Syed Jahanzaib Personal Blog to Share Knowledge !

March 28, 2016

Mikrotik with Freeradius/mySQL – Change IP Pool After Expiration # Part-3

Filed under: freeradius — Tags: , — Syed Jahanzaib / Pinochio~:) @ 4:19 PM

expire

FREERADIUS WITH MIKROTIK – Part #1

FREERADIUS WITH MIKROTIK – Part #2

Part # 3 > You are here …


 

Personnel Note:

This is another post about freeradius. My aim is to let people know that creating your own Radius Billing system is not ROCKET SCIENCE as some PRO in the industry try to pose. You can do it as well, the only thing required is the ultimate passion to achieve the goal. And with the right search, reading, understanding logic’s, you can do all on your own. I strongly encourage to read the FR mailing list and Google.


 

Scenario:

It is required that when user account expires, he can still login but he should get IP from ‘expired pool’ so that we can redirect him to payment reminder page or route/manage in some other customized way via NAS.

 

1- FREERADIUS Section:

For this purpose we will modify the EXPIRATION module. as mentioned below.

nano /etc/freeradius/sites-available/default

Add or modify


expiration{
userlock = 1
}
if(userlock){
ok
update reply {
Reply-Message := "Your account has expired, %{User-Name} / Reason: DATE LIMIT REACHED / zaib"
Framed-Pool := "expired-pool"
}
}

Save & Exit.

 

Now add the user ‘expiration‘ in radcheck table using mysql


INSERT INTO `radius`.`radcheck` (
`id` ,
`username` ,
`attribute` ,
`op` ,
`value`
)
VALUES (
NULL , 'zaib', 'Expiration', ':=', '28 Mar 2016 15:35'
);

Note that I am using Expiration Date along with exact time as well. This can also be used to reduce receiving annoying customer call whose account expires default in night at 00:00 hours as default expiration is done in night and user will have no where to contact as in late night no one pick help support calls in DCN.

OR PHPMYADMIN as showed below …

1- exp


2- Mikrtoik Section

Add new IP pool with the name of ‘expired-pool‘ (or as mentioned in Framed-Pool section)


/ip pool

add name=expired-pool ranges=192.168.100.1-192.168.100.255

2-exp pool


Now try to login with user (which expiry date(time) have passed. and you will observe that user will still be able to login but he will get ip from the expired pool, and NAS will handle the request afterwards, either to redirect to expired pool, or some other customized action : )

Result:

 

3- exp radclient

win-login


Regard's
Syed Jahanzaib

 

March 25, 2016

Mikrotik with Freeradius/mySQL – Change on the FLY with COA # Part-2

Filed under: freeradius — Tags: , , , , — Syed Jahanzaib / Pinochio~:) @ 4:58 PM

ggggg
~ COA Implementation in Freeradius 2.x for Mikrotik ~
! A wild goose-chase! From the CORE of the FREERADIUS !

By
Syed jahanzaib

FREERADIUS WITH MIKROTIK – Part #1

FREERADIUS WITH MIKROTIK – Part #2 > YOU ARE HERE

FREERADIUS WITH MIKROTIK – Part #3


Personnel Note:

This is another post about freeradius. My aim is to let people know that creating your own Radius Billing system is not ROCKET SCIENCE as some PRO in the industry try to pose. You can do it as well, the only thing required is the ultimate passion to achieve the goal. And with the right search, reading, understanding logic’s, you can do all on your own. I strongly encourage to read the FR mailing list and Google


 

 

Recently I was doing some lab testing on the Freeradius System and got stuck with the configuration of COA (change of authority) so that any changes like disconnection OR bandwidth package change on the FLY without disconnecting the active user, example different bandwidth for day/night or slower speed package for over quota user.

I made some workaround like BASH scripts which checks mysql for quota usage vs used data and disconnect users or change package via radclient coa. But I didn’t wanted to get involved in bash scripting , although using bash script have many other benefits as well like sending sms to user, email, or any other customized action. B

But still exploring COA was essential for some instant functionality.

Finally after few days R&D and some FR mailing list digging, I have managed to make COA on FR to work with Mikrotik 🙂 Alhamdolillah.

I assume you have working setup of Freeradius with the Mikrotik.


 

Before going into details. READ THIS IF YOU DON’T WANT TO get involve in Wild-Goose chase !

  1. These rough posts are not for the beginners, If you are a beginner by any chance , read below…
  2. First read what Freeradius system really is. understand the logic’s and terminologies. Without proper understanding, you will be doing a wild-goose chase for sure.
  3. Take following guide as an example only. This is by no means a complete production-ready guide. But just to begin the journey only. LAB testing you can refer.
  4. Don’t just copy paste the code blindly, they are for reference purposes only.
  5. Read it again and again, try to understand.
  6. Take Help from ‘Uncle Google‘ if you stuck at any point.

SCENARIO:

  • Mikrotik ver 6.34.x : 101.11.11.255
  • Mikrotik Radius Incoming : Enabled with Default Port 3799
  • Freeradius 2.1.10 : 101.11.11.245
  • OS = Ubuntu 12.4 / 32bit with apt-get base freeradius installation

We have user on FR with following credentials.

  • ID = zaib
  • Bandwidth Allowed = 1024k/1024k
  • Daily Quota Allowed [Test] = 1 MB
  • Bandwidth for Over Quota Users [For the DAY) = 512k/512k
  • [Will revert back to 1024k on next date change]
 t1 t2

Now we want that when user ‘zaib‘ consumes 1 MB in a day, his bandwidth should drop to 512k for the rest of the day. and all of these changes should be done on the FLY, without disconnecting the user using the COA : )~ , yeah that’s what its made for. and when the date changes, he should revert back to 1024 k.


1- SQL Daily Counter

First make the counter for daily traffic

nano /etc/freeradius/modules/sqlcounter_expire_on_login

and add following code

sqlcounter dailyquota {
            counter-name = Mikrotik-Total-Limit
            check-name = Mikrotik-Total-Limit
            reply-name = Mikrotik-Total-Limit
            sqlmod-inst = sql
            key = User-Name
            reset = daily
# This query will take data for today DATE only, It caused 4 hours of RnD and HEADACHE to me. What kind of retard person I am ! Ughhh. ZAIB
            query = "SELECT SUM(acctsessiontime - GREATEST((%b-UNIX_TIMESTAMP(acctstarttime)), 0)) FROM radacct WHERE username='%{%k}' AND UNIX_TIMESTAMP(acctstarttime) + acctsessiontime > '%b'"

Save & Exit.


2- Adding Counter reference in AUTHORIZE + ACCOUNTING Section

Now we will add the counter in AUTHORIZE { section and also add the UNLAG statement in the ACCOUNTING{ section to match if the quota is above or less and take action depend on the result.

nano /etc/freeradius/sites-enabled/default

Add following under AUTHORIZE { section.

authorize {

dailyquota {
reject = 1
}
if (reject) {
ok
update reply {
Mikrotik-Rate-Limit := "512k/512k"
Reply-Message := "You have reached your transfer limit. Enforcing FUP Package - zaib"
}
}

Now add following under ACCOUNTING { section (in same file) UNLAG Query for matching True or False.

# CHECK OVER QUOTA USAGE
update control {

# Used QUOTA Value
Tmp-Integer-0 := "%{sql:SELECT (SUM(acctinputoctets)+SUM(acctoutputoctets)) AS Total FROM radacct where acctstarttime >= CURDATE() AND radacct.username='%{User-Name}'}"

# Value of FUP Bandwidth limit that is 512k, It is stored in a separate table 
Tmp-String-5 := "%{sql: SELECT value FROM fup WHERE attribute='Mikrotik-Rate-Limit' AND username='%{User-Name}'}"

#Value of Actual QUOTA Allowed
Tmp-String-1 := "%{sql:  SELECT value FROM radcheck WHERE attribute='Mikrotik-Total-Limit' AND username='%{User-Name}'}"

Tmp-String-3 := "%{sql:select calledstationid from radacct where acctsessionid='%{Acct-Session-Id}'}"
}

if ("%{control:Tmp-Integer-0}" > "%{control:Tmp-String-1}"){
# Update COA to Mikrotik
    update coa {
    User-Name = "%{User-Name}"
    Acct-Session-Id = "%{Acct-Session-Id}"
    NAS-IP-Address = "%{NAS-IP-Address}"
    Framed-IP-Address = "%{Framed-IP-Address}"
    Mikrotik-Rate-Limit = "%{control:Tmp-String-5}"
}
}
}

3- Enable ORIGINATINE-COA FILE

Edit file /etc/freeradius/sites-available/originate-coa and add/modify  following


home_server localhost-coa {
type = coa
ipaddr = 101.11.11.255
port = 3799
secret = 12345
coa {
irt = 2
mrt = 16
mrc = 5
mrd = 30
}
}


4- Add COA HOME Server Entry in clients.conf

Add your Mikrotik in clients.conf as well.

 nano /etc/freeradius/clients.conf

and add following.

This example have Mikrotik as NAS, and COA Separately.


# Mikrotik as NAS entry  / zaib

client 101.11.11.255 {

port            = 1700

secret          = 12345

shortname       = Mikrotik }

# COA Section / zaib , what a headache it was to enable COA, I am Quite a DUFFER for Sure : D

home_server example-coa {

type = coa

ipaddr = 101.11.11.255

port = 3799

secret = 12345

coa {

irt = 2

mrt = 16

mrc = 5

mrd = 30

}

} 

DEBUG is the KEY to SUCCESS ! Allah Shuker

Now Restart FREERADIUS in DEBUG mode by

freeradius -X

Now you will see that when user zaib connected, his package was intially 102k. as soon he crosses his quota , FR will send COA (by using the update-control script) to mikrotik and package will be changed dynamically instantly.


 

See following snapshots.

 

1- When user first connected, his package was 1024k.

1

 

1- When user consumes his quota, FR counted and send COA to mikrotik to drop the package to 512k on the FLY.

1-2

 

3- Mikrotik received COA and re-acted properly.

2


DISCONNECT USER VIA DISCONNECT MESSAGE FROM FR TO MIKROTIK

In above example we only changed the bandwidth package. If you want to disconnect user, you can simply use the disconnect message as well. [in accounting section]

Example Code:


if ("%{control:Tmp-Integer-0}" > "%{control:Tmp-String-1}"){

# Update COA, If above statement matches, then execute below ...

#    update coa {

update disconnect {

User-Name = "%{request:User-Name}"

}

}

}


 

Salam Alykum!

SYED JAHANZAIB

 

March 11, 2016

Mikrotik with Freeradius/mySQL # Part-1

Filed under: freeradius — Tags: , , , , , — Syed Jahanzaib / Pinochio~:) @ 3:42 PM

fre


FREERADIUS WITH MIKROTIK – Part #1 > YOU ARE HERE

FREERADIUS WITH MIKROTIK – Part #2 >

FREERADIUS WITH MIKROTIK – Part #3


Personnel Note:

This is another post about freeradius. My aim is to let people know that creating your own Radius Billing system is not ROCKET SCIENCE as some PRO in the industry try to pose. You can do it as well, the only thing required is the ultimate passion to achieve the goal. And with the right search, reading, understanding logic’s, you can do all on your own. I strongly encourage to read the FR mailing list and Google


Make your own Billing system in Linux with Freeradius 2.1.10 / MySQL 5.5.47
# Part-1

[This Guide will be updated with many further supporting posts)

The aim of writing this post was that there are number of radius products available on the internet with lots of features, each have some unique features. But this is also true that none of them is 100% perfect for every type of ISP. The reason is that every ISP/Network have different sort of local requirements and billing mode. If you ahve searched on google you will find that there are tons of guides for freeradius implementation, but most of them have either incomplete data , or difficult explanation, or does not meet the practical requirements of Desi ISP. Thats why I started this guide so that info that is not common on the net can be shared here. plus most important you can learn on your own using this baby step.

In this post I have made some quick guide to install a very basic level of billing system by using Freeradius/mysql on UBUNTU 12.4 [32bit]. Mikrotik is being used as NAS to connect user and freeradius will be used for authentication/accounting billing system.

Quick Code to get started.

Radius IP = 101.11.11.245
Mikrotik IP = 101.11.11.255

Let’s Rock …


 

First Update Ubuntu (12.4  32bit) and install the required modules

# Update Ubuntu First
apt-get update

# Install Required pre requisites modules
apt-get -y install apache2 mc wget rcconf make gcc mysql-server mysql-client libmysqlclient15-dev libperl-dev curl php5 php5-mysql php5-cli php5-curl php5-mcrypt php5-gd php5-snmp php5-common php-pear php-db libapache2-mod-php5 php-mail

# Now install FreeRADIUS Version 2.1.10 package, default in Ubuntu 12.4 32bit
apt-get install freeradius freeradius-mysql freeradius-utils

This may take some moments as average of 100+MB will be downloaded from the net and will be installed automatically. Sit back and relax.

After update/installation of components done, Proceed to MYSQL configuration below ..,


 

MYSQL  CONFIGURATION:

 

Create Freeradius Database in MYSQL

Now create Freeradius Database in mySQL.

Login to mysql (use mysql root password that you entered in above steps)

mysql -uroot -pzaib1234
create database radius;
grant all on radius.* to radius@localhost identified by "zaib1234";

Import Freeradius Database Scheme in MYSQL ‘radius’ DB

Insert the freeradius database scheme using the following commands, Make sure to change the password ####


mysql -u root -pzaib1234 radius < /etc/freeradius/sql/mysql/schema.sql
mysql -u root -pzaib1234 radius < /etc/freeradius/sql/mysql/nas.sql

Create new user in MYSQL radius database (For Testing Users)

User id = zaib
Password = zaib
Rate-Limit = 1024k/1024k

mysql -uroot -pzaib1234
use radius;
INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES ( NULL , 'zaib', 'user-password', '==', 'zaib');
INSERT INTO radreply (username, attribute, op, value) VALUES ('zaib', 'Mikrotik-Rate-Limit', '=', '1024k/1024k');
exit

Note:
You can skip the Framed-IP-Address part or modify it as per required.


FREERADIUS CONFIGURATION:

SQL.CONF

Edit following file  /etc/freeradius/sql.conf

nano /etc/freeradius/sql.conf file

Change the password to zaib1234 (or whatever you set in mysql if required) and Uncomment the following

readclients = yes

So some portion of the file may look like following, after modifications

# Connection info:
server = "localhost"
#port = 3306
login = "radius"
password = "zaib1234"
readclients = yes

sql-mod

Save and Exit the file


/etc/freeradius/sites-enabled/default

Now edit the /etc/freeradius/sites-enabled/default

nano /etc/freeradius/sites-enabled/default

Uncomment the sql option in the following sections

accounting

# See “Authorization Queries” in sql.conf

sql

session

# See “Authorization Queries” in sql.conf

sql

Post-Auth-Type

# See “Authorization Queries” in sql.conf

sql

[/sourcecode]

Save and Exit the file


RADIUSD.CONF

Now edit /etc/freeradius/radiusd.conf file

nano /etc/freeradius/radiusd.conf

#Uncomment the following option

$INCLUDE sql.conf

Save and exit the file


/etc/freeradius/sites-available/default

Last but no least , edit /etc/freeradius/sites-available/default

nano /etc/freeradius/sites-available/default

Search for LINE

#  See “Authorization Queries” in sql.conf

and UN-COMMENT the SQL word below it.

Example After modification

#  See “Authorization Queries” in sql.conf

sql

Save and exit.


ADDING ‘NAS’ [Mikrotik] in CLIENTS.CONF

 

To accept connectivity of Mikrotik with the Freeradius, we need to add the mikrotik IP and shared secret in clients.conf

Edit  /etc/freeradius/clients.conf

nano /etc/freeradius/clients.conf

and add following lines at bottom

client 101.11.11.255 {
secret          = 12345
shortname       = Mikrotik

Note: Change the IP /Secret according to your Mikrotik Network Scheme.


 

TESTING USER AUTHENTICATION ON FREERADIUS:

Now stop the free radius server <pre>

/etc/init.d/freeradius stop

and start in DEBUG mode so that we can monitor for any errors etc

freeradius -X

Now OPEN another TERMINAL/CONSOLE window and issue following command to TEST USER AUTHENTICATION

radtest zaib zaib localhost 1812 testing123

and you should ACCESS-ACCEPT MESSAGE as below …

root@ubuntu:~#  radtest zaib zaib localhost 1812 testing123

Sending Access-Request of id 38 to 127.0.0.1 port 1812
User-Name = "zaib"
User-Password = "zaib"
NAS-IP-Address = 101.11.11.245
NAS-Port = 1812
rad_recv: Access-Accept packet from host 127.0.0.1 port 1812, id=38, length=39
Mikrotik-Rate-Limit = "1024k/1024k"

mt

 

:~) Alhamdolillah


 

MIKROTIK SECTION:

I assumed you already have pppoe server configured and running.

Add Radius Entry as showed in the images below …

nas1

nas2


 

TEST FROM CLIENT WINDOWS PC:

Create pppoe dialer at client end, and test the user ID created in earlier steps.

c1

Once it will be connected, you can see entries in Mikrotik LOG / Active Users Session.
As showed in the image below …

ml1

and dynamic queue of 1mb will also be created (that we added in attributes section in radius/mysql)

queue


DISCONNECT Active USER : COMMAND FROM RADIUS

If you want to disconnect a single active connected user , use following command (many other methods available as well)

 

echo user-name=zaib | radclient -x 101.11.11.255:1700 disconnect 12345

Result

discon command

dc

disconnect user


Preventing Simultaneous Use by using simultaneous-Use attribute

To LIMIT USER SIMULTANEOUS SESSION:

INSERT INTO `radcheck` (`id` ,`username` ,`attribute` ,`op` ,`value` )
VALUES (NULL , 'zaib', 'MD5-Password', ':=', MD5( 'zaib' ) ),
(NULL , 'zaib', 'Simultaneous-Use', ':=', '1');

Result of above attributes:

already


Add Calling-Station-Id attribute to restrict mac CALLED ID

If we want to restrict bind user name with specific mac address, first edit

nano /etc/freeradius/sites-enabled/default

and un comment following attribute “checkval“, Example is below …

checkvalsave and restart radius.

Now login to mysql , select radius database, and use below command to add user, with mac address.

INSERT INTO `radius`.`radcheck` (`id` ,`username` ,`attribute` ,`op` ,`value`)
VALUES (
NULL , 'zaib', 'Calling-Station-Id', ':=', '12:34:56:78:70:00'
);

If user uses different station to connect with this ID he will be rejected as showed in the image below …

phpadmin

 

reject-mac-wrong

 


Add Static IP Address and Pool in radreply group.

To Assign user FIX IP Address, use following …

INSERT INTO radreply ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Framed-IP-Address', '=', '1.2.3.4');

To Assign user IP from POOL, use following …

INSERT INTO radreply ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Framed-Pool', '=', '512k-pool');

 


Adding Expiration Date for user

If you want to Expire the Account after XX days, you can use following

INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Expiration', '=', '13 Mar 2016');

In above Example User will expires on 13th March, 2016 at 00:00 [Midnight].

If you want to EXPIRE user at some other specific Time, use following format in time

INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Expiration', '=', '13 Mar 2016 08:00');

ZAIB 🙂 GOT IT


Limit User Total Online time (Access by Period) Started from first login

If you want to start user online time (like in hours) but it should be calculated from first access, then use following.

edit the file /etc/freeradius/sites-enabled/default

nano /etc/freeradius/sites-enabled/default

and add following under “authorize { section

accessperiod

so that it may look like below …

default

now edit file /etc/freeradius/modules/sqlcounter_expire_on_login

nano /etc/freeradius/modules/sqlcounter_expire_on_login

and add following

sqlcounter accessperiod {
counter-name = Max-Access-Period-Time
check-name = Access-Period
sqlmod-inst = sql
key = User-Name
reset = never
query = "SELECT IF(COUNT(radacctid>=1),(UNIX_TIMESTAMP() - IFNULL(UNIX_TIMESTAMP(AcctStartTime),0)),0) FROM radacct WHERE UserName = '%{%k}' AND AcctSessionTime >= 1 ORDER BY AcctStartTime LIMIT 1"
}

now add user attribute in radchceck table (Following is 1 hour Uptime limit example, and it will start after first login)

INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Access-Period', '=', '3600');

Once the time period is over, user will be disconnected.


 

Limit User Total Online time , Example one hour, which can be used in parts as well.

If we want to allow user one hour which user can use in parts as well, like ten minutes now, then next day he can use rest of his available time.  Use following

edit the file /etc/freeradius/sites-enabled/default

nano /etc/freeradius/sites-enabled/default

and add following under “authorize { section

Max-All-Session

now edit file /etc/freeradius/modules/sqlcounter_expire_on_login

nano /etc/freeradius/modules/sqlcounter_expire_on_login

and add following

sqlcounter timelimit {
counter-name = Max-All-Session-Time
check-name = Max-All-Session
sqlmod-inst = sql
key = User-Name
reset = never
query = “SELECT SUM(AcctSessionTime) FROM radacct where UserName=’%{%k}'”
}

Save and Exit.

Now add user attribute in radchceck table (Following is 1 hour Uptime limit example, which can be used in parts as well no first login applied here)

INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Max-All-Session', '=', '3600');

QUOTA LIMIT FOR USER with CUSTOM MEANINGFUL REJECT REPLY MESSAGE

To limit user data volume limit (either daily, weekly or monthly) use below code.

edit the file /etc/freeradius/sites-enabled/default

nano /etc/freeradius/sites-enabled/default

and add following under “authorize { section

totalbytecounter{
reject = 1
}
if(reject){
update reply {
Reply-Message := "ZAIB-RADIUS-REPLY - You have reached your bandwidth limit"
}
reject
}

now edit file /etc/freeradius/modules/sqlcounter_expire_on_login

nano /etc/freeradius/modules/sqlcounter_expire_on_login

and add following

sqlcounter totalbytecounter {
                counter-name = Mikrotik-Total-Limit
                check-name = Mikrotik-Total-Limit
                reply-name = Mikrotik-Total-Limit
                sqlmod-inst = sql
                key = User-Name
                reset = never
                query = "SELECT ((SUM(AcctInputOctets)+SUM(AcctOutputOctets))) FROM radacct WHERE UserName='%{%k}'"
}

Save and Exit.

Now add user attribute in radchceck table (Following is 1 MB total data limit example, which can be used in parts as well )

Note: Value is in bytes, so use it accordingly

INSERT INTO radcheck ( id , UserName , Attribute , op , Value ) VALUES (NULL , 'zaib', 'Mikrotik-Total-Limit', '=', '1000000');

Once the user quota over, he will get access deny message, and in radius log, you can see following 🙂

radreply

Note:

There is a problem with above attribute. Radius will not AUTO disconnect user once he reaches his limit. he will continue to use his account. he will only be denied further login on his next login attempt.

Following is an workaround for it.

Make the following bash script. It will check for online users, and will check if those users have quota limit using ‘Mikrotik-Total-Limit’ attribute. Then it will check there usage against quota limit. If it will found above quota, it will simply disconnect users, else ignore. You can add this script in crontab to run every X minutes.


#!/bin/bash
#set -x
# HEADER -----------
# SCRIPT to fetch data of active radius users into file, then check there quota limit against there usage.
# if quota is over , disconnect them.
# Syed Jahanzaib / aacable@hotmail.com / https://aacable.wordpress.com
# 17-MAR-2016

# Setting FILE Variables
TMPFILE="/tmp/activeusers"
FINALFILE="/tmp/finalfile"

# Make list of ONLINE USERS using radwho command, very handy 🙂
radwho  | awk '{print $2}' | sed '1d' > $TMPFILE
# if you fail to configure radwho, then use following
# mysql -uroot -pSQLPASS --skip-column-names -e "use radius; SELECT username FROM radacct WHERE acctstoptime IS NULL;" | cut -f1 -d/ 

# Mikrotik NAS Details
NAS="101.11.11.255"
NASPORT="1700"
SECRET="12345"
CURDATE=`date`

# MYSQL user credentials
SQLUSER="root"
SQLPASS="zaib1234"

# Apply Formula to get QUOTA limit data for each user in $FINALFILE (EXCLUDING USER WHO DONT HAVE ANY QUOTA LIMIT USING MIKROTIK-TOTAL-LIMIT ATTRIBUTE)
num=0
cat $TMPFILE | while read users
do
num=$[$num+1]
ACTIVEID=`echo $users | awk '{print $1}'`
mysql -u$SQLUSER -p$SQLPASS --skip-column-names -e "use radius; SELECT username,value FROM radcheck WHERE attribute='Mikrotik-Total-Limit' AND username='$ACTIVEID';" > $FINALFILE
done


# Apply Formula to get username and QUOTA LIMIT from $FINALFILE and check there usage againts assigned quota
num=0
cat $FINALFILE | while read users
do
num=$[$num+1]
username=`echo $users | awk '{print $1}'`
QLIMIT=`echo $users | awk '{print $2}'`
QUSED=`mysql -u$SQLUSER -p$SQLPASS --skip-column-names -e "use radius; SELECT ((SUM(AcctInputOctets)+SUM(AcctOutputOctets))) FROM radacct WHERE UserName='$username'"`

# PRINT GENERAL INFO
echo "------ $CURDATE"
echo "$username QUOTA LIMIT= $QLIMIT"
echo "$username QUOTA USED= $QUSED"

# IF QUOTA IS ABOVE LIMIT, DISCONNECT USER USING RADCLIENT OR YOU CAN CHANGE THE USER SERVICE AS WELL 🙂 / zaib
if [ $QUSED -gt $QLIMIT ]
then
echo "QUOTA REACHED! Disconnecting $username from NAS $NAS"
echo user-name=$username | radclient -x $NAS:$NASPORT disconnect $SECRET

# ELSE JUST SHOW USER USED DATA WHICH IS IN LIMIT AT A MOMENT / zaib
else
echo "$username quote is under Limit"
echo "------"
fi
done

> $TMPFILE
> $FINALFILE
# SCRIPT END / Syed Jahanzaib

script-quota

Allah Shuker 🙂


BANDWIDTH CHANGE ON THE FLY – CHANGE OF AUTHORITY (COA) _for pppoe_

To change bandwidth speed for already connected users ON THE FLY , means without disconnecting him. Use following code. Its well tested with Freeradius 2.x and Mikrotik 6.34.2

Change the User Name / Rate Limit/ Mikrotik IP  and PORT/SECRET as per network.

echo User-Name := "zaib", Mikrotik-Rate-Limit = 512k/512k | radclient -x 101.11.11.255:1700 coa 12345

cOA


CHANGE BANDWIDTH PACKAGE TO LOWER AFTER DAILY QUOTA REACH

If you want to enforce FUP (fair usage policy) like if 1mb speed allowed user consumed X MB in a day, then his bandwidth package should DROP to lower speed, e.g: 512k for that day.

Add the COUNTER for daily counting

nano /etc/freeradius/modules/sqlcounter_expire_on_login


counter-name = Mikrotik-Total-Limit
check-name = Mikrotik-Total-Limit
reply-name = Mikrotik-Total-Limit
sqlmod-inst = sql
key = User-Name
reset = daily
query = "SELECT SUM(AcctInputOctets)+SUM(AcctOutputOctets) FROM radacct WHERE UserName='%{%k}'"
}

Now add the action for the above counter in sites-available (or enable) file

nano /etc/freeradius/sites-available/default


dailyquota {
reject = 1
}
if (reject) {
ok
update reply {
Mikrotik-Rate-Limit := "512k/512k"
Reply-Message := "You have reached your transfer limit. Limited bandwidth"
}
}


Get Online User Names

mysql -uroot -pSQLPASS --skip-column-names -e "use radius; SELECT username FROM radacct WHERE acctstoptime IS NULL;" | cut -f1 -d/ | sort | uniq -d

Regard’s

Syed Jahanzaib

 

 

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