[Systems] Media Lab dns servers down?

[Peter Pflanz]

Hello,

There was a hard coded end date in an configuration file that caused the
DNS and DHCP servers to fail while in use.
The vendor was finally able to remove and change this date in their code
and bring our equipment back online.

Service is restored.

Peter

Peter D. Pflanz
Systems Engineer
MIT Media Lab
617.452.5520 Office


On Tue, Apr 15, 2014 at 5:25 PM, Peter Pflanz <ppflanz at media.mit.edu> wrote:

> DNS has failed.  We are working on it with our vendor.
>
> Sent from my iPhone
>
> > On Apr 15, 2014, at 5:13 PM, Bernie Innocenti <codewiz at google.com>
> wrote:
> >
> > Looks like port 53 is firewalled?
> >
> > sudo nmap -O BAYER.MEDIA.MIT.EDU
> >
> > Starting Nmap 5.21 ( http://nmap.org ) at 2014-04-15 17:07 EDT
> > Nmap scan report for BAYER.MEDIA.MIT.EDU (18.85.2.138)
> > Host is up (0.032s latency).
> > Not shown: 992 closed ports
> > PORT     STATE    SERVICE
> > 23/tcp   filtered telnet
> > 53/tcp   filtered domain
> > 135/tcp  filtered msrpc
> > 139/tcp  filtered netbios-ssn
> > 445/tcp  filtered microsoft-ds
> > 873/tcp  filtered rsync
> > 9000/tcp filtered cslistener
> > 9999/tcp filtered abyss
> > Warning: OSScan results may be unreliable because we could not find at
> > least 1 open and 1 closed port
> > Device type: general purpose
> > Running: Linux 2.6.X
> > OS details: Linux 2.6.18, Linux 2.6.30
> > Network Distance: 13 hops
> >
> >
> > $ sudo nmap -O ALEVE.MEDIA.MIT.EDU
> >
> > Starting Nmap 5.21 ( http://nmap.org ) at 2014-04-15 17:06 EDT
> > Nmap scan report for ALEVE.MEDIA.MIT.EDU (18.85.28.36)
> > Host is up (0.032s latency).
> > Not shown: 987 closed ports
> > PORT     STATE    SERVICE
> > 22/tcp   open     ssh
> > 23/tcp   filtered telnet
> > 53/tcp   filtered domain
> > 80/tcp   open     http
> > 111/tcp  open     rpcbind
> > 135/tcp  filtered msrpc
> > 139/tcp  filtered netbios-ssn
> > 443/tcp  open     https
> > 445/tcp  filtered microsoft-ds
> > 1443/tcp open     ies-lm
> > 5666/tcp open     nrpe
> > 7937/tcp open     nsrexecd
> > 7938/tcp open     lgtomapper
> > Device type: general purpose|WAP|firewall|broadband
> > router|storage-misc|specialized|print server|switch
> > Running (JUST GUESSING) : Linux 2.6.X|2.4.X (90%), Check Point embedded
> > (89%), Actiontec embedded (88%), OpenBSD 4.X (86%), D-Link embedded
> > (85%), Linksys embedded (85%), Google embedded (85%), HP embedded (85%)
> > Aggressive OS guesses: Linux 2.6.15 - 2.6.26 (90%), Linux 2.6.9 -
> > 2.6.27 (90%), DD-WRT v23 (Linux 2.4.34) (90%), Linux 2.6.30 (90%),
> > Linux 2.6.18 (90%), Linux 2.6.23 (89%), Check Point ZoneAlarm Z100G
> > firewall (89%), Actiontec GT701 DSL modem (88%), Linux 2.6.18 - 2.6.28
> > (87%), Linux 2.6.24 (87%)
> > No exact OS matches for host (test conditions non-ideal).
> > Network Distance: 13 hops
> >
> >
> >> On Tue 15 Apr 2014 05:03:55 PM EDT, Bernie Innocenti wrote:
> >> +pgf@
> >>
> >> Does anyone have a phone contact for NecSys?
> >>
> >>> On 04/15/2014 04:48 PM, Bernie Innocenti wrote:
> >>> Cc'ing some OLPC folks.
> >>>
> >>>> On 04/15/2014 04:41 PM, Bernie Innocenti wrote:
> >>>> You might know already, but both the DNS servers used by laptop.orgseem
> >>>> down:
> >>>>
> >>>> ALEVE.MEDIA.MIT.EDU
> >>>> BAYER.MEDIA.MIT.EDU
> >
> >
> >
> > --
> > Bernie Innocenti | Search Infrastructure
> >
>
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