After a bit of head-scratching and frustration, I found an issue on a Cisco ASA (v9.1) with the configuration that has caught me out twice previously. I felt like a bit of an idiot for not clicking sooner.
Basically the policy was allowing “icmp any any” both sides along with … Continue reading
Unfortunately the juniper port numbering scheme can cause a lot of confusion for people not familiar with the layout. This can get quite confusing when explaining to remote hands on site.
I made a quick reference which I use for some of our MX480s but the principle is the same … Continue reading
I was getting the following alerts regarding the custom poller on NNMi which was annoying users with the constant on/off status alerts.
“The Performance SPI Custom Poller Bus Adapter has status Critical because the average input queue duration…..”
“The CustomPoller Export Bus Adapter has status Minor because file space … Continue reading
Just a small note on how the CLI on an MX behaves when you try to add vlans to an existing trunk as sometimes people are confused about doing this. Obviously it’s not really a problem as nothing happens until commit, but this works in a similar fashion to Cisco … Continue reading
I found that my VPN had stopped working on one of my linode hosted VPSs (CentOS release 6.5). I was struggling to suss this out but the logs suggested some sort of issue with network connectivity making TLS negotiation fail (“LS Error: TLS key negotiation failed to occur within 60 … Continue reading