To manage north-south and east-west traffic in a cloud environment, it can be useful to
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Welcome to my personal tech blog covering a range of topics from (Oracle) Cloud, database, networking and routing, IPv6, building a family-friendly home network and adventures in ham radio. Dive into insights, tips, real-world stories on technology that keeps us connected and empowers both professional and personal projects.
- Install OPNsense® @Oracle OCITo manage north-south and east-west traffic in a cloud environment, it can be useful to implement a software-based firewall. In lab, training environments, or for personal use, professional firewalls are often too costly. Why
- Install OpenWrt on TP-Link EAP245 v1
How-to install OpenWrt on TP-Link EAP245 v1 - Setup a WireGuard VPN using IPv6 and OSPF – Oracle Cloud Free Tier- part IV
This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part IV is focused on routing and OSPF. - Setup a WireGuard VPN using IPv6 and OSPF – Oracle Cloud Free Tier- part III
This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part III is focused on the WireGuard setup and configuration of the home router. In my case it’s an EdgeRouter™-X with version 2.0.9. - Setup a WireGuard VPN using IPv6 and OSPF – Oracle Cloud Free Tier- part II
This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier. Part II is focused on WireGuard setup and configuration in the cloud. - How to remove the Google DNS server entry from my Kindle?
How to remove the Google DNS server from my Kindle? Configuring my Kindle network configuration, I observed something spooky. Despite using DHCP and my own network services, there appeared the Google DNS server address 8.8.8.8 in the network configuration, always. - Oracle 19.12 EMON large consumption of PGA memory
SQL-02100 Application team is approaching and reporting: “We do receive the following error on production!”: This is a clear indicating for running out of PGA memory. Well, this is suspicious! This is a lightweight - Setup a WireGuard VPN using IPv6 and OSPF – Oracle Cloud Free Tier- part I
This post will describe the way to setup a WireGuard site-to-site VPN using IPv6 and OSPF in the Oracle Cloud Free Tier - It’s not me, it’s you! … Me? No! It’s you! – black hole/null routing
There is a very common routing issue, that might exist, when you are setting up your home network with the help of RFC1918 based IPv4 addresses. How to make sure that unassigned private IP - Delete IPv6 route on EdgeRouter™-X
What to do, when you messed up your router routing configuration? Configuring your router, things might go wrong. Probably this is interesting fore everyone dealing with routing configurations using an EdgeRouter™. How to delete - Disconnect Oracle database sessions with srvctl & DBMS_SERVICE
Disconnect long lasting (application) client-based Oracle database sessions with srvctl & DBMS_SERVICE.