Free and Open Source blogger with an attitude
The previously featured checkip.mypapit.net has been upgrade to JSON. You just need to add /json parameter to get ip address and country code in json format.
http://checkip.mypapit.net/json/
Check http://checkip.mypapit.net/json/ now
As always you can also access the website using ‘cURL’, ‘wget’ or any programming language which supports .json.
000Webhost.com is offering free PHP and MySQL Hosting to those in need those who are looking to simply to test out their PHP projects to the public (hint: Great for students !)
Advantages:
However the free hosting does come with 1 hour downtime per day as an incentive for the users to upgrade. Nevertheless it is still useful for students and hobbyist to test their website on the internet for free!
Nmap (or Network Mapper) is probably the most popular network mapper around. However if you are running a very stable long-term support server, there are chances that your nmap database installation isn’t keep up to that.
Updating Nmap database
Nmap detection database consists of these files:
What you need to do is to download these files from Nmap Github project page and copy it to /usr/share/nmap/ folder.
Alternatively, you can use this script ‘nmap-update.sh’ which I’ve created based on this gist.
Copy all the files to /usr/share/nmap/ once all of them have been downloaded.
(y) (y)
This post is rather a note to myself just in case the next time I want to recompile a new nginx server (I recently compiled a new nginx release in order to enable support for the new brotli encoding and http2 protocol)
The exact file that you need to change is :
/nginx-1.13.7/src/http/ngx_http_header_filter_module.c
Here’s a snippet of what you need to change:
static u_char ngx_http_server_string[] = "Server: yourservername" CRLF; static u_char ngx_http_server_full_string[] = "Server: yourservername/1.0" CRLF; static u_char ngx_http_server_build_string[] = "Server: " NGINX_VER_BUILD CRLF;
replace NGINX_VER and NGINX_VER_FULL with your own string.
Do not redefine NGINX_VER constants as it would be used in various installation scripts after compilation. For example, the Let’s Encrypt “certbot” tool is dependent on the factory setting of NGINX_VER constant.
You can further confuse various network scanners by changing the nginx built-in default error page. Although you can change 4xx and 5xx error page easily in server configuration. Nmap is known to detect nginx installation by looking into the nginx built-in error page.
In order to prevent nmap from further detecting your webserver version and configuration, you can change the default built-in error page using through this file:
/nginx-1.13.7/src/ngx_http_special_response.c
Look for these lines:
static u_char ngx_http_error_full_tail[] = "<p> </p><hr><center>Copyright © 2018 Mohammad Hafiz bin Ismail (mypapit at gmail.com )" CRLF "<br /><small><a href=\"https://blog.mypapit.net\">Mypapit Personal Blog</a></small></center>" CRLF "</body>" CRLF "</html>" CRLF ;
And change the HTML tags accordingly to suit your need, note that you can remove NGINX_VER_BUILD entirely to hide your NGINX version.
You can also customized the built in HTTP code special response, from this :
static char ngx_http_error_502_page[] = "<html>" CRLF "<head><title>502 Bad Gateway</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>502 Bad Gateway</h1></center>" CRLF ;
to include the “Viewport” meta-tag in order to support mobile devices:
static char ngx_http_error_502_page[] = "<html>" CRLF "<head>" CRLF "<link href=\"https://fonts.googleapis.com/css?family=Lato|Slabo+27px\" rel=\"stylesheet\" />" CRLF "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">" CRLF "<title>502 Bad Gateway</title></head>" CRLF "<body>" CRLF "<h1>502 Bad Gateway</h1>" CRLF "<p>Somebody just fucked up at our end :(</p>" CRLF ;
Just make sure you test the nginx configuration after compiling before deploying it in production environment.
A rather complete nginx compiling guide can be found from these websites:
Andy Proehl has compiled a collection of “Maps of Strange Borders” on his flickr account.
His maps are accompanied by description and historical accounts on the reason behind the border are laid that way.
Though most of the maps feature strange borders within United States, the most interesting one lies on the other part of the world.
Visit: Maps of Strange Borders
LLGAL (llgal) is an tool which can automatically generate gallery on your website. llgal is handy if you want to generate photo album out of photos organized in directories/folders.
Running llgal from the console is easy as typing the llgal command at the root directory of your photos.
llgal --exif --li -L -R --title "Album Name" --sx 960 --sy 720 --tx 250 --ty 150
In Ubuntu, the gallery’s theme is located in “/usr/share/llgal/” directory and my customized theme which supports mobile phone can be downloaded here: llgal.zip (mobile enabled)
Personally, i use llgal to generate cctv tiles automatically on my Ubuntu server from which my TP-LINK NC450 and NC250 IP camera uploads through its FTP functions when it detects movements/motion.
llgal can be installed on Ubuntu by running this command
apt -y install llgal
Alternatively you can compile and install llgal directly from its repository
https://github.com/bgoglin/llgal