/dev/chat

12:27 AM

7

Q: If we built two-factor authentication for Stack Exchange OpenID, would you use it?

[Related: Two factor authentication for Stack Exchange] So, over the last couple of weeks, I built a bare-bones two-factor authentication system for Stack Exchange OpenID. Currently, it only supports: Logging in via Stack Exchange OpenID Google Authenticator-style code generation Recovery code...

techie_28

7:15 AM

anyone upgraded to Debian Jessie?

Im having wifi connectivity issues with that

connects to network but no internet access

derobert

7:31 AM

@techie_28 several of us have. You should probably try asking a question with details

techie_28

0

Q: Connectivity issues after updating to Debian Jessie

I hope this is a right place to seek help. I have inadvertently upgraded to Debian Jessie from Debian Wheezy while I was trying to install VLC player :D. The upgrade did not go very well as my sources.list file was mix of wheezy and Jessie(Jessie was declared stable and my sources.list was having...

debian wifi gnome3 debian-installer iwlwifi

my question

has anyone faced such an issue before?

Braiam

8:05 AM

we really should have a "how to diagnostic network/wifi issues"

techie_28

8:31 AM

@Braiam yes we shuld..this really is affecting me as it was smooth in wheezy and I was not able to get this resolve over Debian IRC from 2 days.. :( :(

Faheem Mitha

@techie_28 what does apt-show-versions give?

Also, don't put links in there. Just the output.

Some details about the wireless card and the associated driver would also be helpful. And have you upgraded the kernel?

uname -a

Also, check what your logs have to say about the wireless. syslog and messages.

Braiam

8:50 AM

@techie_28 I have to ask, exactly what's the problem? As far I can see, you should not have problems

techie_28

9:21 AM

@FaheemMitha uname -a gives Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt9-3~deb8u1 (2015-04-24) i686 GNU/Linux

Debian version is 8.0

I have intel network card

@Braiam I am able to connect to the WIFI network but can not access Internet

Im using iwlwifi driver

Faheem Mitha

@techie_28 logs?

techie_28

how to filter the logs?I can see Network Manager and iwlwifi in that

Faheem Mitha

@techie_28 Just bring the network down and then up. see what the logs say. you could do tail -f.

Do they have anything that looks like an error?

/var/log/syslog, /var/log/messages.

derobert

btw... going to bed, but aptitude's Views → Audit Recommendations might be useful. If it turns out a package is missing.

techie_28

@FaheemMitha iwlwifi: has can't disable ASPM; OS doesn't have ASPM control and other then that provides my network card info

Faheem Mitha

9:35 AM

@techie_28 I don't understand that at all.

Are you quoting a log?

@techie_28 you can run some tests for basic package sanity.

techie_28

yes only that line looks like an error/warning

Faheem Mitha

dpkg -C, apt-get -f install.

"has can't disable ASPM"? Does it really have that?

@techie_28 Ok, paste that into the question then. and state which log it is from.

techie_28

precisely this "can't disable ASPM; OS doesn't have ASPM control:

it was in system log

derobert

really going to bed after this... that ASPM line is a fairly normal message and probably nothing to worry about. Except that it may be costing you a few mW of power savings.

techie_28

How can I make sure if I do not have the mix of Wheezy and Jessie?

Faheem Mitha

9:39 AM

@techie_28 Ok, leave it out then.

apt-show-versions

No, actually, that is useless.

@techie_28 what do dpkg -C and apt-get -f install give?

Also apt-get dist-upgrade. And what is the output of apt-cache policy?

techie_28

I have put the policy in the question

@FaheemMitha: some one was able to help me with that on the Debian IRC..

@FaheemMitha: He told me to do "ifconfig eth0 down" as he suspected eth0 to be occupying my default gateway.. as soon I did that the WIFI came up and was able to access internet

Faheem Mitha

@techie_28 ok

techie_28

@FaheemMitha: Thanks for your help :)

thanks all

@FaheemMitha: but this was not a problem in Wheezy

I did not had to do that when I wanted to use WIRED or WIRELESS connection

just plugging the LAN cable made it work and turning on the WIFI instantly use to run the internet

any Idea why is this please?

Braiam

9:57 AM

@techie_28 the most important here is the ping output, the wifi device is correctly detected and conected to a network, but we need to know if is able to reach outside and/or resolve domains

don't worry about packages right now

techie_28

@Braiam some one on IRC node suggested me to "Ifconfig eth0 down" and now Internet works via WIFI.

Braiam

@techie_28 cat /etc/network/interfaces

techie_28

but Im not sure why is that

@Braiam here it is paste.debian.net/180979

Braiam

@techie_28 remove the two last lines

and restart the system, it should work

Faheem Mitha

@Braiam I assume he wants the primary network interface

Braiam

10:05 AM

@FaheemMitha network manager should be the one configuring all of them, instead of ifup/down

Faheem Mitha

@techie_28 are you using /etc/network/interfaces?

@Braiam Oh, if he is not using it, then yes.

@techie_28 you are using network manager?

Probably dumb question. How do you configure network-manager to manage your network?

Braiam

@FaheemMitha he's connecting to the wifi, yet interfaces doesn't have an entry for it

@FaheemMitha you don't

Faheem Mitha

@Braiam true. but your inference that network-manager is handling stuff still seems a bit of a stretch

Braiam

unless you don't use dhcp

techie_28

I just tried to connect using default tools of Debian..

that is the Network Manager right?

Faheem Mitha

10:07 AM

@Braiam I have network-manager installed. As far as I know, it is not doing anything.

techie_28

where I can see the list of WIFI networks..switch to wired

Faheem Mitha

@techie_28 no. network manager is some ubuntu thing.

Braiam

@FaheemMitha no, is not Ubuntu's

NM came before Ubuntu

Faheem Mitha

@Braiam Oh?

Braiam

@techie_28 how you connect to your wireless network?

do you click any icon anywhere?

techie_28

10:08 AM

There is a WIFI icon in top right menu which has the options like
Select Network,Turn Off,Wifi Settings etc.

I do it from there

Braiam

that's network manager

techie_28

It also show WIRED sometimes but sometimes it doesnt

yea

WIRED always said DISCONNECTED even when internet was running via LAN Cable

Faheem Mitha

According to wiki.archlinux.org/index.php/… you need to start it up, then it will work

@techie_28 personally, I've never used network manager, and it strikes me as too magical.

Braiam

@techie_28 because it was unmanaged, since you had an entry in interfaces

Faheem Mitha

I've always just used /etc/network/interfaces.

Braiam

10:10 AM

@FaheemMitha but unicorns are magical creatures too!

Faheem Mitha

@Braiam Let's leave unicorns out of this.

techie_28

what should I do in the interfaces file if I want ETHERNET to run if WIFI is off?

Braiam

@techie_28 just turn down the wifi with the icon

techie_28

how about DHCP?

Braiam

NM manages that

Faheem Mitha

10:19 AM

@techie_28 my personal preference is to take network manager out of the picture.

but ymmv

techie_28

10:57 AM

thanks @Braiam @FaheemMitha

:)

Braiam

12:49 PM

weakdh.org

2

next big security issue

so... upgrade your servers, browsers, TLS

Gilles

@Braiam the site is down , but from the discussion in the DMZ, this seems to be a vulnerability in default server configurations, not in servers or browsers

so just upgrading the software wouldn't fix it

Braiam

@Gilles client side is vulnerable, no?

Gilles

@Braiam It's a protocol vulnerability, so it doesn't really make sense to say that the client or server side is vulnerable. I don't know the details, I don't know whether one of the sides can fix the problem on its own.

Braiam

@Gilles If I read Tom correctly "if the client and server accept to use weak crypto" so, it can be preventable if the client doesn't accept the weak crypto. You wouldn't be able to connect to the site, but is better than the alternative

Gilles

in The DMZ, 53 mins ago, by Thomas Pornin

In a nutshell, if the client and server accept to use weak crypto (DH with a 512-bit modulus), well, it's weak and can be broken.

ah, yes, this one can be fixed on either side

WuerfelDev

5:16 PM

Is someone here who can help me writing a simple python script?

how can i turn this answer: unix.stackexchange.com/a/89187 to a python script?

Braiam

@WuerfelDev the answer is already in python...

WuerfelDev

but how to turn this to a complete python script? I don't understand how to deal with the termios, and where to include it

casey

@WuerfelDev then I suggest you take the comments suggestion and use pySerial

pyserial.sourceforge.net

they even implement miniterm with it, so you can see how it works

sourceforge.net/p/pyserial/code/HEAD/tree/trunk/pyserial/serial/…

WuerfelDev

5:37 PM

thank you a lot

casey

@WuerfelDev thank google, not me

derobert

7:58 PM

@FaheemMitha /etc/network/interfaces is a PITA on a laptop that moves between a bunch of networks. I use Network Manager on my laptop (but not my desktops or servers).

Faheem Mitha

@derobert Does it work well?

derobert

Yes.

And it's not really magical.

Faheem Mitha

@derobert If you say so. I'm not fond of GUi type things, anyway.

derobert

@Braiam Wow, I remember how much of a PITA it was to convince a bunch of IPSec things a while back that no, really, I wanted a 1536-bit prime. I can imagine a lot are running with smaller ones...

derobert

8:35 PM

Well, I'm happy to find that my OpenVPN setups are using extra-paranoid 4096-bit DH primes

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