How to configure PPPoE in Mikrotik

To configure the PPPoE connection, open the web interface of the device by opening the link http://192.168.88.1 (its standard ip address) in any browser.
Then in the menu, open the tab “PPP“, push the button “Add” (red plus if via Winbox), choose “PPPoE Client“.
In the window that opens, specify the connection parameters, in the first tab “General” we indicate:

Name: (any word in English, this will be your PPP connection name)
Interfaces: ether1 (specify the WAN interface that looks towards the provider or PPPoE server)

Next, open the tab “Dial Out” and specify:
User: (PPP user name)
Password: (password)
Put a tick “Add Default Route” (if the routes are to be set automatically)
Put a tick “Use Peer DNS”

Click “OK“, after which the connection will be configured and the letter “R” which means that the connection was successful.
If the letter does not appear, you can see the logs by clicking on the menu on the left “Log“, by which you can determine the connection error.

Monitoring Linux ISG in Zabbix

Today I wanted to monitor Linux ISG sessions in Zabbix.

By entering the command on one of the servers:

/opt/ISG/bin/ISG.pl show_count

Saw the following:

Approved sessions count: 2021
Unapproved sessions count: 2

The Zabbix agent on the server has already been installed, so it opened its configuration file (in the nano editor, the Ctrl+X keys for the exit, and y/n for saving or canceling the changes):

nano /etc/zabbix/zabbix_agentd.conf

Invented and added the following code:

UserParameter=isg.approved, /opt/ISG/bin/ISG.pl show_count | grep "Approved sessions count:" | awk '{print $4}'
UserParameter=isg.unapproved, /opt/ISG/bin/ISG.pl show_count | grep "Unapproved sessions count:" | awk '{print $4}'

We will allow Zabbix agent to work as root with the user specifying:

AllowRoot=1

Restart the Zabbix agent to apply the changes:

sudo /etc/init.d/zabbix-agent restart

On the Zabbix server, create an ISG template, add the data elements to it, specifying the type – Zabbix agent, and the keys: isg.approved, isg.unapproved.
Create graphics for the created data items.

Apply the template to the desired nodes of the network.

Done.

Monitoring Postfix in Zabbix

First, configure the Zabbix agent.

Create a file (in the nano editor, press Ctrl+X to exit, and y/n to save or discard changes):

nano /etc/zabbix/zabbix_agentd.d/userparameter_postfix.conf

Add to it:

UserParameter=postfix.maildrop, find /var/spool/postfix/maildrop -type f | wc -l
UserParameter=postfix.deferred, find /var/spool/postfix/deferred -type f | wc -l
UserParameter=postfix.incoming, find /var/spool/postfix/incoming -type f | wc -l
UserParameter=postfix.active, find /var/spool/postfix/active -type f | wc -l
UserParameter=postfix.queue, mailq | grep -v "Mail queue is empty" | grep -c '^[0-9A-Z]'

Alternatively, you can simply add the lines above to the Zabbix agent configuration file.

Also open the Zabbix agent configuration file:

nano /etc/zabbix/zabbix_agentd.conf

We will allow Zabbix agent to work as root with the user specifying:

AllowRoot=1

Restart the Zabbix agent to apply the changes:

sudo /etc/init.d/zabbix-agent restart

Now go to the Zabbix server.
Create a Postfix template, add data items to it, specifying the type – Zabbix agent, and the keys: postfix.maildrop, postfix.deferred, postfix.incoming, postfix.active, postfix.queue.
Create graphics for the created data items.

You can also create a data item that counts the number of Postfix processes by specifying the type – Zabbix agent, and the key:

proc.num[,postfix]

Also create a trigger that tells when processes 0.

Download the ready template here – Zabbix шаблон для Postfix