During the COVID19 remote working surged and it became the only way to continue working in some cases.
For people working abroad, making phone calls is inconvenient and very expensive “Depending on where you are and the destination country”
Since I’m working in Italy in a consulting firm, I decided to remove this limit by purchasing an unlimited calls package to Italy “2000 minutes included, then they charge a per minute rate”
Notte: This article assumes you already know what is the NTP protocol and its related concepts.
Configuring a cisco IOS router as an NTP client requires implementing the below commands,
1. Setting up the timezone, in this case we’ll consider Italy’s timezone which is CET (GMT +1)
We’ll set the dayklight savins using the summer time-zone command
clock timezone CET 1
clock summer-time CEST recurring
2. Configuring the NTP server & it can be inserted as an IP in case it’s an internal Server or a public server with a static IP
The site has been moved to a more robust hosting solution, The overall experience should be improved & more articles will follow.
Stay around! 🙂
When using a dual touch screens on ubuntu, the touch may not be mapped correctly to the monitor and it may span both screens as input and only 1 monitor as an output.
Or simply touching any of them will result in having the input on the same screen (Relatively).
So, In order to apply a fix for this issue, The touch input should be mapped to the correct monitor
We may use 2 linux apps to list this info.
1. xinput is used for listing the input devices
2. xrandr is used to show/set the size, orientation and/or reflection of the outputs for a screen. It can also set the screen size.
Recently while configuring a logstash pipeline,I’ve been through an error that was a bit tricky to find since it was referring to a missing plugin named ‘else’.
Searching the issue a bit didn’t show much help, So I hope this saves couple hours/minutes trying to find out the root cause.
Here’s an interesting part from the Exception Message
The given configuration is invalid. Reason: Couldn’t find any filter plugin named ‘else’…
Ever had lots of screenshots that you liked to index and search?
Well, this is the objective of this post. We’ll use minimal code “Just enough to get things working”
To do so, Some python Libraries and their dependencies should be installed 1st
Well, Mapping a URL Path to a directory can be useful in many scenarios,
Ex:
The Vulnerability as explained in https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.html relies in executing high number of requests, So by temporarily applying rate limiting, the impact of this vulnerability maybe mitigated using various methods one of them is by using Modsecurity until a fix is released.
Other References:
https://wpvulndb.com/vulnerabilities/9021
https://baraktawily.blogspot.fr/2018/02/how-to-dos-29-of-world-wide-websites.html
https://github.com/quitten/doser.py
https://thehackernews.com/2018/02/wordpress-dos-exploit.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6389
A dummy interface maybe created for various reasons like:
A very simple script that uses ipcalc capabilities to parse a list of IPs or networks an outputs a list of readable Network IDs with their subnet masks.
#!/bin/bash
AUTHOR=AHMED
Blog=”Networks.Guru”
When a license “Support Contract” expires on an F5 appliance whether if it’s a Physical or a Virtual appliance, there’s no effect/disruption to the production environment configured on the device itself.
When the support contract is expired the impact is described below,
– If you come across a software issue or bugs, then you will not be able to upgrade
– No support/assistance will be provided by the vendor related to the appliance.
It’s usually advised to contact the support in case of any doubts.
The current value of the wireless card’s TX-Power can be verified using the below command
user@pc:~ $ iwconfig
wlan0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
user@pc:~ $ iw reg get
country GB: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A)
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS
(5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
(57000 - 66000 @ 2160), (N/A, 40), (N/A)
The Tx-Power value is in dBm “Decibel (referenced to milliwatts)” This value can be converted to milliwatts using this function
P(mW) = 1mW â‹… 10(P(dBm)/ 10)
Before changing the value of the Tx-Power, You need to make sure that you comply with the legal limits within your country and you’ll not end up frying the wireless card
The below commands can be used to change the current value of the transmission power
The max value cannot be set over the limit specified by the assigned country’s regulations
So, for education Purpose only the country may be set to a country allowing higher Transmission power “ex: Bolivia <BO>”
ifconfig wlan0 down
iw reg set BO
ifconfig wlan0 up
iwconfig wlan0 txpower 30
So, By verifying the results of the last commands, we see that the values have been set successfully
user@pc:~ $ iwconfig wlan0
wlan0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=30 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
user@pc:~ $ iw reg get
country BO: DFS-JP
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5250 - 5330 @ 80), (N/A, 30), (0 ms), DFS
(5735 - 5835 @ 80), (N/A, 30), (N/A)
Starting with the video,
Continuing with the road-map and the correspondent steps
1- Install iouyap
sudo apt-get install git bison flex
git clone http://github.com/ndevilla/iniparser.git
cd iniparser
make
sudo cp libiniparser.* /usr/lib/
sudo cp src/iniparser.h /usr/local/include
sudo cp src/dictionary.h /usr/local/include
cd ..
git clone https://github.com/GNS3/iouyap.git
cd iouyap
make
sudo make install
2- Install vpcs
sudo apt-get install vpcs
3- Add IOU virtualbox image
-Change hostname
-Config static IP
-Add 2nd Interface
-Edit Sources.List
-Install Python2.7
4-Connecting IOU VM to GNS3
5-Running and Testing the new setup
Finally, Please note that the .iourc file has been uploaded with the correct type later on before continuing with the vid.
Starting with the video,
The commands used in this video below,
before starting with the installation , Please confirm that you have Python 3.3 or more using this command  python3 -v if not please download and install it either by visiting python’s website or by using the below command
sudo apt-get install python3.4.3
also make sure that gcc is installed using
sudo apt-get install gcc
GNS3 GUI – Part1 :
sudo apt-get install python3-setuptools
sudo apt-get install python3-pyqt4
cd gns3-directory
sudo python3 setup.py install
GNS3 Server – Part2:
sudo apt-get install python3-setuptools
sudo apt-get install python3-netifaces
cd gns3-directory
sudo python3 setup.py install
Dynamips – Part3:
sudo apt-get install cmake
apt-get install libelf-dev
apt-get install uuid-dev
cd dynamips-directory
mkdir build
cd build
sudo cmake ..
sudo make install
If you like the video Please press like & subscribe, Also your feedback is most welcomed,,,
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