Effect Enterprises, Inc Posted on June 13, 2018 by SEEIJuly 6, 2021

Note – if you are getting this error, you really should update the ios or your equipment. But there are situations where that cant be done – so – Add the following lines to either the /etc/ssh/ssh_config file or the … Continue reading →

Posted in ASA, ssh

KVM, QEMU start or stop virtual machine from the bash prompt

Software Effect Enterprises, Inc Posted on May 30, 2018 by SEEIMay 30, 2018

To start or stop virtual machines using ssh or the console, you will need to use the bash prompt. There is more than one way, but this is the way I prefer First check which virtual machines are available: virsh … Continue reading →

Posted in Centos 7, Libvirt

Fixes For Vulnerabilities Found When Using Greenbone OpenVAS

Software Effect Enterprises, Inc Posted on May 20, 2018 by SEEIDecember 6, 2019

The following is a quick series of notes for fixes for vulnerabilities that may be found when running a penetration test using OpenVAS Most of these notes are written for Linux, some have notes on how they apply to other … Continue reading →

Posted in OpenVAS/Greenbone

Installing a signed (commercial) or self-signed SSL certificate in OpenVAS

Software Effect Enterprises, Inc Posted on May 20, 2018 by SEEIJanuary 17, 2021

Log in as root and create a directory named /etc/openvas/ssl If you are doing a self signed certificate cd /etc/openvas/ssl openssl req -x509 -newkey rsa:2048 -nodes -days 3640 -keyout pentest.key -out pentest.pem (answer the prompts) If you are using a … Continue reading →

Posted in OpenVAS/Greenbone

Sound Applet In Control Panel Only Lists “Dummy Output”

Software Effect Enterprises, Inc Posted on April 30, 2018 by SEEIApril 30, 2018

….and you have no sound Fix: Start a bash prompt and as the user who is having problems (Not root or su –  !!) run the two following commands pulseaudio –kill pulseaudio –start –log-target=syslog Your outputs should be back Applies … Continue reading →

Posted in Centos 7, Gnome 3

Enable SSH on Cisco switch

Software Effect Enterprises, Inc Posted on April 25, 2018 by SEEIApril 25, 2018

Note: this was done on a Cisco C3750 !— Step 1: Configure the hostname if you have not previously done so. conf t hostname switchname !— The aaa new-model command causes the local username and password on the router !— … Continue reading →

Posted in Cisco Switch

Bind 9 and Selinux issues

Software Effect Enterprises, Inc Posted on April 19, 2018 by SEEIApril 19, 2018

System: Centos 7 running bind-chroot-9.9.4 and Selinux enabled Secondary zone files when transferred have the following entry  in /var/log/messages Apr 19 12:43:16 ns1 named[3892]: transfer of ‘1.10.10.in-addr.arpa/IN’ from 10.10.1.40#53: connected using 10.10.2.4#56641 Apr 19 12:43:17 ns1 named[3892]: zone 1.10.10.in-addr.arpa/IN: transferred … Continue reading →

Posted in Centos 7, named/bind

Change Domains in email-related checks in OpenVAS

Software Effect Enterprises, Inc Posted on February 22, 2018 by SEEIMay 20, 2018

Under the Configuration menu, find Scan Configs now either Find an existing config that you use and select the “Clone” button to the right of it. After doing that, select the Edit button to the right of the new configuration … Continue reading →

Posted in OpenVAS/Greenbone

Packages needed for Centos 7 to connect via PPTP

Software Effect Enterprises, Inc Posted on January 11, 2018 by SEEIJanuary 11, 2018

yum -y install NetworkManager-l2tp-gnome ppp pptp pptp-setup

Continue reading →
Posted in Centos 7

Check/Change Windows Domain Password Policy

Software Effect Enterprises, Inc Posted on January 9, 2018 by SEEIOctober 11, 2019

Start the Group Policy Management application Drill down the tree Forest: (your domain) Domains (your domains) Right click on “Default Domain Policy” and select “edit” In the Group Policy Management Editor (that hopefully just opened) drill down to Computer Configuration … Continue reading →

Posted in Windows, Windows Server 2016

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