[166988] in North American Network Operators' Group
Re: telnet into a netgear switch?
daemon@ATHENA.MIT.EDU (Garrett Skjelstad)
Mon Nov 25 10:01:05 2013
In-Reply-To: <CAOMvUQfeM_Wnc=eS1vz0Gh_pp-vZ+sPRk9Td-1U0A34c3A6jdQ@mail.gmail.com>
From: Garrett Skjelstad <garrett@skjelstad.org>
Date: Mon, 25 Nov 2013 07:00:46 -0800
To: David Birdsong <david@imgix.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
That netgear link you submitted is primarily for routers, not switches.
Sent from my (old) iPhone5
On Nov 24, 2013, at 18:47, David Birdsong <david@imgix.com> wrote:
> 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.
