Category: Network Stuff

Base64 encode on shell

SheldonNo Comments

Sometimes you need to encode a string  with a base64 encoding. For example when trying to send a HTTP request with a Basic Authentication header like that: ### own controller: POST http://thedomain.com/webhook/post?XDEBUG_SESSION_START=11931 Content-Type: application/json Authorization: Basic c25zOlVzZVRoZWZvcmNlCg== { “uuid”: “08e9a8d3-9279-4af5-88ff-ebe42359f0e0”, “eventname”: “peng.page.publish”, “data”: { “sitemap_id”: “1234”, “locale”: “de_DE”, “path”: “unigue/page/path”, “title”: “Testpage over API”, “meta_title”: […]

Setup monit behind Apache proxy under ISPConfig

SheldonNo Comments

Today I wanted to setup monit behind Apache proxy on my webserver, which runs ISPConfig (https://www.ispconfig.org/) under Debian. Monit is a OpenSource monitoring tool for Linux (see https://mmonit.com/monit/). Requirements I had the following requirements on the solution: monit should only be accessible from the server itself (localhost) monit should run under a special SSL-secured URL (not IP:PORT as […]

Export or extract a certificate to or from PFX

SheldonNo Comments

Sometimes you have to deliver or you even get your server certificate files in the pfx file format (personal information exchange, see https://msdn.microsoft.com/en-us/library/windows/hardware/ff549703(v=vs.85).aspx), that is commonly used in Windows based environments. The following paragraphs show, how to export or extract a certificate to or from PFX. Export cert to PFX In order to export the Certificate, Private Key and any […]

Get your public IP via shell

Sheldon1 Comment

To get your public IP you can use websites like www.whatismypublicip.com/ or just google for it (http://lmgtfy.com/?q=public+ip) But you can also get your public IP via the following Linux shell  command (the smart way :-D): $> curl ifconfig.me/all This gives you an output like that: ip_addr: 31.18.198.134 remote_host: ip123456.dynamic.kabel-deutschland.de user_agent: curl/7.35.0 port: 47745 lang: connection: keep_alive: encoding: […]

“Could not resolve host” error

SheldonNo Comments

If you get this error message when trying to update the system (see example below) or just pinging an external host … $> sudo pacman -Syu :: Synchronizing package databases… error: failed retrieving file ‘core.db’ from mirror.archlinuxarm.org : Could not resolve host: mirror.archlinuxarm.org error: failed to update core (download library error) error: failed retrieving file ‘extra.db’ […]