odd network behavoir
From: jas0n (no_at_email.here)
Date: 12/04/04
- Next message: Michael Moser: "Enabling offline files fails - absurd error message"
- Previous message: Steve Duff [MVP]: "Re: Non-existant domain to workgroup"
- Messages sorted by: [ date ] [ thread ]
Date: Sat, 4 Dec 2004 20:14:23 -0000
a long one ....
ive a site having odd network behavoir relating to its vpn connection to
head office. its an adsl vpn using a cisco series 800 router.
internet, intranet & email access is via the vpn link to head office.
initially it was fairly intermittant, had clients complaining of outlook
synchronising failing due to network problems (they work offline and
synch with server across the vpn)
also, IE6 wasnt always able to get to its home page which is an intranet
server. internet access via the proxy is also intermittant.
then it pretty much seemed to be all systems on this site, including the
server now have this problem.
heres what ive done so far:-
replaced adsl filter
replaced cables
replaced adsl router
had config for this site removed, redone, confirmed on the main head
office pix
had config scrutinized.confirmed/redone on the adsl router
confirmed line tests with isp are coming back good.
virusscans with uptodate mcafee enterprise 8.0i dats 1dec, none found
spyware, crapware detection on all systems on site, none found
confirmed windows updates for all critical uptodate and all recommended
relevant to the systems.
replaced network switches (was a planned upgrade anyway)
replaced network cables in the rack to get correct length (many were way
too long!)
replaced server network card and network cable.
hosts files on all machines are default with just the 127.0.0.1
localhost entry
the site laptops have cisco vpn software to dial in from home or through
network broadband .... if you use the network broadband option and
establish a vpn with head office everything is ok and internet, intranet
and email flows.
so .... again thinking this is still an issue with head office pix/vpn
concentrator have been through the mill with the guys contracted to look
after it yet they are adamment it is not anything to do with that side
... they also have been logging stuff on the adsl cisco box and come up
blank there.
even when having these issues we can always ping, trace to the head
office side so the vpn is up ... its as though something is blocking web
and mail traffic somewhere but not pings, etc.
anyway, i then installed the cisco vpn software onto desktop machines to
start getting them some access to head office for these services
the weird part .....
once installed, these systems can then access the problem services - we
dont even use the software to connect via vpn, we just install it but
dont run it .... .what gives, what is being replaced that is allowing
access ??????????
- Next message: Michael Moser: "Enabling offline files fails - absurd error message"
- Previous message: Steve Duff [MVP]: "Re: Non-existant domain to workgroup"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
