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Lee said:My router is connected via WAN port by cable to the modem. The modem setup
offers DHCP should I enable that as well as on the router or just one of
them?
My router is connected via WAN port by cable to the modem. The modem setup
offers DHCP should I enable that as well as on the router or just one of
them?
James Egan said:Only one dhcp server.
The "modem" sounds like a bit more than just a modem if it offers a
dhcp service.
Does the router negotiate a connection with your ISP or does the
"modem" do that? If the router hasn't made the connection, it won't
know the necessary configuration information regarding nameservers.
You need to post some more details.
Jim.
The modem is a Dlink 300T the router is a Dlink 624+ The modem negotiates
with the isp and is connected to the WAN port on the router which shows the
isp IP details in its WAN status report. Dlink say that I should have the
modem IP details there. DLink don't seem to give any instructions on the
dhcp service of the modem and the way they suggest the two should be
configured together doesn't work for me. At the moment I have the the modem
dhcp enabled as well as the router. This seems to work and I have ics
working on my three computerers . IP addresses on the LAN come from the
router not the modem
James Egan said:Keep the dhcp enabled on both the modem and the router.
Uninstall ics on *all* the computers. It is not required because the
router will be doing the necessary sharing.
Jim.
OK, I'll do that, thanks. Can you tell me if I should have firewalls and AV
running on all the connected computers?
(2 are XP and one is a laptop on
W98) .So far I have not enabled the firewall in the router itself since I
am not sure I understand its functions. It seems to just control IP
addresses in and out.
Thanks for your help. Much appreciated.James Egan said:AV yes. Firewalls (in the traditional sense) no, since the router
(whether its own firewall is enabled or not) will be translating the
public ip address to the private ip addresses of your computers so
there will be no connections from outside of the network anyway unless
you specifically configure the router to do so.
Having said that, modern firewalls like zonealarm also alert on
outgoing connection requests as well as incoming and so give you some
sort of protection against trojans or spyware programs you didn't know
were sending out information from your network.
The value of that is a matter of personal opinion. It will be using
resources blocking something which is already blocked and misfiring
firewalls are the root cause of many network problems posted about
here. Also be aware that it can't alert you to *all* outgoing
connection attempts because any (half-decently written) program will
already be loaded into memory and running and as such could easily
close down from within the firewall or av program which could cause it
to be detected. Usually, a simple WM_DESTROY signal to the firewall or
av process and it's gone silently.
The network address translation is a sort of firewall in itself but
the additional firewall functions could become useful if you (say)
were port forwarding connections from the router to a server on your
network and wanted to restrict the range of ip addresses from the
Internet which were allowed to connect to it.
Jim.
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