Search Results for “tls” – CONTINUAL INTEGRATION

How Do You Troubleshoot “TLS Error: TLS key negotiation failed to occur TLS handshake failed”?

09/17/202209/14/2022 0 Comments

Problem scenario
You have a Linux server with the openvpn binary command installed. You try to start the OpenVPN client service. You see this message: “TLS Error: TLS key negotiation failed to occur TLS handshake failed.”

What should you do?

Solution
Reinstall and reconfigure the OpenVPN server. Just completely start over.
You may want to try this: https://www.cyberciti.biz/faq/howto-setup-openvpn-server-on-ubuntu-linux-14-04-or-16-04-lts/

…

Continue reading “How Do You Troubleshoot “TLS Error: TLS key negotiation failed to occur TLS handshake failed”?”

How Do You Use TLS with Nginx?

12/14/201710/15/2020 0 Comments

Problem scenario
You know how to use TLS with Node.js because of this article. You want to use TLS with Nginx to test it out with a regular web browsing session. You want to implement TLS without Node.js. How do you set up TLS (without paying a certificate authority and without Node.js)?

Solution
This assumes that port 443 is not blocked from the workstation to the Nginx server.

…

Continue reading “How Do You Use TLS with Nginx?”

Cybersecurity 101: What Every Business Owner Needs to Know

02/02/202502/02/2025 0 Comments

Image via Pexels

In today’s digital-driven world, cybersecurity is no longer an optional consideration for businesses – it’s a necessity. From protecting customer data to safeguarding sensitive business information, entrepreneurs and established business owners face increasing risks from cyberattacks. Without proper measures, a single breach can lead to devastating financial losses and reputational damage. By understanding the basics of cybersecurity and implementing strategic defenses, business leaders can build resilience against cyber threats and protect their ventures in a constantly evolving landscape.

…

Continue reading “Cybersecurity 101: What Every Business Owner Needs to Know”

How Do You Troubleshoot the OpenVPN Issue “insufficient key material or header text not found in file”?

10/04/202210/05/2022 0 Comments

Problem scenario
You get an error message when you run openvpn. You are trying to start the client service. You get “insufficient key material or header text not found in file”. What should you do?

Possible Solution #1
Backup your client.conf file.

Find your tls-crypt.key file. If you have none, run this:

openvpn –genkey –secret /etc/openvpn/tls-crypt.key

Copy every line in the tls-crypt.key file and paste it into a particular location of the client.conf file.

…

Continue reading “How Do You Troubleshoot the OpenVPN Issue “insufficient key material or header text not found in file”?”

With Nginx Can a .pem file replace a .crt and/or a .key File?

05/27/202205/30/2022 0 Comments

Problem scenario
You know .crt and .key files can pair as ssl_certificates and SSL certificate keys respectively. In Nginx, can .pem files replace .crt files? Can .pem files potentially replace .key files? Can a .pem file be a substitute?

Solution
Yes to some extent, for the nginx.conf file, a .pem file can replace a .crt file and potentially a .key file too.

…

Continue reading “With Nginx Can a .pem file replace a .crt and/or a .key File?”

How Do You Rotate Certificates?

01/02/202201/22/2022 0 Comments

Problem scenario
You have load balancers, web servers, and other HTTP technologies that rely on SSL or TLS certificates. Some certificates will be revoked for security reasons. How do you provision new certificates to update them (because they will expire or you want to harden your environment by refreshing the certs as aged certs are more likely to be compromised than young ones)?

Solution
You may want to plan for having lower capacity than normal and therefore schedule the time to do this in production during an off-peak time.

…

Continue reading “How Do You Rotate Certificates?”

How Do You Troubleshoot the Cargo Problem “error[E0658]: use of unstable library feature ‘str_strip’: newly added”?

01/13/202103/06/2024 0 Comments

Problem scenario
You run a cargo command. You get this error:

error[E0658]: use of unstable library feature ‘str_strip’: newly added
–> /home/jdoe/.cargo/registry/src/github.com-1ecc6299db9ec823/ethbloom-0.10.0/src/lib.rs:69:1
|
69 | / construct_fixed_hash! {
70 | | /// Bloom hash type with 256 bytes (2048 bits) size.
71 | | pub struct Bloom(BLOOM_SIZE);
72 | | }
| |_^
|
= note: see issue #67302 https://github.com/rust-lang/rust/issues/67302 for more information
= note: this error originates in a macro (in Nightly builds,

…

Continue reading “How Do You Troubleshoot the Cargo Problem “error[E0658]: use of unstable library feature ‘str_strip’: newly added”?”