Blog Posts | Cafayate.Net

Latest

NAXSI: protecting websites with Nginx

NAXSI is Nginx Anti XSS & SQL injection. In simple words, it’s a firewall for web applications (WAF) for Nginx, protecting from XSS, SQL injections, ...

Nginx Ubuntu

Mar 5, 2021

0 2746

Tech Blog

LXC Networking Guide

Containers need to have an IP so they are available on the network. In Linux ‘bridges’ are used to connect VMs to a network. Think of a bridge as so...

LXC Nginx Ubuntu

Mar 5, 2021

0 2913

Tech Blog

How do I setup DHCP-Server interfaces so they are mapped/bridged to each other?

Edit /etc/network/interfaces to have a section like this: iface br0 inet static bridge_ports eth0 eth1 address 192.168.0.1 netmask 255.255.255.0 (Th...

Ubuntu

Mar 5, 2021

0 1925

Tech Blog

Proxy Heroku

Applications on Heroku can use https, and it is free as it is under *.herokuapp.com certificate. However if you want to use your own custom domain, ...

Nginx

Mar 5, 2021

0 2137

Tech Blog

Virtualmin, Apache, and Nginx Reverse Proxy

I wanted to be able to setup a reverse proxy with nginx and apache but continue using Virtualmin GPL to manage my domains. The only reason I wanted a...

Nginx Ubuntu Virtualmin

Mar 5, 2021

0 3034

Tech Blog

HOWTO: Protect against postfix AUTH DoS attacks

I have tons of /Oct 19 06:30:50 mail postfix/smtpd[14043]: connect from unknown[151.237.190.118] Oct 19 06:30:50 mail postfix/smtpd[14043]: lost co...

Mar 5, 2021

0 2259

Tech Blog

Hardening guide for Postfix 2.x

Make sure the Postfix is running with non-root account: ps aux | grep postfix | grep -v '^root' Change permissions and ownership on the destinations...

Mar 5, 2021

0 2226

Tech Blog

Lightweight, secure, database-free, spamfiltering mail server with Postfix, Dovecot, openDKIM and dspam on Debian 7

## Update 2016-03-08 I wasn’t aware Dovecot is case-sensitive by default and this led to strange situations. Many thanks to the entry Roundcube, Dov...

Mar 5, 2021

0 2036

Tech Blog

handy commands

continuous live logging tail -f /var/log/mail.log show line number nano nano -c filename Ubuntu 14.04 System Logging sudo chown syslog:adm /var/log...

Ubuntu

Mar 5, 2021

0 2121

Tech Blog

How To Configure Custom Postfix Bounce Messages

Since Postfix version 2.3, Postfix supports custom bounce messages. This guide shows how to configure custom Postfix bounce messages. I do not issue...

Mar 5, 2021

0 2336

Tech Blog

Troubleshooting Problems with Postfix, Dovecot, and MySQL

This guide is a companion to the Postfix, Dovecot, and MySQL [1] installation guide. Because setting up a mail server is tricky, we’ve created this c...

Mar 5, 2021

0 2305

Tech Blog

Diagnosing Network Issues with MTR

MTR is a powerful network diagnostic tool that enables administrators to diagnose and isolate networking errors and provide helpful reports of netwo...

Mar 5, 2021

0 2149

Tech Blog

About us

Economical and Technical.

About us

Follow Us

Archives

Tags

Follow us