Adding VLANs to OpenWRT 18.06.1 on a TP-Link TL-WR810N

Welcome back to Project Overkill. This instalment covers, as suggested by the title, configuring OpenWRT 18.06.1 to support 802.1q VLANs on a TP-Link TL-WR810N. There are two pre-requisites: the network chipset in the router must support VLANs (some don't), and OpenWRT's configuration files must contain some instructions defining the switch and associated VLANs. The TL-WR810N … Continue reading Adding VLANs to OpenWRT 18.06.1 on a TP-Link TL-WR810N

Dual-WAN failover with the Ubiquiti EdgeRouter Lite, using PPPoE and 4G

One WAN connection isn't enough for Project Overkill. Everyone's home Internet connection needs full redundancy, right? Well, mine certainly does. For years now I've made do with a paltry single router connected to a DSL line provided by British Telecom (even if it's billed through someone else to disguise its origins). But I recently got … Continue reading Dual-WAN failover with the Ubiquiti EdgeRouter Lite, using PPPoE and 4G

2048 bits off more than iLO 4 can chew

Any good administrator knows that public key authentication for SSH is better than using passwords, and longer keys are better than shorter keys. Well, someone might want to let Hewlett Packard know. The latest version of HP's Integrated Lights-Out 4 (version 2.55) will happily accept a 4096-bit public key for SSH authentication. There won't be … Continue reading 2048 bits off more than iLO 4 can chew

Using OpenWRT / LEDE for Out-of-Band Management

My day job is IT security for large, blue-chip organisations. I usually work on diverse, heterogeneous networks and have to remember which commands, menus, and options are applicable to whichever piece of equipment I might be using at the time. There ain't no such thing as a single standard, so it's important that I retain … Continue reading Using OpenWRT / LEDE for Out-of-Band Management

Cisco 7960G BTXML Error – HTTP 200 or 404?

Today I learned that the directory XML file used by the Cisco 7960G IP phone doesn't work from all web servers. It seems that the 7960G is fussy about which HTTP response codes it accepts, and that an HTTP 200 response might not be the correct HTTP 200 response. Hosting the directory XML file on … Continue reading Cisco 7960G BTXML Error – HTTP 200 or 404?