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Tag: Network

Home Lab v3.1: Ubiquiti Networks UniFi AP AC PRO

My home Internet access is critical not only to me, but to my whole family. Over the course of many years, I have gone through a variety of Internet configurations. Recently, I moved to the UniFi AP AC PRO from the ASUS RT-AC3200 for WiFi. I would like to discuss my requirements as I looked for a new WiFi solution and my thoughts so far. Read on to learn more!

Cannot Access the WiFi Internet on Mac with: Cannot Allocate Memory

I have been noticing more and more frequently then when I switch between WiFi connections or switch between wired and WiFi connections that sometimes my WiFi connection would show that it was online, but I was unable to access anything on the LAN or WAN. I have experienced similar issues when DNS is not working properly, so my first test is to validate DNS is working. With this recent issue my test always returned:

$ > nslookup
/SourceCache/bind9/bind9-45.101/bind9/lib/isc/unix/socket.c:1890: internal_send: Cannot allocate memory

So what is going on and how can you fix the issue?

Juniper Network Connect on Mac

Recently my laptop decided it no longer wanted to start. While it was in the Genius Bar, I dug up an old Macbook Pro (called MBP throughout the rest of this post) and began to configure it so I could use it for work. Configuring a different laptop gave me the opportunity to try out some new/updated applications and see if I could find more ways to be productive (I will cover this in a future post). In addition, it brought up some old issues I had experienced and gave me a chance to fix them and document them. In this post, I would like to talk about the problems I experienced attempting to connect to a Juniper Network Connect (called JNC throughout the rest of this post) VPN and how I was able to get it resolved.

Using Load Balancers in Transparent Mode – A Workaround

In my last post, I talked about two routing modes used on load balancers: NAT and transparent. As you may recall, I recommended against using transparent mode unless it is a common practice to use a load balancer as the default gateway in your environment. In this blog post, I would like to provide another workaround that would enable transparent mode without having to point the default gateway of your Log Insight nodes to the load balancer!

Log Insight Cluster: Data Not Balanced Across Nodes

In Log Insight 2.0 a scale-out feature was introduced. The best practice when using scale-out is to configure an external load balancer in front of the cluster and send all ingestion traffic (i.e. syslog and ingestion API) to the load balancer instead of directly to a node. The reason for this best practice is to assist with balancing data across nodes and also to provide ingestion high availability. In this post, I would like to discuss why data may not be balanced across a Log Insight cluster whether a load balancer is used or not.