Remote Access SSH, Mosh, ZSH, TMUX

Posted on Tue 02 January 2024 in Security • Tagged with Linux, FreeBSD, Admin, ssh, tmux, zsh

Having secure remote access that's still convenient is key when you're travelling. My setup is very old, but still works perfectly. The remote access I need is mostly terminal access, as I have a lot of tools on terminal to access my important data remotely.


I use …

Continue reading

SMTP Smuggling

Posted on Sat 23 December 2023 in Security • Tagged with Postfix, Mail, Security, IT-Security

On 2023-12-18, the SEC Consult team published a security issue affecting many SMTP implementations. The problem results in some attack vectors bypassing important antispam/antispoofing mechanisms. This can cause major problems as mails can be injected into the mail flow that appear to come from a valid trusted source.

It …

Continue reading

Very nice blog

Posted on Wed 30 May 2012 in Security • Tagged with Apache, http, SSH

Some time ago I wrote two articles about tunneling HTTP traffic through a SSH session or OpenVPN. This is useful if you need to secure your webtraffic in an untrusted network.

Today I found this blog:

You should review it, there are some nice articles. I …

Continue reading

Torproject needs your help

Posted on Fri 18 May 2012 in Security • Tagged with Tor, torproject, torservers

In this email to the public world the tor projects is asking for help in testing and improving the QA process of the Tor-Bundle.

As you maybe know I am a supporter of the tor project and spend some time in the past of writing some howtos to help improving …

Continue reading

Converting certificates

Posted on Sun 18 December 2011 in Security • Tagged with Apache, Nginx, SSH, ssl

If you are running a webserver with https you maybe get a certificate for your site some times in a different format as you expect it.

The easiest way of converting the certificates is using the openssl tool.

For example if you get a certificate in .pfx format you can …

Continue reading

pfSense a FreeBSD based firewall

Posted on Thu 21 April 2011 in Security • Tagged with Firewall, pfSense

pfSense-LogoSome time ago I came over pfSense in a project and did some review of it. pfSense is a FreeBSD based firewall with many features and an easy to use web based interface. It works nicely in virtual environments like VMware and it's installation is quite easy.

Within a few …

Continue reading

Use SSH for more secure browsing in public networks

Posted on Wed 20 April 2011 in Security • Tagged with Firefox, privacy, security, SSH

In the time of free wifi and free internet connections in every hotel, bar or cafe you should be sure your connections are secure. In some cases you can't trust the connection but you need to go online and read some mails or share some documents. In this case some …

Continue reading