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A quick copy/paste to enable a 4GB swap file on Centos 6/7:

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo "/swapfile swap swap sw 0 0" >> /etc/fstab

On the Asterisk server, ensure xinetd is installed

yum -y install xinetd service xinetd start

Create an Observium agent for xinetd

nano /etc/xinetd.d/observium\_agent

Add this to the file

service app-asterisk
port = 36602
socket_type = stream
protocol = tcp
wait = no

We've recently been testing sites with the Qualys SSL Server Test here:

By default, the SSL settings on Vesta are good - but it's not possible to get an A+ rating without making some changes to the nginx configuration files.

Although SSL Labs do give a...

Over the otherwise quiet Christmas period, we completed an office move for a design company, from their offices in Brixton to new offices in Clapham.

Office moves are a great oppurtunity to make changes to the way a network is setup - almost starting from a blank slate at the new offices.

The ne...

We recently completed a network upgrade and tidy for a training company in South London.

The problem points:

  1. Poor performance of the internet router - often crashed
  2. Poor wireless signal
  3. No VPN access, or unstable VPN access
  4. Messy network cabinet, making diagnosis of faults difficult.