Updated: 18th November, 2014
If you have dmasoftlab radius manager’s SELF REGISTRATION option enabled, and the user is unable to see the captcha image while trying to self register his account then check following.
Make sure /var/www/radiusmanager/tmpimages folder do exists, (this path is valid for Ubuntu , But
If you have Centos/Fedora then try with /var/www/html/radiusmanager/tmpimages
If tmpimages is not present then create it, and assign it proper permissions for the WEB server user.
Example: [ubuntu]
- mkdir /var/www/radiusmanager/tmpimages
- chown www-data /var/www/radiusmanager/tmpimages
.
Example: [Centos, Fedora]
- mkdir /var/www/html/radiusmanager/tmpimages
- chown apache /var/www/html/radiusmanager/tmpimages
Now check again and you will see the images showing properly.
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Regard’s
Syed Jahanzaib
Syed Jahanzaib Personal Blog to Share Knowledge ! 
Dear Syed Jahanzaib Ji,
We are facing a severe attacking issue in the network. We are hosting some webserver, mail server and protect tracking systems in our data center. All the servers are connected from a mikrotik router. Now the problem is suddenly the router utilization is going 100% and there is and abnormal bandwidth usage in the network. When we torch, there are so many sessions coming from chinese IP. Please find the attached screen shots for your reference. Request you to please help on resolving the issue,
-Pradeep[image: Inline image 2][image: Inline image 1]
On Thu, May 29, 2014 at 1:31 PM, Syed Jahanzaib Personnel Blog to Share
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Comment by pradeep vardhineni — May 29, 2014 @ 4:25 PM
unable to see any image. better to email me [ aacable at hotmail.com ]
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Comment by Syed Jahanzaib / Pinochio~:) — May 29, 2014 @ 7:43 PM
The best way is to DENY ALL INCOMING TRAFFIC for WAN interface and allow only relevant ports or traffic to get inside. trust me This will save you from lots of hurdles.
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Comment by Syed Jahanzaib / Pinochio~:) — May 29, 2014 @ 7:50 PM