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Phil's Blog

The thoughts and ramblings of an Engineer

About Me

I’m an Engineer, working for Vonage (an Ericsson company). I write about stuff that interests me - primarily Networks, Software Engineering, VoIP and Electronics. It exists in the hope that someone may learn from my thoughts and ramblings. I'm on GitHub! I'm also currently fairly active on Twitter and LinkedIn.

28 December, 2017 Blog

Hetzner: Routing IPv6 through a firewall such as pfSense

Hetzner offer very well specified physical servers at extremely low prices. I’ve used them for many years and they’ve proved

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Postfix Logo
26 December, 2017 Blog

Postfix: Blocking senders by reverse DNS hostname

Postfix has an option for smtpd_recipient_restrictions called check_client_access. According to the Postfix manual, this: You can use it to block specific domains, as

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Outlook Logo
19 August, 2017 Blog

Fixed: Outlook 2016 not synchronizing Inbox from IMAP after upgrade from 2013

After upgrading from Outlook 2013 to 2016, I found that new e-mails were not being downloaded from IMAP into the

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6 August, 2017 Blog

Fixed: Plex with Sonos – Unable to play – Unable to connect to Plex

This problem bugged me for a long time. I could list the contents of the Plex library in the Sonos

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Juniper SRX 345
6 April, 2017 Blog

Juniper SRX – Upgrading JunOS from USB

There’s a few ways to do this. Here’s the easiest: First, format your USB drive as fat32. Download the compressed

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Juniper SRX 345
5 April, 2017 Blog

Juniper SRX PPPoE Configuration for Plusnet ADSL

This was a bit of a faff, so I thought I’d document it. The setup here is an ADSL modem

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Juniper SRX 345
24 November, 2016 Blog

An overview of JunOS Quality of Service (QoS / CoS) configuration

JunOS QoS configuration is flexible, albeit a little tricky to understand. It has a few key components which I shall

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Juniper MX 80
25 October, 2016 Blog

VLAN manipulation/translation on Juniper MX series routers

The MX series routers are truly excellent. As well as being used for routing, they can also be used for

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Juniper SRX 345
20 September, 2016 Blog

Chassis clustering a Juniper SRX firewall via a switch

Intro It is recommended that clustered SRX devices are directly connected. To do this, you need to run 2 cables,

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30 August, 2016 Blog

[SOLVED] pfSense – pfsync_undefer_state: unable to find deferred state

This pfSense bug has been present since 2.2 and is still present at the time of writing this. It occurs

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