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Re:Show HN: The Cyber Plumber's Handbook – SSH Tunnel Like a... by hawkweed on Monday May 20, 2019 @10:32AM (#19960670)
I tried to download it, but it looks like your promo code expired.
Re:Show HN: The Cyber Plumber's Handbook – SSH Tunnel Like a... by opsdisk on Wednesday May 22, 2019 @06:43AM (#19979741)
As stated in the original post, it was only valid for 2 days through May 19. If you're a student, you can still get it for free. Just checkout the website for details https://cph.opsdisk.com