Re: loss of SOME connectivity
- From: "Larry Struckmeyer" <lstruckmeyer(at)mis-wizards(dot)com>
- Date: Sun, 18 Nov 2007 06:48:30 -0500
I "think" it is DNS. Can you plug a system that has no ISA firewall active
directly into the inet and put in the ISP settings on the NIC, including the
DSN servers in the ip properties of its network connection? (of course, if
those settings are dynamic, they will populate automagically)
If the system is a member of the domain you may have to log on to the local
system with a local account, preferable the local administrator so you can
adjust the IP settings.
or:
Some of the bigger orgs use rotating ip addresses and you can never be
certain which is the "right" one at the moment.
here is the current (0630 EST) for yahoo.com, which is a place holder with
message to put in a name and not a number.
http://66.94.234.13/
try pinging the address as in:
Ping 66.94.234.13
if that works, put it in a browser in this format:
http://66.94.234.13/
does that open?
Try pinging this address, it is for 3COM.com, and it was a valid ip when I
tried it.
192.136.34.41
then put it in a browser in this format:
http://192.136.34.41/
you can copy and paste.
Does the site open using the ip number?
if not, what is the exact error on your screen?
and here is www.microsoft.com
ping 207.46.193.254
it will say it is pinging it, but then time out because MS is setup to not
respond to pings. But the site should open by ip if they have not rotated
out of that server by the time you try it.
http://207.46.193.254/
Does any of these sites open using the ip number?
if not, what is the exact error on your screen?
--
Larry
"Howard O. Kieffer" <HowardOKieffer@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:BA254195-D348-4C26-8D11-3C99DD62BAB8@xxxxxxxxxxxxxxxx
Thanks for the response.
I cannot ping out - Ping could not find host yahoo.com.
The DNS ip address for our ISP are in the correct place in the router
settings
Yes, I can ping the router, AND the ISP DNS.
Yes, I can open the Linksys management site
I cannot connect the inet cable directly to the server because the inet is
in the basement and I am on floor 2.
MS firewall not started. Linksys firewall in place (always has been).
I can VNC in AND out.
ICS = ??
--
Howard O. Kieffer
"Larry Struckmeyer" wrote:
Hi Howard:
From the server, if you ping yahoo.com do you get an ip address followed
by
reply or no reply or time out or?
If you get an ip, can you ping the ip - reply - reply - reply - reply.
Are the DNS ip addresses for your ISP in the forwarders tab of DNS in
Administrative Tools, DNS?
Can you ping the ip address of the Linksys router? But not the ISP DNS?
Can you browse to, and open the Linksys web management site on the router
(typically 192.168.1.1)
If you take the router off and connect the inet cable directly to the
server
(and adjust the settings on the external nic), does it ping properly
then?
Something has taken a bump. I suspect the router if you can't ping past
it,
but it could be the ISP has changed DNS settings on you and "forgot" to
tell
you. Verizon uses DNS of 4.2.2.1 - .2 - .3 - .4 can you ping any of
those?
Any relevant errors in your event logs? Any third party firewalls or is
the
MS Firewall and ICS service started? (It should not be.)
--
Larry
"Howard O. Kieffer" <HowardOKieffer@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:E0D98932-8EAC-4DE4-8527-FDD5148FF23D@xxxxxxxxxxxxxxxx
Thanks for both your responses. But, perhaps I've confused you.
I have SBS 2003 SP2 Premium. I have run CEICW - both with the firewall
and
without (the router has a firewall). VNC works just fine.
The PROBLEM is that I can not send/receive email through the server,
nor
can
it browse the internet.
--
Howard O. Kieffer
"Merv Porter [SBS-MVP]" wrote:
832880 is a mighty old hotfix and wsa issued way back when because of
a
problem on the install CD for Companyweb. At this point, I'd re-run
CEICW,
enable the firewall, select the services and then finish CEICW. If
you
have
ISA installed, I'd also check to make sure that the Protocol
definition
and/or Packet filter for VNC is still enabled.
If you haven't already, I'd make plans to upgrade your server to SBS
2003
SP1 and, if you have SBS Premium, order the SBS 2003 Premium SP1 CD3
as
this
will become unavailable after Dec. 31, 2007.
--
Merv Porter [SBS-MVP]
============================
"Howard O. Kieffer" <HowardOKieffer@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote
in
message news:F381D492-A7B1-44F6-BC87-3D1AD61BED16@xxxxxxxxxxxxxxxx
I agree.
Yes, automatic updates iunstalls automatically (not any longer).
I use the firewall on the Linksys router. proper ports are open
there
(and
have been for better than a year).
VNC works just fine - no change there. - Just no browsing or email
send/receive.
I do not "control' the server with VNC, just go through to
workstation(s).
Add/remove programs installed an SBC 2003 Hotfix - KB832880 - on
10/28/2007
Nothing else has been updated/added - but, the server was restarted
after
10/31.
--
Howard O. Kieffer
"Merv Porter [SBS-MVP]" wrote:
The timing of this (last week) sounds like the server applied a
security
update "automatically" that broke something.
More questions than answers:
+ Do you have Automatic Updates set to install automatically
(never a
good
idea with a server)?
+ If you re-run CEICW, enable the firewall, select the services
(including
the port for VNC) and finish CEICW, does this fix the problem?
+ Can I ask why you are using VNC to remotely control the server
instead
of
RWW or a straight RDP connection?
+ Are you actually remotely controlling the server or are you
trying
to
access a workstation behind the server?
+ What updates were applied last week (in Add/Remove Programs)?
--
Merv Porter [SBS-MVP]
============================
"Howard O. Kieffer" <HowardOKieffer@xxxxxxxxxxxxxxxxxxxxxxxxx>
wrote
in
message news:285C23A8-3CA3-44A1-B5CF-84DBB8834A4B@xxxxxxxxxxxxxxxx
A strange thing happened. I have SBS Server 2003 SP2. We connect
to
the
internet through a Linksys router. There are two NICs - one for
the
local
network and one for internet access.
I regularly travel and connect to the server through VNC.
This set-up has worked for years.
Then, all of a sudden, last week (while traveling), I can VNC
in -
but
the
server cannot browse the internet or send/receive email through
Exchange
Server.
Upon my return, I rebooted the router, modem (DSL), the server
and
nothing
changed. Locally, I cannot ping out or connect to anything
outside.
I
cannot brouwse the internet and no mail is moving through
Exchange
Server.
From the outside, I can still VNC in (as well as enter through
the
ip
address in a browser) - and (of course) there is a valid IP
connection -
through the router.
What gives? No changes have been made in the router settings or
the
server.
--
Howard O. Kieffer
.
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