Showing posts with label LINUX. Show all posts
Showing posts with label LINUX. Show all posts

Tuesday, April 07, 2015

Rename Interface in Centos 7

Di Centos 7, penamaan suatu interface berbeda jauh sekali, dari yang sebelumnya. Biasanya kan kita kenal interface eth0, eth1 dan seterusnya. Kalo di Centos 7, enp0s3, enp0s8.  Yang tidak terbiasa, tentu kesulitan untuk menghapal penamaan yang baru ini. Bagaimana caranya mengembalikan penamaan interface ke sebelumnya.??
Ifconfig Centos 7 before change interface name

Friday, March 27, 2015

The New Method of Squid to Cache Youtube

This is the last method of Squid that I know to cache youtube. Thanks for someone, his name is.... (sorry I forget his name.) He gave me a link website. And he asked me to try to cache youtube, according the method on the website.
Ok... I have tried it... and I did it... successfully. Hahahaha...
Squid Hit Youtube

Thursday, January 02, 2014

Caching Youtube with Method (100% Working in 2014)

Happy new year. Hopefully in 2014, we are all be healthy and success, always.
This is my first posting in 2014. Now I will discuss about caching google youtube video with Until now, caching youtube video with storeurl method, still 100% working, although not perfectly. Previously, I actually gave up, because 2 weeks before, caching youtube does not work with all methods (including methods storeurl). When the client runs youtube (through a server proxy), youtube error, as shown below. This possibility is from youtube site, there may be changes in the algorithm. Fortunately now no error anymore. Besides youtube, some other video sites can also be cached with this method. For example, dailymotion and so on.

an error occured, please try again later

Sunday, December 01, 2013

Transparent Proxy with Squid 3.3.11 + Ubuntu + Shorewall + Mikrotik (Update)

This is my update posting, about Transparent Proxy with Squid 3.3.x + ubuntu + Shorewall + Mikrotik. Someone told me that the configuration worked but they had TCP_MISS, I was curious. Then I try to re-configure the above experiment with some recent software updates, and this is it.
network transparent proxy mikrotik as router

Network configuration as shown above. I use virtual box to test it. Ubuntu server 13.10, mikrotik 5.20, shorewall, and squid 3.3.11. The instruction how to configure the network above, still same like at previous posting

Monday, July 08, 2013

Re-Detect Network Interface Card in Ubuntu 13.04 and Centos 6.4

After making changes to the Network Interface Card (NIC), and when you run the command ifconfig, network adapters can't up. No visible interface ethernet (eth. ..), only the loopback interface (lo) is visible.

In ubuntu
If using the command "service networking restart", not seen the error. Use the command "ifup eth0", then you will get the error.
Ifup eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit

Cannot find device "eth0"
Error getting hardware address for "eth0": No such device
Failed to bring up ngeri-eth.

Thursday, July 04, 2013

YFI Hotspot Manager on Fedora 18 / 19 and Centos 6.4

Logo YFI hotspot manager
Ok. Back to my experiment. I have spent many days to set up YFI Hotspot Manager, using Fedora 18 64bit, Fedora 19 64bit and Centos 6.4 64bit. If you are using 32 bit, it should be no problem. I didn’t use Ubuntu, because it’s often used. I do not want to be called just copy the post. Although this post reference to posts that already exist.
As usually, I assume a computer already installed, one of these operating systems, Fedora 18 / 19 or Centos 6.4, with a minimum packet. After configuration ethernet, and internet is ok, then continue to the next step.

Tuesday, July 02, 2013

How to Fix Problems in Installing "YFI Hotspot Manager"

YFI hotspot manager error
What do you think about the picture above ?  Yes. The login administrator yfi hotspot manager but there's no box username and password. Did you ever get an error like the picture above?  For me, the error like picture above, appear many times. I have collected many kinds of errors of installing YFI Hotspot Manager and how to fix it. This is all I got when I tried YFI Hotspot manager installation in Ubuntu 12:10 / 13:04, fedora 18/19 and centos 6.4. Do not be afraid, because of these errors. At the time of installation you will not get this much errors, (probably only get 1 or 2 errors only). You even probably will not get an error, if you follow the tutorial how to installing yfi hotspot manager correctly, and carefully. Especially following the tutorial from me ... hahaha ...

Remember this.
Sometimes when you have run the command to correct the error,  nothing can change. Still error / problem. This is because the permission of the selinux.  Make sure, you have disable selinux.
Edit /etc/selinux/config
Let's look at a list of errors and how to fix it.

Sunday, June 09, 2013

Tips Belajar Linux Secara Otodidak

Study linux 1
Posting kali ini, hanya sekedar berbagi tips pengalaman saya yang sedikit ini di dunia Linux. Semoga ini bisa menjadi penyemangat anda dalam mencapai suatu tujuan. Bukan hanya tujuan dalam belajar Linux, tetapi untuk tujuan hidup anda.

Tujuan Belajar Linux
Banyak yang masih ragu dengan Linux. Pastinya anda sering mendengar pertanyaan-pertanyaan klasik (kalau tidak dibilang bodoh), seperti ini. Untuk apa belajar Linux? Apa manfaatnya ? Bukankah sudah ada Windows ? kan sama saja? Untuk apalagi ? malah lebih enak menggunakan Windows, bisa bermain game ? Untuk apa repot-repot belajar Linux ?
Jadi apa tujuannya ? Belajar Linux, masing-masing punya tujuan sendiri.

Thursday, June 06, 2013

How to Fix Problems in Cacti

no graph display in cacti

No graph display, SNMP agent is not installed
This has been discussed in previous posts, and see also how to install SNMP Agent in previous post,

Error    : Can't find file: 'poller_output'
Graph display does not appear, besides the lack of SNMP Agent, it could be due to a full hard drive. Check disk space by using the command

Thursday, May 30, 2013

How to make Squid 3.3.5 as Transparent Proxy Https / Ssl in Centos 6.4

notification security https / ssl
The experiment continues to make transparent proxy https / ssl. Same as previous post. Look at "How to make Squid 3.1.23 as Tproxy (Transparent Proxy) in Centos 6.4". Do the step 1 and 2, ie install shorewall and install dhcp server. Then continue with the next steps.

Tuesday, May 28, 2013

How to make Squid 3.1.23 as Tproxy (Transparent Proxy) in Centos 6.4

squid tproxy as router
From the title, we will only make squid tproxy (transparent proxy), but there are actually 3 work to be done.
1. Configuration of the firewall / shorewall so Linux Centos  will become a router.
2. Make dhcp server, and
3. Install squid as tproxy ( I use squid version 3.1.23 ).
We will work on gradually, so you can easily fix it if there is an error.

Thursday, May 09, 2013

Modify Easyhotspot as Radius Server External

modify easyhotspot

EasyHotspot is an open source software, so it should not matter, if you make modifications. In this post, I will change a little EasyHotspot. And this relates to the previous post, Mikrotik and EasyHotspot as Hotspot, we can’t disconnect user  from radius server / EasyHotspot. so what should we do?
First, we must know how to disconnect the user. General command to disconnect users, in a radius server, including easyhotpsot, using the command radclient.

Monday, May 06, 2013

Mikrotik and EasyHotspot, as Hotspot Billing System

router mikrotik and radius server easyhotspot
In the previous post, we already know about the mikrotik hotspot. And the next experiments, mikrotik hotspot added a EasyHotspot as radius server. Can be seen in the picture. In this experiment, Chillispot and login page, on EasyHotspot, not used and should be removed. Mikrotik will replace the function of Chillispot and login page. Actual merger mikrotik with radius server, I've created, in a project by PT xxx. But I had forgotten what a hotspot billing system used. And it is not archived.

Friday, April 26, 2013

Upgrade Squid Proxy Server, 3.1.22 to 3.3.3

mikrotik router and squid proxy server

A few days ago, suddenly, my squid proxy server (squid version 3.1.22 as transparent proxy) does not work or hangs. Weird... I've checked everything, but no luck. These are I have done,
1. check with command, ps ax | grep squid, ... ok.
2. check in /var/log/error.log, error, running well.
3. check on the firewall, shorewall, normal.
4. check router mikrotik, good.

Wednesday, April 17, 2013

PhpMyPrepaid on Fedora 18

network phpmyprepaid

After installed YFI and Easyhotspot as hotspot system billing, it's time to try another hotspot system billing, and I use Fedora 18 as Operating System. Phpmyprepaid, is interface hotspot system billing designed to work with a MySQL database and FreeRadius. Phpmyprepaid has not developed yet. The final version is phpmyprepaid 0.4-RC3, came out in April 2009. It is the oldest than others. (CMIIW)
Let's to begin.
As usually, after  installing fedora 18 with minimalist package, continue to configure network. Make sure some variable is exist.

Tuesday, April 16, 2013

How to Fix PhpMyPrepaid 0.4.rc3

 Phpmyprepaid in fedora
This is story of my experiment, when install phpmyprepaid 0.4.rc3, on fedora 18. And another "friends" who been installed, were FreeRADIUS version: 2.2, Chillispot version: 1.1, Mysql Server version: 5.5.30. and Apache/2.4.4 (Fedora). It was very difficult to install. A lot of errors that I got. Probably, phpmyprepaid is too old, has long been abandoned, and no support with new things.
let's see list error, so if you find the error again, you know how to fix that…

Friday, April 12, 2013

a little review of Fedora 18

Fedora logo
This is a little review of fedora 18, when I install phpmyprepaid as hotspot billing system in fedora 18. Of course, I consider this interesting and important to build a server.

#yum repolist

Wednesday, April 03, 2013

Easyhotspot in Centos 6.4 + CoovaChilli 1.3.0

In this section, I explain how to modify easyhotspot by adding coovachilli, in Centos 6.4. Usually, installing coovachilli can fix the problem of EasyHotspot login failed which sometimes happens. Before you continue reading this post, look at section easyhotspot with centos 6.4, in this blog. I assume you have been through 2 stages, (1)install apache, php, mysql, and (2) install web easyhotspot.

Install Freeradius 2.1.12.
Actually the same as before in easyhotspot with centos 6.4 section, just a few different configurations. I explain it all so as not to confuse.
yum install freeradius freeradius-mysql freeradius-utils
chkconfig --level 235 radiusd on

Saturday, March 30, 2013

Easyhotspot in Centos 6.4

Actually a lot of to discuss about making this hotspot. But I see it is not discussed fully. And mostly use Ubuntu. I will explain how to make easyhotspot in centos 6.4, based on my experiment.
I divide it into 4 parts, to make it more easily understood.
  1. Install Apache, PHP and Mysql.
  2. Install Web Easyhotspot.
  3. Install Freeradius 2.1.12.
  4. Install Chillispot. 
 1.         Install Apache, PHP and Mysql.
I assume the PC is installed with centos 6.4. In my experiments, centos installed in a minimalist package. Configure the network interface. (Watch carefully, I use 2 lan card, which happened to be detected as eth1 and eth2. Eth1 to use static ip, and the ip dhcp eth2. So please do adjustments IP address, in accordance with the conditions in your network, I know you can do it).
 vi /etc/sysconfig/network-scripts/ifcfg-eth1

httpd: apr_sockaddr_info_get() failed for "hostname"

I found error, when I have installed mod_ssl
Starting httpd: httpd: apr_sockaddr_info_get() failed for NGERI
How to fix,
edit /etc/hosts
In the end, add line