Securing your Email Reputation with SPF

SPF (Server Policy Framework) is a simple means to limit the ability of  others to forge your identity in email.  I first implemented it after a forged identity under my domain was used to send Spam.  Once SPF was configured,  the bounce messages quickly dropped off. Although not as frequently implemented as sender address checks, […]

Setting up Squid Proxy on Ubuntu

Squid is a proxy service for HTTP and other requests.  This article covers installing it and configuring it to run on Ubuntu as a transparent proxy.  This documentation includes configuring Web Proxy Auto-Discovery (WPAD) via DHCP and DNS. I run a heterogeneous configuration.  This provided a number of challenges as various implementations of WPAD were […]

OpenWRT and Ubuntu dnmasq setup

Now I have replaced my old firewall with OpenWRT, I needed to enhance the configuration of dnsmasq to support the network.  The old Ubunutu based firewall was already running dnsmasq, as does the DNS server on the LAN. I run a mixed network with wired and wireless clients on separate address ranges. DHCP services are […]