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Q&A How do I diagnose TLS errors?

Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have. Tool Description From Current? ...

posted 2mo ago by Michael‭  ·  edited 2mo ago by Michael‭

Answer
#5: Post edited by user avatar Michael‭ · 2024-03-06T19:08:28Z (2 months ago)
Links!
  • Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have.
  • | Tool | Description | From | Current? |
  • |------|-------------|------|----------|
  • | [`sslyze`][sslyze] | TLS analysis by protocol | | &check; |
  • | [`cipherscan`][cipherscan] | TLS analysis by cipher. Slightly clunky. | Mozilla | &cross; |
  • | [`pshtt`][pshtt] | HTTPS + HSTS analysis, old `sslyze` | CISA | &cross; |
  • `sslyze` works fantastic if you just want to scan periodically for broken certificate chains, weak cryptography, and whether your server(s) are vulnerable to the exploit _du jour._[^vuln]
  • If you also want some HTTP analysis, you can rig an old Python[^pshtt-complaints] to also scan with `pshtt`.
  • [^vuln]: Poodle, Heartbleed, Robot, etc.
  • [^pshtt-complaints]: If you visit the issue section for `pshtt`, you will find people wondering why CISA doesn't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
  • Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have.
  • | Tool | Description | From | Current? |
  • |------|-------------|------|----------|
  • | [`sslyze`][sslyze] | TLS analysis by protocol | | &check; |
  • | [`cipherscan`][cipherscan] | TLS analysis by cipher. Slightly clunky. | Mozilla | &cross; |
  • | [`pshtt`][pshtt] | HTTPS + HSTS analysis, old `sslyze` | [CISA][] | &cross; |
  • `sslyze` works fantastic if you just want to scan periodically for broken certificate chains, weak cryptography, and whether your server(s) are vulnerable to the exploit _du jour._[^vuln]
  • If you also want some HTTP analysis, you can rig an old Python[^pshtt-complaints] to also scan with `pshtt`.
  • [^vuln]: [Poodle][], [Heartbleed][], [Robot][], etc.
  • [^pshtt-complaints]: The issue section for `pshtt` includes several comments asking why CISA doesn't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
  • [cisa]: https://www.cisa.gov
  • [poodle]: https://www.cisa.gov/news-events/alerts/2014/10/17/ssl-30-protocol-vulnerability-and-poodle-attack
  • [heartbleed]: https://heartbleed.com
  • [robot]: https://robotattack.org
#4: Post edited by user avatar Michael‭ · 2024-03-05T17:11:29Z (2 months ago)
Specifically mention crypto, because that's a main feature.
  • Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have.
  • | Tool | Description | From | Current? |
  • |------|-------------|------|----------|
  • | [`sslyze`][sslyze] | TLS analysis by protocol | | &check; |
  • | [`cipherscan`][cipherscan] | TLS analysis by cipher. Slightly clunky. | Mozilla | &cross; |
  • | [`pshtt`][pshtt] | HTTPS + HSTS analysis, old `sslyze` | CISA | &cross; |
  • `sslyze` works fantastic if you just want to scan periodically for broken certificate chains and whether your server(s) are vulnerable to Poodle, Heartbleed, or the exploit _du jour._
  • If you also want some HTTP analysis, you can rig an old Python[^pshtt-complaints] to also scan with `pshtt`.
  • [^pshtt-complaints]: If you visit the issue section for `pshtt`, you will find people wondering why CISA doesn't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
  • Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have.
  • | Tool | Description | From | Current? |
  • |------|-------------|------|----------|
  • | [`sslyze`][sslyze] | TLS analysis by protocol | | &check; |
  • | [`cipherscan`][cipherscan] | TLS analysis by cipher. Slightly clunky. | Mozilla | &cross; |
  • | [`pshtt`][pshtt] | HTTPS + HSTS analysis, old `sslyze` | CISA | &cross; |
  • `sslyze` works fantastic if you just want to scan periodically for broken certificate chains, weak cryptography, and whether your server(s) are vulnerable to the exploit _du jour._[^vuln]
  • If you also want some HTTP analysis, you can rig an old Python[^pshtt-complaints] to also scan with `pshtt`.
  • [^vuln]: Poodle, Heartbleed, Robot, etc.
  • [^pshtt-complaints]: If you visit the issue section for `pshtt`, you will find people wondering why CISA doesn't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
#3: Post edited by user avatar Michael‭ · 2024-03-04T20:40:17Z (2 months ago)
Rearrange the chart. Editorialize.
  • I have used a couple tools for things like that. One of them may include diagnosis of whatever you're running into.
  • | Tool | Description |
  • |------|-------------|
  • | [`sslyze`][sslyze] | Protocol-first analysis of SSL settings. |
  • | [`cipherscan`][cipherscan] | Cipher-first analysis of same. Slightly clunky. |
  • | [`pshtt`][pshtt] | CISA-made HTTPS analysis, including HSTS stuff.[^1] Imports `sslyze`. |
  • [^1]: If you visit the issue section for [`pshtt`][pshtt], you will find annoyed people wondering why they don't support recent Python versions. But it does have some extra analysis if you're doing this for HTTP stuff.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
  • Over some period of time, I have used a couple tools for local TLS scans and diagnostics. One of them may include pointers for whatever situation you have.
  • | Tool | Description | From | Current? |
  • |------|-------------|------|----------|
  • | [`sslyze`][sslyze] | TLS analysis by protocol | | &check; |
  • | [`cipherscan`][cipherscan] | TLS analysis by cipher. Slightly clunky. | Mozilla | &cross; |
  • | [`pshtt`][pshtt] | HTTPS + HSTS analysis, old `sslyze` | CISA | &cross; |
  • `sslyze` works fantastic if you just want to scan periodically for broken certificate chains and whether your server(s) are vulnerable to Poodle, Heartbleed, or the exploit _du jour._
  • If you also want some HTTP analysis, you can rig an old Python[^pshtt-complaints] to also scan with `pshtt`.
  • [^pshtt-complaints]: If you visit the issue section for `pshtt`, you will find people wondering why CISA doesn't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
#2: Post edited by user avatar Michael‭ · 2024-03-04T16:54:25Z (2 months ago)
Table formatting on real site different from preview.
  • I have used a couple tools for things like that. One of them may include diagnosis of whatever you're running into.
  • | Tool | Description |
  • |------|-------------|
  • | [`sslyze`][sslyze] | Protocol-first analysis of SSL settings. |
  • | [`cipherscan`][cipherscan] | Cipher-first analysis of same. Slightly clunky. |
  • | [`pshtt`][pshtt] | CISA-made HTTPS analysis, including HSTS stuff. If you visit their issue section, you will find annoyed people wondering why they don't support recent Python versions.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
  • I have used a couple tools for things like that. One of them may include diagnosis of whatever you're running into.
  • | Tool | Description |
  • |------|-------------|
  • | [`sslyze`][sslyze] | Protocol-first analysis of SSL settings. |
  • | [`cipherscan`][cipherscan] | Cipher-first analysis of same. Slightly clunky. |
  • | [`pshtt`][pshtt] | CISA-made HTTPS analysis, including HSTS stuff.[^1] Imports `sslyze`. |
  • [^1]: If you visit the issue section for [`pshtt`][pshtt], you will find annoyed people wondering why they don't support recent Python versions. But it does have some extra analysis if you're doing this for HTTP stuff.
  • [sslyze]: https://github.com/nabla-c0d3/sslyze
  • [cipherscan]: https://github.com/mozilla/cipherscan
  • [pshtt]: https://github.com/cisagov/pshtt
#1: Initial revision by user avatar Michael‭ · 2024-03-04T16:51:22Z (2 months ago) 
I have used a couple tools for things like that. One of them may include diagnosis of whatever you're running into.

| Tool | Description |
|------|-------------|
| [`sslyze`][sslyze] | Protocol-first analysis of SSL settings. |
| [`cipherscan`][cipherscan] | Cipher-first analysis of same. Slightly clunky. |
| [`pshtt`][pshtt] | CISA-made HTTPS analysis, including HSTS stuff. If you visit their issue section, you will find annoyed people wondering why they don't support recent Python versions.


[sslyze]: https://github.com/nabla-c0d3/sslyze
[cipherscan]: https://github.com/mozilla/cipherscan
[pshtt]: https://github.com/cisagov/pshtt