William Lieurance's Tech Blog

Strongswan client to a Cisco VPN fails after upgrading to Fedora 41

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Fedora 41 removes SHA1 signatures, but Cisco VPNs really want those.…

Running Cisco ASDM 7.18 or 7.19 on Linux

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Can't use Java Web Start anymore, so let's extract it from the DMG…

Installing Mastodon 4 on Rocky Linux 9

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The from-source instructions assume Debian, but I'm a Redhat kid.…

Download a file in a openjdk Dockerfile without wget or curl

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Java has enough smarts to pull a file from the internet and put it on disk. Let's use those smarts…

telegraf in docker wants CAP_NET_RAW

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Operation not permitted is the only error message that shows up…

Running certbot under podman

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Follow docker instructions but remember your SELinux tagging…

@JsonIgnore vs @JsonbTransient

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In new EE app servers, Jackson-specific @JsonIgnore is deprecated in favor of JSON-B's @JsonbTransient…

Podman v2 config for insecure registries

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[registries.insecure] no longer works…

Which TLS library does this use?

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In Debian 10 userspaces, most SSL connections are made via calls to OpenSSL, but LDAPS connections are made with GnuTLS. In RedHat userspaces, LDAPS is still over OpenSSL.…

Liveness and Readiness are Not Health Checks

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A change in live-site ownership between Dev and Ops has flipped inputs and outputs…