• Chris Breen:
  Managed to close port 443 on my Mac, making it impossible to use Twitter. All attempts to open have failed.

@BodyofBreen closest-to-the-metal is ipfw. Should be there. Never heard of accidentally closing a port, though.

• Chris Breen:
  @jeffporten Any sudo magic for resetting ports to default?

@BodyofBreen In your shoes, I’d be reaching for an OS X installer. Easier than diagnosing/troubleshooting.

• Chris Breen:
  @jeffporten I did a reinstall yesterday but no go. I think I’m looking at wiping and paving.

@BodyofBreen I dunno. Used to be a GUI app—Brickhouse?—that showed ipfw settings. I’ll check the man page and email you.

• Chris Breen:
  @jeffporten it’s a long story. Not accidental but with unintended consequences.

@BodyofBreen Try “sudo ipfw list”. My unfirewalled response here: “65535 allow ip from any to any”.

@GlennF @bodyofbreen I am, but I don’t think that makes a difference for my results.

• Chris Breen:
  @jeffporten I’ve checked in Terminal and quit anything accessing 443.

• Glenn Fleishman:
  @BodyofBreen @jeffporten You’re not running Server on your desktop are you?

@BodyofBreen I think it’s in homebrew and fink, if you want to go through the trouble.

@BodyofBreen That is some pretty impressive screwing. You must be a musician.

• Chris Breen:
  @jeffporten Yep. And playing in the completely wrong key.

@BodyofBreen sudo pitchpipe -key C-Major

@BodyofBreen But it’s Saturday. Weekends are made for dicking around.

• Glenn Fleishman:
  @BodyofBreen @jeffporten Live on an Indian burial ground?

• Chris Breen:
  @jeffporten same here

@BodyofBreen AFAIK, that means it’s not OS X blocking the port. Any chance you have unintended software running?

• Chris Breen:
  @GlennF @jeffporten No.

@BodyofBreen What ISPs are you using? I’m assuming you’ve switched between a few.

• Chris Breen:
  @jeffporten This is confined to just one computer and I was screwing with network stuff on it so this is My Bad.

@BodyofBreen My next step would be: nmap all ports between computer-router, then computer-outside IP. But nmap not preinstalled.

• Chris Breen:
  @jeffporten Dicking around with things I don’t understand got me to this point. That path looks like more of the same.

@BodyofBreen (That said—agreed, wipe-and-start-over is easiest, if reinstalling apps/data isn’t onerous.)

• Chris Breen:
  @jeffporten Interesting: Booted from different drive. Still busted.

@BodyofBreen Just HTTPS?

• Chris Breen:
  @jeffporten Just Twitter’s HTTPS.

@BodyofBreen I’m thinking bizarro network error—can you connect to Twitter through IDG VPN? (And if it’s on, turn it off.)