64 lines
4.2 KiB
Plaintext
64 lines
4.2 KiB
Plaintext
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Episode: 1985
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Title: HPR1985: Fixing Bug 1092571
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Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr1985/hpr1985.mp3
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Transcribed: 2025-10-18 12:51:37
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---
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This episode of HBR is brought to you by AnanasThost.com.
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Get 15% discount on all shared hosting with the offer code HBR15 that's HBR15.
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Take your web hosting that's Honest and Fair at AnanasThost.com.
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Hi, I'm at the Google Osomar code booth with Jeremy.
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We aim to view you before.
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How are you doing?
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It's me.
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Hi.
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Yes.
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I have a bug.
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And this is what FastTime is all about getting bugs face.
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I can connect to a Windows Server via Dolphin or Nautilus, but I can't connect via EGCE FS tab.
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Why is that?
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So the reason is almost certainly that, well, I can tell you the difference between the FS tab and Nautilus,
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Nautilus uses LibSNB Client, which is code that we write as part of the Samba project.
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Now LibSNB Client supports both SMB1 and SMB2 and Kerberus and NTLM.
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The kernel client is a little more limited.
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So the reason you can browse to it using Nautilus and go straight in is it's almost certainly using SMB2.
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The kernel client, depending on what the kernel is, may not be supporting SMB2.
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It certainly supports SMB1.
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If your Windows Server has been upgraded and they may have turned off SMB1, then the kernel client won't be able to connect.
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You'll need an SMB2 kernel client in order to connect.
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Now, I haven't kept track of the kernel client because like you, I often use Nautilus, if I'm browsing to my Windows chairs,
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or I don't use Windows, if I'm browsing to my Samba chairs.
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So I usually use Nautilus for that, so I very rarely do a kernel mount.
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So you're going to have to check into the kernel version and whether it supports SMB2.
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The way to tell if this is the case is to run Wireshark, listen on port 445, between both client and server IP addresses,
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and then browse to it via Nautilus.
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And then, save off the capture trace, look at it, and find out if the protocol listed in the protocols field is SMB2.
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If it is, try and do the same mount as you're doing normally from the kernel client, capture the same thing.
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And if you see it trying to open at SMB1 connection, you know what the problem is.
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So what's the difference between SMB1 and SMB2?
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SMB2 is Microsoft's modern file sharing protocol.
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SMB1 is the original DOS version that went all the way up to Windows XP and server 2003 or something.
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With Vista and above, they created a new protocol SMB2.
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It's actually, funnily enough, with Samba to Samba, we could get the same performance out of SMB1 that Windows gets.
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They have to create a new protocol to do, because we pipeline our reads and writes on the wire.
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They do that now with SMB2, but they have to change, they were so frightened of changing the SMB1 code in the Windows client,
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because nobody understands it anymore, that they invented a new protocol so that they could create a new client that they can fix.
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So that, the SMB2 client pipeline reads and writes.
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They also integrated our idea of doing transport level encryption, so you can have an encrypted connection.
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That's actually, they had to wait for SMB3 to get that.
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But anyway, so SMB2 means SMB2 or above, which goes all the way up to 3.x.
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It's a more modern protocol, it's all handle-based, it does much larger reads and writes, it does more asynchronous,
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it's kind of a more modern file sharing protocol.
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But we implemented it anyway, so, you know, this is your fault for using Windows Server if it was Samba, it would have just worked.
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But that's, I'll thank you very, very much.
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No problem.
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You've been listening to Hecker Public Radio at HeckerPublicRadio.org.
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Hecker Public Radio was founded by the Digital Dove Pound and the Inflanomicon Computer Club,
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and is part of the binary revolution at binrev.com.
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If you have comments on today's show, please email the host directly, leave a comment on the website or record a follow-up episode yourself.
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Unless otherwise stated, today's show is released under Creative Commons, Attribution, share a like, 3.0 license.
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