DHCP client table question

Hi-I just hooked up my desktop and laptop to a linksys wireless
router. My desktop is cabled into the router and my notebook has a
wireless card. I was told I could check to see if a neighbor was using
my wireless internet access by checking the DHCP Client Table in the
linksys setup--here is what I see:

miltonhome 192.168.1.100 00-0A-E5-21-EB-87 Ethernet(this is
desktop--cabled to router)


MiltonNotebook 192.168.1.102 00-04-43-96-CA-67 Wireless(this is the
laptop with wireless card)

Then I see this--there is no name, just this address

192.168.1.103 00-30-65-2C-A3-4D Wireless

I checked the mac address in the laptop--it matches the entry for
Miltonnotebook in the DHCP client tablet. I thought computers always
had to have some kind of name-I've been told that the third entry
could be my cordless phone-is that possible or is it someones's PC?
Thanks--sort of new at this

It's probably someone else. Try running "ipconfig /all" on both computers
in a command prompt. This will display all hardware addresses that could be
attributed to your computer. Then, at a minimum, turn on 128-bit WEP for
your router. The key you generate and use will also need to be copied to
your wireless card. If your router and wireless card support it, you should
use WPA instead of WEP.

-Yves

"milton" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Hi-I just hooked up my desktop and laptop to a linksys wireless
> router. My desktop is cabled into the router and my notebook has a
> wireless card. I was told I could check to see if a neighbor was using
> my wireless internet access by checking the DHCP Client Table in the
> linksys setup--here is what I see:
>
> miltonhome 192.168.1.100 00-0A-E5-21-EB-87 Ethernet(this is
> desktop--cabled to router)
>
>
> MiltonNotebook 192.168.1.102 00-04-43-96-CA-67 Wireless(this is the
> laptop with wireless card)
>
> Then I see this--there is no name, just this address
>
> 192.168.1.103 00-30-65-2C-A3-4D Wireless
>
> I checked the mac address in the laptop--it matches the entry for
> Miltonnotebook in the DHCP client tablet. I thought computers always
> had to have some kind of name-I've been told that the third entry
> could be my cordless phone-is that possible or is it someones's PC?
> Thanks--sort of new at this

Disable DHCP and set the IP address for your two computers.

"milton" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Hi-I just hooked up my desktop and laptop to a linksys wireless
> router. My desktop is cabled into the router and my notebook has a
> wireless card. I was told I could check to see if a neighbor was using
> my wireless internet access by checking the DHCP Client Table in the
> linksys setup--here is what I see:
>
> miltonhome 192.168.1.100 00-0A-E5-21-EB-87 Ethernet(this is
> desktop--cabled to router)
>
>
> MiltonNotebook 192.168.1.102 00-04-43-96-CA-67 Wireless(this is the
> laptop with wireless card)
>
> Then I see this--there is no name, just this address
>
> 192.168.1.103 00-30-65-2C-A3-4D Wireless
>
> I checked the mac address in the laptop--it matches the entry for
> Miltonnotebook in the DHCP client tablet. I thought computers always
> had to have some kind of name-I've been told that the third entry
> could be my cordless phone-is that possible or is it someones's PC?
> Thanks--sort of new at this

You can set DHCP to only issue two IP(s).

You can disable DHCP and use Static IP(s) on the router.

Use a sophisticated SSID and change it on a routine basis.

Don't broadcast the SSID.

You can use MAC filtering and block the NIC's MAC from accessing the
Internet.

You can use a host based firewall on your machines to reject other IP(s) on
your network issued by or used on the router that are not being used by you
so that your machines are not compromised.

Duane

"Yves Konigshofer" <(E-Mail Removed)> wrote in message
news:bs3813$cq3$(E-Mail Removed)...
> It's probably someone else. Try running "ipconfig /all" on both computers
> in a command prompt. This will display all hardware addresses that could
be
> attributed to your computer. Then, at a minimum, turn on 128-bit WEP for
> your router. The key you generate and use will also need to be copied to
> your wireless card. If your router and wireless card support it, you
should
> use WPA instead of WEP.
>
> -Yves
>
> "milton" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) om...
> > Hi-I just hooked up my desktop and laptop to a linksys wireless
> > router. My desktop is cabled into the router and my notebook has a
> > wireless card. I was told I could check to see if a neighbor was using
> > my wireless internet access by checking the DHCP Client Table in the
> > linksys setup--here is what I see:
> >
> > miltonhome 192.168.1.100 00-0A-E5-21-EB-87 Ethernet(this is
> > desktop--cabled to router)
> >
> >
> > MiltonNotebook 192.168.1.102 00-04-43-96-CA-67 Wireless(this is the
> > laptop with wireless card)
> >
> > Then I see this--there is no name, just this address
> >
> > 192.168.1.103 00-30-65-2C-A3-4D Wireless
> >
> > I checked the mac address in the laptop--it matches the entry for
> > Miltonnotebook in the DHCP client tablet. I thought computers always
> > had to have some kind of name-I've been told that the third entry
> > could be my cordless phone-is that possible or is it someones's PC?
> > Thanks--sort of new at this
>
>

"Duane Arnold" <(E-Mail Removed)> wrote in message news:<zIpFb.108487$8y1.332359@attbi_s52>...
> You can set DHCP to only issue two IP(s).
>
> You can disable DHCP and use Static IP(s) on the router.
>
> Use a sophisticated SSID and change it on a routine basis.
>
> Don't broadcast the SSID.
>
> You can use MAC filtering and block the NIC's MAC from accessing the
> Internet.
>
> You can use a host based firewall on your machines to reject other IP(s) on
> your network issued by or used on the router that are not being used by you
> so that your machines are not compromised.
>
> Duane
>
> "Yves Konigshofer" <(E-Mail Removed)> wrote in message
> news:bs3813$cq3$(E-Mail Removed)...
> > It's probably someone else. Try running "ipconfig /all" on both computers
> > in a command prompt. This will display all hardware addresses that could
> be
> > attributed to your computer. Then, at a minimum, turn on 128-bit WEP for
> > your router. The key you generate and use will also need to be copied to
> > your wireless card. If your router and wireless card support it, you
> should
> > use WPA instead of WEP.
> >
> > -Yves
> >
> > "milton" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed) om...
> > > Hi-I just hooked up my desktop and laptop to a linksys wireless
> > > router. My desktop is cabled into the router and my notebook has a
> > > wireless card. I was told I could check to see if a neighbor was using
> > > my wireless internet access by checking the DHCP Client Table in the
> > > linksys setup--here is what I see:
> > >
> > > miltonhome 192.168.1.100 00-0A-E5-21-EB-87 Ethernet(this is
> > > desktop--cabled to router)
> > >
> > >
> > > MiltonNotebook 192.168.1.102 00-04-43-96-CA-67 Wireless(this is the
> > > laptop with wireless card)
> > >
> > > Then I see this--there is no name, just this address
> > >
> > > 192.168.1.103 00-30-65-2C-A3-4D Wireless
> > >
> > > I checked the mac address in the laptop--it matches the entry for
> > > Miltonnotebook in the DHCP client tablet. I thought computers always
> > > had to have some kind of name-I've been told that the third entry
> > > could be my cordless phone-is that possible or is it someones's PC?
> > > Thanks--sort of new at this
> >
> >
Just want to thank everyone--I disabled ssid broadcast and set mac
filtering to include only my PC's and the intruder is gone-thanks
again