[167002] in North American Network Operators' Group
Re: telnet into a netgear switch?
daemon@ATHENA.MIT.EDU (Geraint Jones)
Mon Nov 25 20:22:20 2013
Date: Tue, 26 Nov 2013 12:50:01 +1300
From: Geraint Jones <geraint@koding.com>
To: <nanog@nanog.org>
In-Reply-To: <CAOMvUQdS9JZ0kD9du+nVF6D4h3CJgE+gOLsBrNfBp6Hw+XVv0g@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
It could be any number of things, APC for example need a vendor option set
in DHCP or a =B3Magic=B2 ping. It could be that the app just talks to it on L2
like Microtik=B9s. I suspect the windows app will be your only option.
--=20
Geraint Jones
On 26/11/13 12:42 pm, "David Birdsong" <david@imgix.com> wrote:
>On Nov 25, 2013 1:51 PM, "Jason Pope" <boards188@gmail.com> wrote:
>>
>> ------------------------------
>> Message: 2
>> Date: Sun, 24 Nov 2013 18:47:09 -0800
>> From: David Birdsong <david@imgix.com>
>> To: nanog@nanog.org
>> Subject: telnet into a netgear switch?
>> Message-ID:
>> <CAOMvUQfeM_Wnc=3D
>eS1vz0Gh_pp-vZ+sPRk9Td-1U0A34c3A6jdQ@mail.gmail.com>
>> Content-Type: text/plain; charset=3DISO-8859-1
>>
>> Hey all, last night while at the datacenter I was in a pinch to extend a
>> rack's LAN. I compromised and ran out to the local Fry's to buy whatever
>> switch I could find so as to allow some configuration to happen while
>> we wait for the real network gear to show up.
>>
>> I left before confirming I could access the switch remotely; it was very
>> late and I was pretty groggy and hey, any network gear has to be
>> telnet'table this day and age. Of course I was mostly wrong.
>>
>> The switch expects some signed payload before allowing a telnet
>>through. I
>> found this: https://code.google.com/p/netgear-telnetenable/...but I'm
>> having a hell of a time getting anything to respond.
>>
>> The most confounding part is the switch doesn't respond to a single SYN
>> packet on low ports. I'm scanning all the ports now, but if nothing
>>shows
>> up, I'm not sure what a payload is good for if the switch doesn't ACK a
>> single SYN.
>>
>> I'm curious if anybody's got any tips besides not using Netgear in the
>> datacenter.
>>
>> I have the MAC, I've IP'd it via DHCP, and the model number: JGS524E
>>and I
>> can power cycle the switch as much as needed.
>>
>>
>> P.S. long time listener, first time caller. i'm more of a sysadmin
>> dangerously standing in for a proper network person.
>> ------------------------------
>>
>> Seems to me that you need to use their "Switch Configuration Utility" to
>> manage the switch. I didn't read all the documentation, but that is
>>what
>> jumps out at me after a brief look. Maybe it will allow you to enable
>> telnet or ssh from there. See the following link:
>>
>
>No windows box handy, nor the desire for that hoop.
>
>...but what magic is a windows app going to perform to wake up an
>unresponsive TCP stack?
>
>> http://downloadcenter.netgear.com/en/product/JGS524E
>>
>> Jason
