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- Examining certificates over explicit proxy with openssl
- 3d printing a part for my deck
- Quick Tip: Powershell command to unblock a firewall port when running Windows Defender
- What’s Next In 3D Printing?
- Network utilities for Windows
- Monitoring by Zabbix: a working document
- Consumer tech: Samsung touchscreen not responsive
- Getting GNU screen to work on Windows 10 for a productive terminal multiplex environment
- Azure Cloud: can you swap public IP addresses on two VMs?
- The IT Detective Agency: the case of the Is it the firewall? or routing? or switch? or layer 2?
- The IT Detective Agency: WebEx and the case of the mysterious reset
- What I’m Working on Now: building my own 3D printer
- The IT Detective Agency: the case of Failed to convert character
- How to POST with curl
- No Internet, secure WiFi status message in Windows 10
- Raspberry Pi Recovery Mode or interrupting the boot process
- apache as reverse proxy under SLES
- Solution to NPR puzzle using Raspberry Pi
- Raspberry Pi photo frame using your pictures on your Google Drive
- F5 Big-IP: When your virtual server does not present your chain certificate
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Category Archives: Admin
Examining certificates over explicit proxy with openssl
Intro This is pretty esoteric, but I’ve personally been waiting for this for a long time. It seems that beginning with openssl 1.1, the s_client sub-menu has had support for a proxy setting. Until then it was basically impossible to … Continue reading
Posted in Admin, Network Technologies, Web Site Technologies
Tagged http proxy, openssl
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Quick Tip: Powershell command to unblock a firewall port when running Windows Defender
Setup I decided to run an X Server on my Windows 10 laptop. I only need it for Cognos gateway configuration, but when you need it, you need it. Of course an X Server listens on port 6000, so hosts … Continue reading
Monitoring by Zabbix: a working document
Intro I panned Zabbix in this post: DIY monitoring. But I have compelling reasons to revisit it. I have to say it has matured, but there remain some very frustrating things about it, especially when compared with SiteScope (now owned … Continue reading
Posted in Admin, Network Technologies
Tagged F5 BigIP, Microfocus SiteScope, RegEx, zabbix
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Getting GNU screen to work on Windows 10 for a productive terminal multiplex environment
Intro My jump server is getting old and they’re threatening to cut it off. A jump server is a server from which you launch CLI terminal sessions into your linux servers. Since my laptop has firewall access to all the … Continue reading
Posted in Admin, Linux
Tagged Cygwin, GNU Screen, PING, snmpwalk, teraterm, WSL windows subsystem for Linux
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Azure Cloud: can you swap public IP addresses on two VMs?
Intro I am just beginning to use Microsoft’s Azure cloud environment. Although I am inclined to be a fan of AWS, I haven’t looked at AWS networking for awhile, and the last time I did something I felt totally lost … Continue reading
The IT Detective Agency: the case of the Is it the firewall? or routing? or switch? or layer 2?
Intro This is yet another tale of things in the IT world often do not turn out the way it seems at first blush. Or possibly a tale of just when you think you’ve seen it all after decades in … Continue reading
The IT Detective Agency: WebEx and the case of the mysterious reset
Intro A company known to me was a contented user of WebEx until they noticed a strange behaviour: their calls were losing quality or even dropped exactly after one hour. No one, most especially the vendor of WebEx, had the … Continue reading
What I’m Working on Now: building my own 3D printer
Intro Because someone else on the team had a good experience with it, and so i can exchange notes and get some tips form them, I went ahead and ordered the Anet A8 3D printer + an extra roll of … Continue reading
No Internet, secure WiFi status message in Windows 10
Intro Finding out how Windows decides if there is an Internet connection or not can be a challenge often posed by trying to do an Internet search comprised or words that are common and therefore used in many other contexts. … Continue reading
Raspberry Pi Recovery Mode or interrupting the boot process
Intro If you installed Raspbian from the NOOBS distribution as I do, then you may occasionally “blow up” your installation as I just have! You have an out, sort of, short of re-imaging the disk, though about with the same … Continue reading
Posted in Admin, Linux, Raspberry Pi
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