Easy DHCP & MAC question for those in the know!

TheBigCheese

TheBigCheese

TheBigCheese

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6 Sep 2005
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Hi all

I've just bought an ASUS RT-N66U and haven't got to grips with it yet (noob - eager to learn!), looks amazing though!

Anyway I need to link it up to my credit card machine so I can accept card payments through broadband instead of needing a dedicated phone line.

Two of the critical features I need to answer which I'm not sure of are:

DHCP has to be enabled
MAC filtering has to be disabled

Can anyone in the know just tell me how I can check they are as they should be please.

If I get this wrong I'll bork the credit card machine setup :eek: so I need to get it right...and I need to get it sorted today if possible as merchant services are waiting for me to get back to them...


Anyone any ideas?

Thanks!
 
Sorry to bump, just wondering if anyone has an idea about this - Asus RT-N66U, how do I tell the DHCP and MAC settings?

I've tried on the Asus forums but they keep timing out due to being busy...bonkers!


Thanks! :)
 
"DHCP has to be enabled
MAC filtering has to be disabled"

DHCP (Dynamic Host Configuration Protocol) is what hands out IP Addresses to devices on your network. This should be enabled by default on your router.

MAC filtering (As far as I know) shouldn't affect devices as it allows you to manually blacklist certain MAC Addresses.

For MAC filtering, go to the Firewall Tab, Go to MAC Filtering and select "Reject". Reject basically rejects connections coming from the addresses in the list. If you select "accept" only the addresses in the list will be allowed to access the internet.
 
DHCP should be on from the off (LAN->DHCP Server). AFAIK MAC filtering won't be a problem but its implemented at various different levels for different features in the n66u and I don't know the exact details off the top of my head but again AFAIK the default settings don't do any specific MAC filtering.

I highly reccomend upgrading to the latest Merlin firmware for this router ( http://www.lostrealm.ca/tower/node/79 ) tho obviously update at your own risk - but I found the Merlin FW a lot more stable than the out the box or official 260 releases without having to mess about and potentially brick the router updating to tomato or DDWRT.
 
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Thank you both for your replies.

I think that's the DHCP sorted then.

I think I've found the MAC stuff you both mention regarding filtering, under the same setting LAN - DHCP Server, there is a setting for:

Manually Assigned IP around the DHCP list(list limit:32)
Under that it shows MAC addresses, IP addresses with add/delete and the table is empty.

Would that be that?

chris6273 - there doesn't seem to be mention of MAC in the firewall settings, everything is pretty much set to off, except for the general firewall being enabled.


Thanks for the link Rroff, but I think I'll stick to an out of the box solution until I understand what I'm doing with the router, I'm very green with it at the moment so wouldn't benefit from changing, I have just put the latest firmware on there though...that was painless doing it from the router web page!
 
DHCP is usually on by default, and Mac filtering is usually disabled de default.

Mac filtering refers to the ability to restrict or enable access to the network based on the mac address of the card. Each network card (or NIC) has its own pre determined mac address and you just enter this in the list to enable or diable access depending on the set-up.

The "Manually Assigned IP around the DHCP list" Just means you can make it so a computer will always obtain the same IP address (DHCP) from the router by using its MAC address.

Hope I have explained this in a way that's understandable as I'm confusing myself here.
 
Frosty81 said:
DHCP is usually on by default, and Mac filtering is usually disabled de default.

Mac filtering refers to the ability to restrict or enable access to the network based on the mac address of the card. Each network card (or NIC) has its own pre determined mac address and you just enter this in the list to enable or diable access depending on the set-up.

The "Manually Assigned IP around the DHCP list" Just means you can make it so a computer will always obtain the same IP address (DHCP) from the router by using its MAC address.

Hope I have explained this in a way that's understandable as I'm confusing myself here.
Click to expand...

I was right with you there until you put that last line in and I lost all confidence in the rest of your message! :D
 
The MAC filtering is just odd. You shouldn't need it and certainly not disable it.

As mentioned above, the ASUS comes with DHCP on (which is why you can connect to it without changing your IP address) and any kind of filtering off.
 
By default, DHCP will be enabled and MAC address filtering will be disabled.

What card terminal (make/model) do you have and what acquiring bank (Streamline, HSBC, Lloyds Cardnet, etc) are you with? I work in the Merchant Services industry providing technical support so should be able to help you. :p
 
Thanks for the confirmations folks.

Sparx said:
By default, DHCP will be enabled and MAC address filtering will be disabled.

What card terminal (make/model) do you have and what acquiring bank (Streamline, HSBC, Lloyds Cardnet, etc) are you with? I work in the Merchant Services industry providing technical support so should be able to help you. :p
Click to expand...

Wow, thanks very much!!! :D

It's a Gemalto Magic3 X-8 and it is with Streamline.

You know I've always thought that the OCUK community could form some sort of underground community, we all have skills in so many areas, your post has confirmed it! :D
 
Yeah like 99% of card terminals connecting via IP; as long as DHCP and UPnP is enabled you're good to go. Have you tested if the X8 is working now (if it wasn't in the first place)?

If it doesn't work due to comms issues to your router, check that it can access port 45239. It uses it to connect to Streamline for every transaction for authorisation and when you run the End of Day banking report.

The terminal will also need access to a 2nd port number to Gemalto for monthly updates, but I can't remember the Gemalto update server port number from the top of my head.

I mainly deal with Ingenico terminals nowadays, Gemalto are fairly old terminals. :p
 
Thanks for the detailed reply. :) Sorry I've been a while replying, it's been an utterly crazy day today!

Yep DHCP is on, ummm...not sure about UPnP...any reason why it wouldn't be by default?

It's working fine, it's currently still on the phone line as normal.

OK, again I'm not sure how to open those ports (if I need to) so I'll cross my fingers! It will hopefully be live by the end of next week so I guess I'll see how it goes.

Aye, it is an old machine now...it's pretty chunky! I've had it a few years and haven't been offered an upgrade at all...they'd probably try and push me into another contract if I asked!

It does the job so I can't complain really.

What they don't seem to do which I find a bit weird is just have a wifi terminal...not bluetooth, not mobile, just standard wifi to connect to a router. It doesn't need line of sight like a bluetooth does, it doesn't need a good mobile signal and it's wire free.

Streamline didn't have a clue when I spoke to them about it and 123Send couldn't help when I enquired about terminals there.

Bit rubbish really. :(
 
Aslong as its connecting to those ports on the remote machine then it should just work fine.

If it needs to create a listening server on those ports (which I assume it doesn't) then you have the choice of putting it in the DMZ (WAN->DMZ) tho I wouldn't normally reccomend this or add an entry for it in WAN->Virtual Server / Port Forwarding.

EDIT: Regarding wireless I guess theres the security consideration - properly setup WPA2 AES let alone the professional options shouldn't be a problem but supposedly secure wireless protocols have been broken in the past.
 
TheBigCheese said:
Thanks for the detailed reply. :) Sorry I've been a while replying, it's been an utterly crazy day today!

Yep DHCP is on, ummm...not sure about UPnP...any reason why it wouldn't be by default?

It's working fine, it's currently still on the phone line as normal.

OK, again I'm not sure how to open those ports (if I need to) so I'll cross my fingers! It will hopefully be live by the end of next week so I guess I'll see how it goes.

Aye, it is an old machine now...it's pretty chunky! I've had it a few years and haven't been offered an upgrade at all...they'd probably try and push me into another contract if I asked!

It does the job so I can't complain really.

What they don't seem to do which I find a bit weird is just have a wifi terminal...not bluetooth, not mobile, just standard wifi to connect to a router. It doesn't need line of sight like a bluetooth does, it doesn't need a good mobile signal and it's wire free.

Streamline didn't have a clue when I spoke to them about it and 123Send couldn't help when I enquired about terminals there.

Bit rubbish really. :(
Click to expand...

UPnP is typically enabled by default. The ports don't usually need opening manually either, but you find some Business/Higher-end routers block everything except common ports (80, 443, 21, etc) without some manual configuration.

Streamline now supply Ingenico terminals as standard (we are Streamline's biggest reseller). If you ring them up and just ask for a rate review (presuming you are out of contract) you could not only see if they will lower your monthly rental and transaction charges - you could also mention to the advisor you would like a new terminal as well seeming your current terminal is at EOL and slow. The end result being you get your monthly costs and tranx rates reduced and hopefully a new terminal to.

No manufacturer (except Thyron) have developed a WiFi terminal purely down to security concerns. Most wireless methods can be hacked (I know the argument is people can phone tap also but still) and it is open in the air which Visa/MasterCard do not like. :p

Streamline are just the Helpdesk, if you ask to be put through to Technical they'll transfer you to a 3rd party called NCR who provide all of Streamline's tech support.
 
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