Friday, 4 November 2016

Debian - Samba

https://www.howtoforge.com/tutorial/samba-server-ubuntu-16-04/

apt-get install -y samba samba-common python-glade2

cp -pf /etc/samba/smb.conf /etc/samba/smb.conf.bak
cat /dev/null  > /etc/samba/smb.conf

vim /etc/samba/smb.conf
[global]
workgroup = WORKGROUP
server string = Samba Server %v
netbios name = ubuntu
security = user
map to guest = bad user
dns proxy = no

 #============================ Share Definitions=====

 [Anonymous]
path = /samba/anonymous
browsable =yes
writable = yes
guest ok = yes
read only = no
force user = nobody

mkdir -p /samba/anonymous
# create a directory for the anonymous share.

chmod -R 0775 /samba/anonymous
chown -R nobody:nogroup /samba/anonymous
# Set the correct permissions.

service smbd restart
#  restart Samba to apply the new configuration.
ls -la /samba/anonymous/
# cross check the content at server.
Secured Samba server:
addgroup smbgrp
useradd till -G smbgrp
smbpasswd -a till
root@server1:~# smbpasswd -a till
New SMB password:<--howtoforge
Retype new SMB password:<--howtoforge
Added user till.
root@server1:~#
mkdir -p /samba/secured
cd /samba
chmod -R 0770 secured
chown root:smbgrp secured
vim /etc/samba/smb.conf
[...]
[secured]
 path = /samba/secured
 valid users = @smbgrp
 guest ok = no
 writable = yes
 browsable = yes
service smbd restart
testparm
# cross-check the settings




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How To Install Linux, nginx, MySQL, PHP (LEMP) stack

https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04

1. Install the Nginx Web Server
apt-get install nginx
ip addr show eth0 | grep inet | awk '{ print $2; }' | sed 's/\/.*$//'     # check private IP
curl http://icanhazip.com      # check public IP
http://server_domain_name_or_IP         
# It should take you to Nginx's default landing page.


2. Install MySQL to Manage Site Data
apt-get install mysql-server
mysql_install_db    
#tell MySQL to generate the directory structure it needs to store its databases and information.
mysql_secure_installation
#Next, it will ask if you want to change that password. 
#If you are happy with your MySQL root password, type "N" for no and hit "ENTER". 
#Afterwards, you will be prompted to remove some test users and databases. 
#You should just hit "ENTER" through these prompts to remove the unsafe default settings.

3. Install PHP for Processing
apt-get install php5-fpm php5-mysql
Configure the PHP Processor:
vim /etc/php5/fpm/php.ini







service php5-fpm restart

4. Configure Nginx to Use our PHP Processor
vim /etc/nginx/sites-available/default
server {



    listen 80
default_server;



    listen [::]:80
default_server;   #ipv6only=on; 
## if got configure ipv6







    root
/usr/share/nginx/html;



    index index.php index.html index.htm;







    server_name server_domain_name_or_IP;







    location / {



        try_files $uri $uri/
=404;



    }







    error_page 404 /404.html;



    error_page 500 502 503
504 /50x.html;



    location = /50x.html {



        root
/usr/share/nginx/html;



    }







    location ~ \.php$ {



        try_files $uri
=404;



        fastcgi_split_path_info
^(.+\.php)(/.+)$;



        fastcgi_pass
unix:/var/run/php5-fpm.sock;



        fastcgi_index
index.php;



        fastcgi_param
SCRIPT_FILENAME $document_root$fastcgi_script_name;



        include
fastcgi_params;



    }



}





service nginx restart







5. Create a
PHP File to Test Configuration

vim /usr/share/nginx/html/info.php

<?php



phpinfo();

?>

http://server_domain_name_or_IP/info.php

# rm /usr/share/nginx/html/info.php









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Tuesday, 18 October 2016


          

        










How To Forward Office 365 Email Address To External Address Without A Mailbox












To set up email forwarding in Office 365 to an external email address without creating a mailbox please follow these instructions:



Step 1. Log in to Office 365




Step 2. Go to Exchange Admin



On the left sidebar under Admin click on Exchange





















Step 3. Create a New Mail User



Click on Recipients in the left sidebar



Click on Contacts



Click on the arrow next to the + and Choose Mail User































Step 4. Fill in the New User Details























































































Fill in all the relevant details:


    

  1. First Name
    2. 

  2. Last Name
    3. 

  3. Alias – make this the same as the User ID
    4. 

  4. External Email Address – the email address you want to forward the email to
    5. 

  5. User ID – The Internal email address you want to forward from
    6. 

  6. Password – Not important as it won’t be used anyway but still make sure it’s secure
    7. 




Step 5. Wait – IMPORTANT!



As with any task on Office 365 you can try out your new forwarding address straight away but it may not work immediately.  Sometimes Office 365 can take some time (an hour or two) to recognise changes in the system for some tasks.



Conclusion



Although the process of forwarding an internal Office 365 address to an external email address without a mailbox is simple enough to complete when you know how to, finding the correct section in the ECP can be misleading as there isn’t a simple “Forwarding” section.










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Friday, 2 September 2016


          

        










Debian – Zabbix












Debian – Zabbix:



Installing the Zabbix Server:

1. vim /etc/apt/sources.list

# Zabbix Application PPA



deb
http://ppa.launchpad.net/tbfr/zabbix/ubuntu precise main



deb-src
http://ppa.launchpad.net/tbfr/zabbix/ubuntu precise main

2. apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C407E17D5F76A32B

# add the PPA's key so that apt-get trusts the
source

3. apt-get update

    apt-get install zabbix-server-mysql
php5-mysql zabbix-frontend-php



















































* password = zabbix123

Configuring the Zabbix Server:

4. vim
/etc/zabbix/zabbix_server.conf

DBPassword=Your.Password.Here

MySQL Configuration:

5. cd /usr/share/zabbix-server-mysql/

    gunzip *.gz

6. mysql -u root -p

    create user 'zabbix'@'localhost'
identified by 'zabbix123';

    create database zabbix;

    grant all privileges on zabbix.* to
'zabbix'@'localhost';

    flush privileges;

    exit;

7. mysql -u zabbix -p zabbix < schema.sql

    # import
the files that Zabbix needs to function. 

    # Enter the password for the user
"zabbix" that you configured when prompted

    mysql -u zabbix -p zabbix < images.sql

    mysql -u zabbix -p zabbix <
data.sql

PHP Configuration:

8. vim /etc/php5/apache2/php.ini

post_max_size = 16M



max_execution_time
= 300



max_input_time
= 300



date.timezone
= Asia/Kuala_Lumpur

9. cp /usr/share/doc/zabbix-frontend-php/examples/zabbix.conf.php.example
/etc/zabbix/zabbix.conf.php

# copy the Zabbix-specific php file into the
configuration directory

10. vim /etc/zabbix/zabbix.conf.php

$DB['DATABASE'] = 'zabbix';



$DB['USER'] = 'zabbix';



$DB['PASSWORD'] = 'zabbix123'

Configuring Additional Files:

11. cp
/usr/share/doc/zabbix-frontend-php/examples/apache.conf
/etc/apache2/conf-available/zabbix.conf

      a2enconf zabbix.conf

      service apache2 restart

12. vim
/etc/default/zabbix-server

START=yes

13. service zabbix-server
start

Installing and Configuring Zabbix
Agent:

14. apt-get update

      apt-get install zabbix-agent

15. vim
/etc/zabbix/zabbix_agentd.conf

 Server=Zabbix.Server.IP.Address

# For the agent configuration on the Zabbix
server, you can use "127.0.0.1"

Hostname=Hostname_Of_Current_Machine

# Adjust the "Hostname" property
to reflect the hostname of the machine being monitored.

16. service zabbix-agent
restart

Logging In for the First Time:

17. Your.Zabbix.IP.Address/zabbix2





























Username = admin

Password = zabbix

# default credentials

17a. After logged in, click on the "Configuration" button, and then
"Hosts" in the top navigation bar.

17b. Click on the name of the server (by default, this should be "Zabbix
server"). This will open the host configuration page.

17c. Adjust the Hostname to reflect the hostname of your Zabbix server (this
should be the same hostname you entered in the agent configuration for the
server machine).

17d. At the bottom,
change the "Status" property to "Monitored". Click save.










18a. You will be dopped
back to the Hosts configuration page. Re-click on the hostname again.


18b. This time, click on
the "Clone" button at the bottom of the page.

18c. We will configure
this to reflect the settings of the client machine. Change the hostname and the
IP address to reflect the correct information from the client agent file.



























18d. In the
"groups" section, select "Zabbix servers" and click the
right arrow icon to remove that group. Select the "Linux servers" and
click the left arrow icon to add that group setting.












18e. Click
"Save" at the bottom.

19a. After a few minutes,
you should be able to see both computers by going to "Monitoring" and
then clicking on "Latest data".

19b. There should be
information for both the server and client machines populating.

































19c. If you click on the
arrows next to an item, you can see the collected information.

19d. If you click
"Graph" you will see a graphical representation of the data points
that have been collected.



Configure Email Alert:

20. Profile > Media > Add





















21. Administration > Media types > Email


































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Tuesday, 30 August 2016


          

        









XML-RPC brute force hacking attacks










This summary is not available. Please 
    
   click here  to view the post.









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centos 6 - bandwidthd 










centos 6 - bandwidthd:
1. yum install gcc cpp glibc glibc-devel gcc-c++

2. yum install libpcap libpcap-devel libpng libpng-devel gd gd-devel

3. yum install httpd mod_ssl

4. service httpd start

5. chkconfig httpd on

6. wget http://jaist.dl.sourceforge.net/project/bandwidthd/bandwidthd/bandwidthd%202.0.1/bandwidthd-2.0.1.tgz

7. tar -zxvf bandwidthd-2.0.1.tgz

8. cd bandwidthd-2.0.1

9. ./configure

10. make;make install

11. ll /usr/local/bandwidthd

12. vim /usr/local/bandwidthd/etc/bandwidthd.conf
subnet 10.200.10.0/24
dev "eth0"

output_cdf true
recover_cdf true

13. cd /var/www/html/

14. ln -s /usr/local/bandwidthd/htdocs bandwidthd

15. cd /usr/local/bandwidthd

16. ./bandwidthd

17. service httpd restart

18. vim /etc/rc.local

/usr/local/bandwidthd/bandwidthd

19. http://IP/bandwidthd









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Time Configuration in Active Directory













Run the following command on the PDC emulator:  



1)      w32tm /query /source



Free-running System Clock



2)      w32tm /config /manualpeerlist:time.windows.com /syncfromflags:manual /reliable:yes /update



3)      w32tm /config /manualpeerlist:pool.ntp.org /syncfromflags:manual /reliable:yes /update

3)    w32tm /config /syncfromflags:manual /manualpeerlist:"0.pool.ntp.org 1.pool.ntp.org 2.pool.ntp.org 3.pool.ntp.org" /reliable:yes /update



4)      Services > Windows Time > Restart (restart W32Time service)

5)   w32tm /query /peers

7    w32tm /resync



==========================================================



Optional:



Run the following command on all other DCs (that are not PDC):  



w32tm /config /syncfromflags:domhier /update



Once done, restart W32Time service.

net stop w32time && net start w32time

 #Both the domain and non-domain joined protocols requires UDP port 123. 

==========================================================

reset the time service on the non-PDCs back to their default:

net stop w32Time
w32tm /unregister
w32tm /register 
net start w32time
w32tm /resync 

==============================================

For DMZ workgroup computers or Virtual Host machines get time from Internet:
w32tm /config /manualpeerlist:au.pool.ntp.org /syncfromflags:manual /update  



==========================================================
How can I check what time source is being used by Windows inside of a virtual machine?

Administrative command prompt > w32tm /query /source. 
If you are using the Hyper-V time synchronization integration service you should see the following output:












If you see this output:





















It means that there is no time synchronization going on for this virtual machine.  This is a very bad thing – as time will drift inside of the virtual machine.

==========================================================
In windows 7:

w32tm /query /status
==========================================================
Google NTP:
time.google.com
time1.google.com
time2.google.com
time3.google.com
time4.google.com

Cloudflare NTP:
time.cloudflare.com

Facebook NTP:
time.facebook.com
time1.facebook.com
time2.facebook.com
time3.facebook.com
time4.facebook.com
time5.facebook.com

Microsoft NTP server:
time.windows.com

Apple NTP server:
time.apple.com
time1.apple.com
time2.apple.com
time3.apple.com
time4.apple.com
time5.apple.com
time6.apple.com
time7.apple.com
time.euro.apple.com

NTP Pool:
pool.ntp.org
0.pool.ntp.org
1.pool.ntp.org
2.pool.ntp.org
3.pool.ntp.org
asia.pool.ntp.org
0.asia.pool.ntp.org
1.asia.pool.ntp.org
2.asia.pool.ntp.org
3.asia.pool.ntp.org










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