Posted by jpluimers on 2016/01/09
Interesting:
During the last weeks I finally got my hands dirty with IPv6. A comment on my blog and an email informed me that my server (hosting this blog) is not reachable via IPv6, albeit it has an IPv6 address. That said, I tried to get that running and fell into several holes, due to firewalls, […]
Source: Fighting with IPv6 – There and back again
Posted in *nix, *nix-tools, Apache2, iptables, Linux, Power User | Leave a Comment »
Posted by jpluimers on 2015/12/22
Hopefully someone will move this to Github before Google code goes down: paping – Cross-platform TCP port testing, emulating the functionality of ping (port ping) – Google Project Hosting.
Paping (pronounced pah ping) is a computer network administration utility used to test the reachability of a host on an Internet Protocol (TCP/IP) network and to measure the time it takes to connect to a specified port
–jeroen
via:
Posted in *nix, *nix-tools, Communications Development, Console (command prompt window), Development, Internet protocol suite, Power User, TCP, Windows | 1 Comment »
Posted by jpluimers on 2015/11/27
It feels like yesterday, but haxpo2015ams was already six months ago!
Session materials index:
–jeroen
Posted in *nix, *nix-tools, Encryption, Hashing, https, LifeHacker, OpenSSL, PKI, Power User, Public Key Cryptography, Security, Signing | Leave a Comment »
Posted by jpluimers on 2015/11/24
Applying security hardening standards and generally securing Ubuntu has been a challenge.
Tell me about it (:
–jeroen
Source: What I learned while securing Ubuntu – major.io
Posted in *nix, *nix-tools, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2015/11/20
StartSSL does in fact offer free SSL certs for subdomains, though they are Class 1 certificates.
It works: just start the process for the domain, then when you get to the step for entering a subdomain, enter any one (of course www works, but you can do the process multiple times so register certificates for multiple subdomains).
–jeroen
via: tls – Free second-level domain SSL certificate – Information Security Stack Exchange
Posted in *nix, *nix-tools, Apache2, https, Power User, Security | Leave a Comment »
Posted by jpluimers on 2015/10/31
Question: Can you explain how to use OR, AND and NOT operators in Unix grep command with some examples?
Source: 7 Linux Grep OR, Grep AND, Grep NOT Operator Examples
Posted in *nix, *nix-tools, Power User, RegEx | Leave a Comment »
Posted by jpluimers on 2015/06/17
Inspired by CloudFlare Keyless SSL, I have this idea of using Diffie Hellman over WebSockets over a MittM based http proxy (which intercepts and decrypts HTTPS traffic) like mitmproxy (but them from a commercial vendor to inspect web traffic) to setup an encapsulated secure channel.
I know SSH uses Diffie Hellman to setup a secure channel over a binary TCP connection.
Binary communication over HTTP usually means WebSocket.
I don’t want WebSSH (which does use WebSockets, but is probably filtered by the MitM proxy anyway).
Maybe either of these open source tools will work:
If these don’t work, I need to do more research.
Since I use C# and .NET for much of my work, I started the WebSocket over HTTP C# query.
c# – How to use proxies with the WebSocket4Net library – Stack Overflow.
–jeroen
Posted in *nix, *nix-tools, Communications Development, Development, HTTP, Internet protocol suite, Linux, Power User, SSH, SuSE Linux, TCP, WebSockets, Windows, Windows-Http-Proxy | Leave a Comment »
Posted by jpluimers on 2015/06/10
After reading Converting Hg repositories to Git directed me into reading Bitbucket: Converting Hg repositories to Git I hoped moving my Mercurial repository on BitBucket to a Git repository would be something like following the steps.
It wasn’t.
First of all, hg-git on a Windows system requires Python or TortoiseHg. Neither of these I wanted to install for a one-off conversion.
So I took a throw-away Linux VM, and did the steps below. But let me first explain why.
My motivation for moving away from BitBucket to GitHub, especially for projects containing markdown documentation.
When writing documentation in Markdown, being able to in-line reference pictures or have relative-references to other documents. This works perfectly in local Markdown tools (like MarkdownPad 2 or LightPaper).
Posted in *nix, *nix-tools, BitBucket, Development, DVCS - Distributed Version Control, git, GitHub, Linux, Mercurial/Hg, openSuSE, Power User, Source Code Management, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2015/05/25
Interesting: HCL:Raspberry Pi – openSUSE.
Posted in *nix, *nix-tools, Hardware Development, Linux, openSuSE, Power User, Raspberry Pi, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2015/05/19
Now that DynamicDNS moved itself to a fully payed service, named it DynDns Pro, then renamed it Remote Access and limiting it to 30 hosts for USD 25 a year, I looked for alternatives, and noticed NO-IP.
I like it for a few reasons:
OK, last year, there was this Microsoft Legal Action and Controversy, but I think that is a once time thing (some people even argue that Microsoft wasn’t thinking), so I created the last script below in PowerShell.
A few open-source scripts to keep your NO-IP account happy (that also work on most other DDNS providers like Duck DNS):
Posted in *nix, *nix-tools, bash, CommandLine, Development, Perl, PHP, Power User, PowerShell, Scripting, Software Development | 1 Comment »
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