Re: [PLUG] Nothing on monitors

[King Beowulf]

On Saturday, June 25, 2016, Dick Steffens  wrote:

> I'm typing this on my laptop.
>
> I've just set up my computer after it was off for a couple of weeks. I'm
> installed at a friend's house, so I don't know much about the local
> network except that it's 192.168.1.xxx being fed by a Netgear WNR1000.
>
> I plugged all the stuff together for my desktop computer ... two
> monitors, power and data connected, monitor pilot lights blink. I've got
> a keyboard and a mouse connected, and the Ethernet cable is connected.
> Power to the box is connected. Speakers are connected and powered.
>
> When I turn power on to the computer, I hear it do all it's usual stuff,
> but nothing appears on the monitors. At this point I don't know what
> it's IP address is, so I can't try connecting from the laptop.
>
> Any ideas where I should look next?
>
> Is there a way, using my laptop, to find out what IP address the WNR1000
> assigned to the desktop computer? The laptop is connected to the WNR1000
> via WiFi. I've also got my wife's Win7 machine up and running on the
> same network.
>
> Clue stick appreciated.
>
> --
> Regards,
>
> Dick Steffens
>
>
When you initially set up the desktop networking, you gave it a name.  The
wigi router dhcp knows what it is if it assigned an IP address lease so do

ssh @

Also, the netgear router has a list of all dhcp address assigned.  log in
via

http://192.168.1.1 from any attached computer

if desktop seems to fire up but has no video after a move

1. reseat video card
2. check for bent pins on video cable
3. plug monitor into know good computer



-- 
You! What PLANET is this!
-- McCoy, "The City on the Edge of Forever", stardate 3134.0
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Re: [PLUG] Show of hands/poll on tcpdump

[Mike C.]

>
> > If asked to self assess your tcpdump comfort level would you reply with:
> >
> > >>* I'm great, what do you need done?
> > >>* I'm comfortable, can do capture with filtering
> > >>* I'm rusty, but could spin up quick
> > >>* Only use it with the man page handy for reference
> > >>* tcpwhat?


Very comfortable with the commonly used options in network troubleshooting
such as interface, protocol/port, packet type, host, monitoring, etc.

Which is a reflection of how I've used it as a Network Engineer.

Troubleshooting client/server software communication would take some time
reading and tinkering.

The far more difficult thing with tcpdump is being able to make sense of
the output.
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Re: [PLUG] Show of hands/poll on tcpdump

[Nathan Williams]

Fair to middling, mostly can find what's needed without searching, but
still regularly search for syntax on advanced matching filters

On Mon, Jun 27, 2016, 5:41 PM Dick Steffens  wrote:

> On 6/27/2016 10:55 AM, Michael Rasmussen wrote:
> >> If asked to self assess your tcpdump comfort level would you reply with:
> >>
> >>* I'm great, what do you need done?
> >>* I'm comfortable, can do capture with filtering
> >>* I'm rusty, but could spin up quick
> >>* Only use it with the man page handy for reference
> >>* tcpwhat?
> >>
> >> Back story after a few responses roll in.
> >>
>
> Well, to provide a floor, "tcpwhat?"
>
> --
> Regards,
>
> Dick Steffens
>
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Re: [PLUG] Show of hands/poll on tcpdump

[Dick Steffens]

On 6/27/2016 10:55 AM, Michael Rasmussen wrote:
>> If asked to self assess your tcpdump comfort level would you reply with:
>>
>>* I'm great, what do you need done?
>>* I'm comfortable, can do capture with filtering
>>* I'm rusty, but could spin up quick
>>* Only use it with the man page handy for reference
>>* tcpwhat?
>>
>> Back story after a few responses roll in.
>>

Well, to provide a floor, "tcpwhat?"

-- 
Regards,

Dick Steffens

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Re: [PLUG] Show of hands/poll on tcpdump

[Don Buchholz]

comfortable
-- filtering on host name/IP, protocol (IP, IPv6, TCP, UDP, ARP 
...), port, or MAC address
-- more complex filtering (packet inspection) will require 
(man+Google)-Fu

On 6/27/2016 10:55 AM, Michael Rasmussen wrote:
> If asked to self assess your tcpdump comfort level would you reply with:
>
>   * I'm great, what do you need done?
>   * I'm comfortable, can do capture with filtering
>   * I'm rusty, but could spin up quick
>   * Only use it with the man page handy for reference
>   * tcpwhat?
>
> Back story after a few responses roll in.
>

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Re: [PLUG] Show of hands/poll on tcpdump

[Russell Senior]

> "chris" == chris (fool) mccraw  writes:

chris> somewhere between 2 and 3, but i would refer to the man page for
chris> anything I hadn't done recently.  Much like every other unix
chris> utility with more than a handful of flags (eg ls, tar, bash) -
chris> even the ones i use extensively & daily - I refer to the man page
chris> despite familiarity with the tool.

I have a one-liner in a script I wrote that only captures tcp syn
packets (not syn-ack).  I wouldn't say I know every filtering option
intimately, but i'm willing to hookup with what I need as needed.


-- 
Russell Senior, President
russ...@personaltelco.net
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Re: [PLUG] Show of hands/poll on tcpdump

[chris (fool) mccraw]

somewhere between 2 and 3, but i would refer to the man page for anything I
hadn't done recently.  Much like every other unix utility with more than a
handful of flags (eg ls, tar, bash) - even the ones i use extensively &
daily - I refer to the man page despite familiarity with the tool.

On Mon, Jun 27, 2016 at 2:45 PM, Bill Barry  wrote:

> On Jun 27, 2016 10:56 AM, "Michael Rasmussen"  wrote:
> >
> > If asked to self assess your tcpdump comfort level would you reply with:
> >
> >  * I'm great, what do you need done?
> >  * I'm comfortable, can do capture with filtering
> >  * I'm rusty, but could spin up quick
>
> I am right in here. It has been about three years since I needed it.
>
> Bill
>
> >  * Only use it with the man page handy for reference
> >  * tcpwhat?
> >
> > Back story after a few responses roll in.
> >
> >
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Re: [PLUG] Show of hands/poll on tcpdump

[Bill Barry]

On Jun 27, 2016 10:56 AM, "Michael Rasmussen"  wrote:
>
> If asked to self assess your tcpdump comfort level would you reply with:
>
>  * I'm great, what do you need done?
>  * I'm comfortable, can do capture with filtering
>  * I'm rusty, but could spin up quick

I am right in here. It has been about three years since I needed it.

Bill

>  * Only use it with the man page handy for reference
>  * tcpwhat?
>
> Back story after a few responses roll in.
>
>
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Re: [PLUG] Show of hands/poll on tcpdump

[Paul Heinlein]

On Mon, 27 Jun 2016, Michael Rasmussen wrote:


If asked to self assess your tcpdump comfort level would you reply with:

* I'm comfortable, can do capture with filtering
* I'm rusty, but could spin up quick


Somewhere between these two, though my filtering chores have tended to 
be limited to filtering by host.


--
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heinl...@madboa.com
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Re: [PLUG] NAS System suggestions

[John Jason Jordan]

On Tue, 21 Jun 2016 21:04:39 -0700
John Jason Jordan  dijo:

>I need a NAS system which includes a two-bay enclosure capable of
>holding two 6TB drives, and I want to start out with just one 6TB
>drive. 

Thanks again to all for the help and suggestions. Just now I placed an
order with Amazon for the Synology DS216j ($170) and one WD Red Pro
drive WD6002FFWX ($285). I crossed my fingers as I clicked on the
Confirm Purchase button. 
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Re: [PLUG] Show of hands/poll on tcpdump

[wes]

s/man page/google results for the specific thing I'm trying to do/ <---
this is me.

-wes

On Mon, Jun 27, 2016 at 10:55 AM, Michael Rasmussen 
wrote:

> If asked to self assess your tcpdump comfort level would you reply with:
>
>  * I'm great, what do you need done?
>  * I'm comfortable, can do capture with filtering
>  * I'm rusty, but could spin up quick
>  * Only use it with the man page handy for reference
>  * tcpwhat?
>
> Back story after a few responses roll in.
>
> --
>   Michael Rasmussen, Portland Oregon
> Be Appropriate && Follow Your Curiosity
> Somewhere on this planet someone with older gear than I have…
> less gear than I have… is taking better photos than I am.
> ~ Zack Arias
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[PLUG] Show of hands/poll on tcpdump

[Michael Rasmussen]

If asked to self assess your tcpdump comfort level would you reply with:

 * I'm great, what do you need done?
 * I'm comfortable, can do capture with filtering
 * I'm rusty, but could spin up quick
 * Only use it with the man page handy for reference
 * tcpwhat?

Back story after a few responses roll in.

-- 
  Michael Rasmussen, Portland Oregon  
Be Appropriate && Follow Your Curiosity
Somewhere on this planet someone with older gear than I have… 
less gear than I have… is taking better photos than I am.
~ Zack Arias
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Re: [PLUG] NAS System suggestions

[Tomas Kuchta]

On Saturday, June 25, 2016 12:26:59 PM wes wrote:
> On Fri, Jun 24, 2016 at 9:49 PM, Tomas Kuchta 
> wrote:
> > On Friday, June 24, 2016 04:21:17 PM wes wrote:
> > > > I do not see too many positives for using SMB on linux, without real
> > 
> > samba
> > 
> > > > user space mount option available.
> > > 
> > > As much as I hesitate to spend any time advocating for M$-originated
> > > technologies, I must say I do not see the challenge here. I mount SMB
> > > shares (from all walks of OS life) in my userspace without any elevated
> > > privileges all the time. When I need them to persist, I write a cronjob
> > 
> > to
> > 
> > > monitor their status and restore them as needed.
> > 
> > Just wondering - Would you share how do you mount SMB in user space?
> > I mean mount not type smb://serverName/dir into some sort of GUI browser.
> 
> mount -t cifs //10.3.14.123/c$ ~/c -ouser=wes
> 
> it then prompts for my password, and mounts the share
> 
> -wes

Thanks, This is not user space mount though - it requires root access and 
imagine having 15 users not sharing passwords. This is the obstacle to using 
SMB on Linux as I see it.

If you put the password to a file and protect it, then there is no user 
separation/access control as all the files on the SMB share will be owned by 
single user. If you figure out a way around mount for a user, and you have two 
different users trying to mount the same thing using different users - then 
you are toast too. If a user forgets to umount then you need root intervention 
too.

I do not want to sound negative about usefulness of SMB on Linux - I was 
really hoped that someone knows how to make it work as per Unix/Linux. :-)

Anyway, let's not hijack this post to SMB bashing.
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Re: [PLUG] NAS System suggestions

[Tomas Kuchta]

Is this linux forum? Did I miss something?

On Friday, June 24, 2016 11:20:26 PM r...@dimstar.net wrote:
> > On Jun 24, 2016, at 9:49 PM, Tomas Kuchta 
> > wrote:
> > 
> > Just wondering - Would you share how do you mount SMB in user space?
> > I mean mount not type smb://serverName/dir into some sort of GUI browser
> 
> But that is exactly how you mount in Windows. Then you assign a drive
> letter, and poof, it's mounted. This can be either in a file explorer or
> work alike or at a command prompt.
> 
> On OS X, one opens the finder, an navigates to the /Volumes/DriveName, and
> the drive was auto mounted for me...
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Re: [PLUG] NAS System suggestions

[Michael Dexter]

On 6/25/16 4:41 PM, Michael Rasmussen wrote:
> On Sat, Jun 25, 2016 at 03:47:18PM -0500, Louis Kowolowski wrote:
>>> Regarding XFS, why would you need ways to zero out data? I
>>> thought the whole point was to keep the data…isn’t that why we’re
>>> storing it? I mean…srsly.
> To prevent those that should have access to what is private to
> getting at it.

Encrypt.

Unless you mean the nulling-out of files:

https://www.google.com/webhp?sourceid=chrome-instant=1=2=UTF-8#q=xfs%20null%20files

(I love the solved, not solved nature of it.)

Michael
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