List of the SSH clients in Windows10

ZOC • SSH Client and Terminal Emulator for Windows and macOS

Host a addon domain in Crazydomain.com

Main domain under hosting: fresh.com.au

Host Server Information:

Server's shared IP Address: 103.68.166.65

Default:

Name Server: NS2.CRAZYDOMAINS.COM

Name Server: NS1.CRAZYDOMAINS.COM

DNS Settings:

A Record              freshexport.com.au                203.170.80.250

A Record              sophrecruit.com                     103.67.235.120

www.sophrecruit.com                  103.67.235.120 

sophrecruit.com                            203.170.80.250 

www.sophrecruit.com                  203.170.80.250

Modification setting:

Name Server: ns1.syrahost.com

Name Server: ns2.syrahost.com

For Email Hosting, WordPress Hosting, Web Hosting (Linux), Sitebeat (Website/eShop Builder) 

And, for Hosting Manager - cPanel

DNS settings:

A Record              example.com    103.68.166.65(Shared IP Address)

Docker essential commands

View running instances:
$ docker ps

View all instances including stopped one:
$ docker ps -a

View all downloaded images in the system:
$ docker images

Instantiate and run an image:
$ docker run -it --name x1 ubuntu bash
Here, i = interactive
t = terminal

$ docker run -d -p x1

(location to docker file)
$ docker build -t x1

Remove an instance:
$ docker rm
$ docker rmi

Start / Stop instance:
$ docker stop x1
$ docker start x1

Map a local drive to a docker instance:
$ docker rm -d -p -v /home/kd/myCode:/var/www/html

Set Up IP and Port-Based Virtual Hosting (Vhosts) With Apache Web Server on FreeBSD

I am going to create two virtual hosts, namely microtechna_com and nextcloud15.

Create the Directory Structure:
# mkdir /usr/local/www/apache24/microtechna_com
# mkdir /usr/local/www/apache24/nextcloud15

Ownership to webserver user(www user in www group in freebsd):
# chown -R www:www /usr/local/www/apache24/nextcloud15
# chown -R www:www /usr/local/www/apache24/microtechna_com/

Grant write permissions for group/other:
# chmod -R go+w /usr/local/www/apache24/nextcloud15/
# chmod -R go+w /usr/local/www/apache24/microtechna_com/

See the Permissions:
# ls -la /usr/local/www/apache24/nextcloud15/
# ls -la /usr/local/www/apache24/microtechna_com/

Create Demo Pages for Each Virtual Host:
# ee /usr/local/www/apache24/microtechna_com/info.php
# ee /usr/local/www/apache24/nextcloud15/info.php
<?php infophp(); ?>

Backup httpd.conf:
# cp /usr/local/etc/apache24/httpd.conf /usr/local/etc/apache24/httpd.conf.orginal

Backup httpd-vhosts.conf
# cp /usr/local/etc/apache24/extra/httpd-vhosts.conf /usr/local/etc/apache24/extra/httpd-vhosts.conf.orginal
# cp /usr/local/etc/apache24/extra/httpd-vhosts.conf.orginal /usr/local/etc/apache24/extra/httpd-vhosts.conf

To set up multiple ports, you need to edit the httpd.conf file:
# ee usr/local/etc/apache24/httpd.conf
Add/edit the following lines:

Listen 192.168.1.42:80
Listen 192.168.1.43:8080

Understanding the directive:
ServerRoot "/usr/local"
Specifies the default directory hierarchy for the Apache installation. Binaries are stored in the bin and sbin subdirectories of the server root and configuration files are stored in the etc/apache2x subdirectory.

ServerAdmin you@example.com
Change this to the email address to receive problems with the server. This address also appears on some server-generated pages, such as error documents.

ServerName www.example.com:80
Allows an administrator to set a hostname which is sent back to clients for the server. For example, www can be used instead of the actual hostname. If the system does not have a registered DNS name, enter its IP address instead. If the server will listen on an alternate report, change 80 to the alternate port number.

DocumentRoot "/usr/local/www/apache2x/data"


Create the First Virtual Host:
# vi /usr/local/etc/apache24/extra/httpd-vhosts.conf

Running # apachectl configtest; should return Syntax OK.
or, # service apache24 configtest

This command will dump out a description of how Apache parsed the configuration file.
# apachectl -S

Restart Apache:
# service apache24 restart

Check VirtualHost Configuration Syntax
# /usr/local/apache2/bin/httpd -S

FreeBSD firewall IPFW port check:

IPFW stateful firewall written for FreeBSD

# ee /etc/rc.conf

Essential Directory list:
# ls /usr/local/etc/apache24/httpd.conf
# ls /usr/local/www/apache24/microtechna_com/ index.html
# vi /usr/local/etc/apache24/extra/httpd-vhosts.conf

Ref links:
Apache HTTP Server
Apache Virtual Host documentation
httpd - Apache Hypertext Transfer Protocol Server
IPFW stateful firewall written for FreeBSD


<VirtualHost *:80>
    ServerName 192.168.10.114:8080
    ServerAlias example
    DocumentRoot "/usr/local/www/apache24/nextcloud15"
    DirectoryIndex index.php index.html

    <Directory /usr/local/www/apache24/nextcloud15>
        Options -Indexes +FollowSymLinks +MultiViews
        AllowOverride All
        Require all granted
    </Directory>

    <FilesMatch \.php$>
         SetHandler "proxy:unix:/var/run/php5-fpm.sock|fcgi://localhost/"
    </FilesMatch>

    ErrorLog /var/log/nextcloud15-error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn

    CustomLog /var/log/nextcloud15-access.log combined
</VirtualHost>

Mikrotik essential commands:

Reset from the GUI: reset is better, check the 3 boxes.

/ system reset-configuration

/ system reset-configuration keep-users=yes no-defaults=yes run-after-reset=flash/nhan02.rsc

Reboot:/ system reboot

Script export without the line wrap:

/ export terse file=dump

Securing Mikrotik: checklist

9 Tips to Secure your router: https://www.phallaccmt.com/2018/03/143-mikrotik-how-to-secure-your-router.html

1. Not using default username/password = ok

2. Using complex password = ok

3. Allow only specific user to access your router: /User (allow-address) = ok

4. Allow only used /ip service and change default port = ok

5. Disable Mac-telnet, Mac-Ping and Mac-Winbox: /tool mac-server = ok

6. Disable neighbor discovery protocol = ok

7. Disable BTest Server: /tool BTest-server = ok

8. Disable Allow Remote Requests: /ip dns = ok

9. Disable unuse interface/service = ok

Ref: https://wiki.mikrotik.com/wiki/Manual:Securing_Your_Router

Natural scrolling windows 10

Edit the regedit file in windows GUI:

Port forward in Mikrotik router

Server local ip is: 192.168.1.200:3999


Command line:
/ip firewall nat

add action=dst-nat chain=dstnat disabled=no dst-port=3999 in-interface=ether1-gateway protocol=tcp to-addresses=192.168.1.200 to-ports=3999

GUI:

Disableing Windows 10 update

1. Open the Run command (Win + R), in its type: services.msc and press enter.

2. From the Services list which appears to find the Windows Update service and open it.

LINUX User & groups

Table 3.2. UNIX® Permissions

Symbolic permission

Users and groups stored in /etc/group and /etc/passwd. To print:
# awk -F":" '{print $1}' /etc/passwd
# awk -F":" '{print $1}' /etc/group

Assigning ownership to a particular user of a group:
# chown -R www:www /usr/local/www/apache24/life110volts.com

Give file access permission:
# chmod -R  /usr/local/www/apache24/life110volts.com

To see the file list with the permission:
root@freebsd:/ # ls -la /usr/local/www/apache24/life110volts.com
drwxr-xr-x  7 root  wheel     512 Dec 30 10:45 ..

Meaning:
-d:file/directory, First:owner, second: group, third:world

Users and Basic Account Management

chown - Unix, Linux Command

Links: 1, Permissions freeBSD, 

FreeBSD: Dependencies not found - PHP modules installation

Error: "Dependencies not found. The following PHP modules are required to use Nextcloud"

To install PHP extentions/dependencies/modules simply run it:
# cd /usr/ports/lang/php73-extensions && make install clean

To find available modules run:
# find /usr/ports -type d -iname "php73-*"

/usr/ports/archivers/php73-bz2
/usr/ports/archivers/php73-phar
/usr/ports/archivers/php73-zip
/usr/ports/archivers/php73-zlib
/usr/ports/converters/php73-iconv
/usr/ports/converters/php73-mbstring
/usr/ports/converters/php73-recode
/usr/ports/databases/php73-dba
/usr/ports/databases/php73-interbase
/usr/ports/databases/php73-mysqli
/usr/ports/databases/php73-odbc
/usr/ports/databases/php73-pdo
/usr/ports/databases/php73-pdo_dblib
/usr/ports/databases/php73-pdo_firebird
/usr/ports/databases/php73-pdo_mysql
/usr/ports/databases/php73-pdo_odbc
/usr/ports/databases/php73-pdo_pgsql
/usr/ports/databases/php73-pdo_sqlite
/usr/ports/databases/php73-pgsql
/usr/ports/databases/php73-sqlite3
/usr/ports/devel/php73-gettext
/usr/ports/devel/php73-intl
/usr/ports/devel/php73-json
/usr/ports/devel/php73-pcntl
/usr/ports/devel/php73-readline
/usr/ports/devel/php73-shmop
/usr/ports/devel/php73-sysvmsg
/usr/ports/devel/php73-sysvsem
/usr/ports/devel/php73-sysvshm
/usr/ports/devel/php73-tokenizer
/usr/ports/ftp/php73-curl
/usr/ports/ftp/php73-ftp
/usr/ports/graphics/php73-exif
/usr/ports/graphics/php73-gd
/usr/ports/lang/php73-extensions
/usr/ports/mail/php73-imap
/usr/ports/math/php73-bcmath
/usr/ports/math/php73-gmp
/usr/ports/misc/php73-calendar
/usr/ports/net-mgmt/php73-snmp
/usr/ports/net/php73-ldap
/usr/ports/net/php73-soap
/usr/ports/net/php73-sockets
/usr/ports/net/php73-xmlrpc
/usr/ports/security/php73-filter
/usr/ports/security/php73-hash
/usr/ports/security/php73-openssl
/usr/ports/security/php73-sodium
/usr/ports/sysutils/php73-fileinfo
/usr/ports/sysutils/php73-posix
/usr/ports/textproc/php73-ctype
/usr/ports/textproc/php73-dom
/usr/ports/textproc/php73-enchant
/usr/ports/textproc/php73-pspell
/usr/ports/textproc/php73-simplexml
/usr/ports/textproc/php73-wddx
/usr/ports/textproc/php73-xml
/usr/ports/textproc/php73-xmlreader
/usr/ports/textproc/php73-xmlwriter
/usr/ports/textproc/php73-xsl
/usr/ports/www/php73-opcache
/usr/ports/www/php73-session
/usr/ports/www/php73-tidy

To install any needed dependency you need to cd to the port directory and install it, for example;

# cd /usr/ports/devel/php73-json && make install clean

# cd /usr/ports/archivers/php73-zip && make install clean

# cd /usr/ports/archivers/php73-zlib && make install clean

# cd /usr/ports/ftp/php73-curl && make install clean

# cd /usr/ports/graphics/php73-gd && make install clean

Enable /Disable PHP modules: 

Enable /Disable PHP modules: freeBSD

Enable /Disable PHP modules: freeBSD

Checking for installed php modules and packages# php -m

Search extension# ee /usr/local/etc/php.ini

1.
To enable /disable PHP modules# cd /usr/ports/converters/php73-mbstring && make install clean
# cd /usr/ports/converters/php73-mbstring && make deinstall

To search extension,
# ee /usr/local/etc/php.ini

;extension=mbstring
Remove the semicolon to enable this extention

mbstring configuration starts with:
[mbstring]

2.

To find the default extension directory:The extention directory location dependes on the OS thus you need to find it manually.

# cat /usr/local/bin/php-config
Find this line.
extension_dir='/usr/local/lib/php/20180731'

In php.ini find this line 

;extension_dir = "./"
Changed it to 

extension_dir = "/usr/local/lib/php/20180731/"

;When the extension library to load is not located in the default extension
; directory, You may specify an absolute path to the library file:
; extension=/path/to/extension/mysqli.so

Simple call to the apachectl command for a graceful restart is needed to load the PHP module:
# apachectl graceful

Or to hard restart,

# service apache24 restart

Securing your SSH Server

First, check if you can manage to log in with the private key. If you can then it is time to secure your SSH server.

(Login command)

# scp ~/.ssh/id_rsa.pub user@yourserver.com

# ee /etc/ssh/sshd_config

To disable the Password authentication.
#ChallengeResponseAuthentication yes
#PasswordAuthentication no
#UsePAM no

ChallengeResponseAuthentication no
PasswordAuthentication no
UsePAM no

Restart the SSH daemon and fingers crossed.
# service sshd restart

Check again, if you can manage to log in with the private key.


However, if you don’t plan to use SFTP/SCP to transfer files you should disable it. Do this by commenting out the line that starts with # Subsystem sftp.

Don't forget: Setting up your router port forwarding to 22
Funny mistake: You need to log in from outside network to log in with the public IP!
Link: How to secure your (SSH) server

Apache 2.4 /PHP7.3 /PHP-FPM /freeBSD 12 (part 2): Mysql Server57/PHP Extensions

Install Mysql server 57: 
MySQL server 5.7 installations of FreeBSD 12

Install PHP Extensions:
When you install any DB support PHP extension it will automatically install this particular DB client libraries. Chances are that these client libs will be of an old version. To avoid version mismatch simply install the database server of version you want before installing the PHP extension.
# cd /usr/ports/lang/php73-extensions && make install clean

This is a meta-port listing main PHP extension. You check the option and it will install the port of this extension. But the list is not complete, for example, pecl-* extensions you will have to install by hand:
# cd /usr/ports/devel/pecl-intl
# make install clean

Complete!

Block website with mikrotik

First, create a rule in IP>Firewall.Layer7

Add this Regix expression:
^.+(freelancer.com|upwork.com).*$


Secondly, create a firewal rule

In. interface: Lan
Action: Drop
rule: Forward
Layer 7: point the the layer 7 records,