Internet search engines are censoring this data so I will probably have to embed it in a photo, but here is how you enable use of third party transceivers such as SFP/SFP+ fiber optics on e.g., Juniper's JunOS and Cisco IOS.

Juniper:

Photo

Cisco:

Photo

HP/Aruba:

Photo

Dell:

Photo

This is something seasoned network engineers know about, but there's no reason why this should be kept secret.

I will add more when I learn of them.


iPhone 11 Pro Has Broken Exif Orientation Data

Fri 11 October 2019 by feld

I have the new iPhone 11 Pro. It's a great camera. Turns out all of the photos I've taken so far have had incorrect EXIF Orientation data. This really sucks. I've confirmed the same issue happens on my wife's phone.

It's shocking that this has not been noticed by Apple …

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Percona Toolkit Information Disclosure Vulnerability

Thu 09 August 2018 by feld

Percona includes an information disclosure vulnerability in the form of a "version check" feature in many of their products. Every time you run a database backup with xtrabackup or use any of the Percona Toolkit scripts the following information is collected and posted to https://v.percona.com:

  • OS Platform …
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vBulletin cannot login without "Remember Me"

Wed 25 July 2018 by feld

If you happen to run a vBulletin forum and hit an issue where you cannot login to the site without first selecting the "Remember Me" checkbox, would you happen to be on CloudFlare or be using a reverse proxy? Make sure for CloudFlare you have the list of their upstream …

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Git Is Not Revision Control

Sun 21 January 2018 by feld

Git has always rubbed me the wrong way. The ability to rewrite history and not tracking file renames are a few of the reasons it has turned me sour, not to mention the awful inconsistent UX as brilliantly mocked in Git Koans. I'm not objective enough to come up with …

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FreeBSD Remote Serial Console Access With Dell and Cisco Servers

Mon 01 May 2017 by feld

I have become allergic to Java. It seems every time I need to access a server console my system is throwing fits about Java security. I've spent hours trying to fix a Java issue which was preventing me from fixing a server I needed console access to. I will show …

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Using FreeBSD as a Time Capsule for OSX

Mon 19 December 2016 by feld

I've had both a coworker and a FreeBSD developer ask me recently how to use FreeBSD as a Time Capsule for Time Machine from OSX. There are a lot of tutorials out there and most of them are non-functional. This is possibly the simplest guide that is known to be …

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Generating DDNS TSIG Keys for BIND

Thu 15 December 2016 by feld

The tutorials on how to generate TSIG keys for BIND DDNS updates suck. It would also be tedious if tasked to generate several. I'm not sure why ISC has not produced a standalone script or utility to make this easier as nobody should have to piece it together by hand …

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Speeding up MySQL Import on FreeBSD

Wed 28 September 2016 by feld

I was recently tasked with rebuilding a readonly slave database server which only slaves a couple of the available databases. The backup/dump is straightforward and fast, but the restore was being excruciatingly slow. I didn't want to wait a week for this thing to finish, so I had to …

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Monitoring FreeBSD Base System Vulnerabilities with pkg audit

Fri 12 August 2016 by feld

The FreeBSD base system has been difficult to monitor for published vulnerabilities for a long time. This will improve when we achieve a packaged base system, but that leaves users of currently supported -RELEASE systems without a standardized option.

The freebsd-version(1) utility has existed since FreeBSD 10.0. This …

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