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Relaxing the DNS CNAME rules (a little)
In the University we have a web tool which allows IT Staff to update parts of the DNS covering their own unit. It’s a simple tool which we hope one day to replace, but serves well enough for most cases … Continue reading
Posted in DNS, Productivity
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Visitor Network Account Management (enhancements update)
Note: this post relates to a private service for University of Oxford IT Support Staff. Some time back I published a list of proposed updates to the Visitor Network account management web tool, and asked for feedback. Based on that … Continue reading
OWL and Eduroam
There seems to be a little confusion out there about how OWL relates to Eduroam so this is a overview to help clarify the situation. We have deployed Eduroam using WPA enterprise. Briefly from the users perspective this means that … Continue reading
Update to our IPv6 Allocation Scheme
After gaining some experience in configuring IPv6 networks, and also receiving feedback from others, I’ve revised our IPv6 Allocation Scheme. This is the document which lays out how we intend to allocate networks to departments and colleges, and other services … Continue reading
Posted in Backbone Network, Documentation, IPv6
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Changes in the core
On Tuesday 2nd March we made two significant changes in the Core. Both are inline with current Cisco best practice are have been implemented as part of our Backbone ‘feature update’ project. VTP We have moved to using VLAN Trunking … Continue reading
Posted in Backbone Network, Best Practices, Cisco Networks, Services
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Visitor Network account lifetime
Several comments on my recent post about updates to the Visitor Network Account Management tool requested an increase of the maximum account lifetime. Whilst this is more of a policy change than a feature update to the tool, and hence … Continue reading
Posted in Documentation, Services, Wireless
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Updates to the Visitor Network Account Management Tool
Note: this post relates to a private service for University of Oxford IT Support Staff. It’s been some time since the Visitor Network account management tool, which you use to create network access accounts for visitors to the University, has … Continue reading
Posted in General Maintenance, Services, Wireless
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Logging from iptables
We recently had a problem to troubleshoot on the wireless network, which was quickly resolved through simply having effective logging from iptables. In case you didn’t know, iptables has a LOG target which can direct messages to the local syslog … Continue reading
Posted in Best Practices, Firewall, Wireless
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Wireless – what could possibly go wrong?!
I love this slide from a Troubleshooting Wireless Networks talk I attended last week. It says a lot about how difficult it is to tackle trouble tickets of the “client can’t connect to network” variety.
Posted in Cisco Networks, Wireless
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