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Security

11 Jul 2021 8 minutes read
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  • projects yubikey security ssh

Project: Setup Ed25519 Key With YubiKey 5 Nano

YubiKey 5 Nano I’ve been using USB security keys for SSH keys since 2015. I have switched from a generic brand to …

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08 May 2021 2 minutes read
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  • yubikey security ssh

YubiKey Not Working With GnuPG 2.3

YubiKey 5 Nano - the One I Use I’m a long time fan of USB security keys for SSH access and signig GitHub commits, …

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10 Mar 2020 2 minutes read
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  • security fail2ban ssh

Ban Specific IP Manually With Fail2ban

Now that I’m monitoring my logs using cetralised RSyslog, I regularly notice SSH attacks right when and as they …

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29 Feb 2020 1 minutes read
FB4 Log Fail2ban Messages to Syslog
  • Advanced topics Security Troubleshooting

Log Fail2ban Messages to Syslog

**fail2ban logging into syslog** With quite a few servers accepting SSH connections and protecting themselves using …

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04 Feb 2020 1 minutes read
FB4 Failed Login Attempts for Root User
  • Security

Failed Login Attempts for Root User

Failed login attempts Wow, things are much worse than I expected! I’m reinstalling one of the dedicated hosts for …

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10 Jan 2020 4 minutes read
FB4 How To: Use Fail2ban to Protect SSH
  • How-To Security

How To: Use Fail2ban to Protect SSH

**fail2ban software**

I have a number of servers, including a few on the home office network, that accept SSH …

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13 Sep 2019 2 minutes read
FB4 Confirm Firewall Configuration in RHEL 8
  • Advanced topics Networking Red Hat Security

Confirm Firewall Configuration in RHEL 8

**List Firewall Rules in RHEL 8** I’m fascinated by the improvements and new features in RHEL 8, plus it’s a …

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25 Aug 2019 2 minutes read
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  • News Security

Installing Kali Linux 2019.2

It appears that Kali Linux is supported on the latest Raspberry Pi model, RPi 4. So I thought I’d get familiar …

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19 Aug 2019 3 minutes read
FB4 Deploy Your SSH Key to Remote Server
  • Advanced topics Security

Deploy Your SSH Key to Remote Server

Adding SSH key to remote server

One of the greatest improvements introduced by the SSH protocol is key-based …

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20 Jun 2019 1 minutes read
FB4 Cloudflare: Crypto Week 2019
  • News Security

Cloudflare: Crypto Week 2019

Cloudflare, possibly the best DNS provider (and so much more) available for free, is hosting CryptoWeek 2019 since …

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