Net intermittently dropping off for a few users

reevey · 30th November 2007, 3:38 PM

Hey guys,

Have a problem with a clients network... Im pretty new to IT. And have asked around with senior techs but they are not much help atm.

Basically they have a network of 20 machines. No firewall.
Couple of different users have no internet for a good 15mins. They can ping the server but cannot ping external IP or hostnames.
Different users and happens 2 times a day most days.

The internet is not on full load also.

Any ideas would be great.

Cheers.

BOB_LORDOFEVIL · 30th November 2007, 3:43 PM

Need a bit more info really

Are they on the same LAN? different VLAN's etc? Is it always around the same time? Any routers? Sounds like NAT may be shitting itself... could be wrong though.

Wuffles · 30th November 2007, 4:40 PM

No firewall?

Franko · 30th November 2007, 6:10 PM

Software firewalls?

evilasdeath · 30th November 2007, 10:09 PM

I wouldn't think that 20 pcs would kill nat, eg using up all available ports on the nat pool.

You say you can ping server but not net, is the server the gateway? Or is there also a router in the network.

Are the 20 pcs on the same vlan network, hanging off the same switch. etc.

Network layout would be an advantage.

And just on a side note, you have been employeed to look after this network but yet goto forums/google to do your job?

BOB_LORDOFEVIL · 1st December 2007, 12:33 AM

Quote:

Originally Posted by evilasdeath

I wouldn't think that 20 pcs would kill nat, eg using up all available ports on the nat pool.

I remember when I used to use a Cisco 2514 back in the day for my router at home... load up uTorrent and bang goes the Internet... those were the days

dan77 · 1st December 2007, 12:44 AM

Do they have a server? - What type?
Are the machines latops?
What o/s is running on all machines?
How is it networked and what h/ware is being used?

30th November 2007, 3:38 PM	#1
reevey Member Join Date: Jul 2004 Location: manly Posts: 236	Net intermittently dropping off for a few users Hey guys, Have a problem with a clients network... Im pretty new to IT. And have asked around with senior techs but they are not much help atm. Basically they have a network of 20 machines. No firewall. Couple of different users have no internet for a good 15mins. They can ping the server but cannot ping external IP or hostnames. Different users and happens 2 times a day most days. The internet is not on full load also. Any ideas would be great. Cheers.

30th November 2007, 3:43 PM	#2
BOB_LORDOFEVIL Member Join Date: Jul 2001 Posts: 1,278	Need a bit more info really Are they on the same LAN? different VLAN's etc? Is it always around the same time? Any routers? Sounds like NAT may be shitting itself... could be wrong though. __________________ And the man in the rain picked up his bag of secrets, and journeyed up the mountainside, far above the clouds, and nothing was ever heard from him again, except for the sound of Tubular Bells.

30th November 2007, 4:40 PM	#3
Wuffles Member Join Date: Apr 2004 Location: Canberra Posts: 121	No firewall?

30th November 2007, 6:10 PM	#4
Franko Member Join Date: Nov 2004 Location: Fremantle, Perth WA Posts: 833	Software firewalls?

30th November 2007, 10:09 PM	#5
evilasdeath Member Join Date: Jul 2004 Posts: 2,867	I wouldn't think that 20 pcs would kill nat, eg using up all available ports on the nat pool. You say you can ping server but not net, is the server the gateway? Or is there also a router in the network. Are the 20 pcs on the same vlan network, hanging off the same switch. etc. Network layout would be an advantage. And just on a side note, you have been employeed to look after this network but yet goto forums/google to do your job?

1st December 2007, 12:44 AM	#7
dan77 Member Join Date: Oct 2002 Location: Central Victoria Posts: 1,027	Do they have a server? - What type? Are the machines latops? What o/s is running on all machines? How is it networked and what h/ware is being used?