Lynksys Router requires MAC address

I have a new iPhone and want to connect to my home wi-fi network. I require a MAC address to be put into the Lynksis to allow connection to my network. How can I get the MAC address for my iPhone?

Where do you enter the Mac address in the router?

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Arp aging time on router and mac address aging time on switches set close t

Hi,
appreciate some advice on the following:
what is the benefit of setting arp aging time on router and mac address aging time on switches close to each other?
Thanks,
Christina

Hi,
based on the below output, do you think implementing it will benefit? Thanks.
C2950#sh int fa0/43
FastEthernet0/43 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 000d.5e11.4e2b (bia 000d.5e11.4e2b)
MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec,
reliability 255/255, txload 7/255, rxload 2/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 933000 bits/sec, 149 packets/sec
5 minute output rate 2981000 bits/sec, 263 packets/sec
2819781393 packets input, 3782332886 bytes, 0 no buffer
Received 266693 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
4015025747 packets output, 2328228393 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
C2950#

SG300 inter-VLAN routing and MAC address changes in incoming packets

Hello
I have SG300-20 working in Layer3 mode
VLAN1 is not used
Internet gateway is in VLAN211
Clients are in other VLANs
Switch is default gateway for clients and itself has internet gateway as default route.
MAC address of switch is XX:XX:XX:XX:XX:63
When client sends trafic to Internet destination MAC address in outgoing packets is XX:XX:XX:XX:XX:63
But in incoming packets source MAC address is XX:XX:XX:XX:XX:69
Why does it change? And how can I setup switch to use only XX:XX:XX:XX:XX:63 MAC address?

Hi Robert,
I'd like to pick up this old thread because we have a huge problem with the behavior of the SG300 router/switch regarding the "spoofed" MAC source addresses. We have connected this switch to another router which has some special routing capabilities. It routes certain IP packets directly to MAC addresses which it learned from snooping on special traffic.
When connected to a SG300 router with an Ethernet base address of XX:XX:XX:XX:XX:48 we receive packets with Ethernet source addresses like e. g. XX:XX:XX:XX:XX:49 or XX:XX:XX:XX:XX:4D (depending on which hardware port they came from). Our special router "learns" these MAC addresses and tries to send associated outgoing packets directly to these addresses using e. g. XX:XX:XX:XX:XX:49 as the MAC destination address.
Our problem is that the SG300 does not forward the packet if the MAC destination address is not equal to the switch's Ethernet base address (XX:XX:XX:XX:XX:48 in our case). This renders the SG300 series useless for our systems.
Is there new firmware available which fixes this problem for us? We don't care which MAC source address the SG300 uses in incoming packets we receive, but we expect that the SG300 handles packets correctly for outgoing packets we send with this MAC address as the destination address.
Thanks,
Chris

WRT160N V3 router ignores MAC address Access Restrictions, Filtering policies

I have added a list of 2 MAC addresses in the Access Restrictions for the access policy #1 and enabled it with Allow policy. But one of my PC's MAC address which is not on the list of access policy #1 still can access the internet and ping websites. I tried to add a Deny policy in 2nd policy for this PC MAC address and then it can not ping websites anymore.
The problem is why my PC with a MAC address not on the list of Allow Policy #1 can access the internet? It seems the router Access Restrictions don't work well.

I've already added Deny rule (blocking all LAN IPs) to all computers accessing my network in Access Restrictions Policy #1 but I leave one PC left to access the router web configuration.
Then in Acess Restrictions Policy #2, I added an Allow rule to one of my PC's MAC addresses (and its IP too) but the PC can not access internet and ping websites. It looks like the allow rule in policy #2 doesn't overwrite the Deny rule in Policy #1.

Help required - mac address table, virtual pc/ip addressing issue

Hi, hope someone out there can help?
This is the scenario
SW1 (WS-C2960G-48TC-L) port gig0/1 has a PC connected to it with ip address 10.182.8.6 and a Virtual IP address 10.182.8.107
SW2 (WS-C2960-24TT-L) port gig 0/1 has a PC connected to it with ip address 10.182.8.106
The system is designed so that if there is an issue with the PC connected to SW1, the PC on SW2 will take over the Virtual IP address and continue working.
We have a couple of other PC's in different subnets to the above PC's that use the Virtual IP (VIP) address to communicate with the PC that is 'on line'.
Unfortunately, the vendors software doesn't currently gratuitously refresh the arp to advertise the change of mac address for the VIP.
Is there anyway we can get the 2 dcnsw to 'refresh' on a regular time period to capture when the VIP changes to the other PC?

Hi Stephen
Without meaning to sound rude, the software which uses a VIP is not very well designed if it is not capable of sending a Gratuitous ARP one the Active one fails.
The default ARP cache timeout is 4 hours so an ARP entry will remain in the table and once the timeout is up, the switch will send an ARP to check if the device is still alive and if not, remove the entry from the table.
You could look at reducing the ARP timeout on a per port basis:
#interface gi1/0/1
#arp timeout 60
This will change the ARP cache timeout to 60 seconds for that port but having not used this before, I am not 100% this will address your issue. I would not advise trying to change the global ARP cache timeout for a production switch as this will increase ARP traffic and could cause problems if reduced to a small value.

I have a Linksys WRT54G wireless router that has a MAC address

A month ago, I could print from my PC and my Mac to my Epson printer over my Linksys WRT54G wireless network. Now, for some reason, I cannot connect and print from either computer. An Epson tech asked me to check the MAC address of the Mac and the printer to see if they were the same. They were not. He then opined that might be why I couldn't print.
I don't know what changed a month or so ago or why it changed. I have not done anything to change the MAC address on either the MAC or the printer.
The Epson guy said the problem might be fixed by adding my printer's MAC address to my router's MAC address. Something about "enabling MAC address filtering". Then he told me that was an issue to pursue with my router manufacturer. Naturally.
Speaking of that problem...someone else had it, too...another technician at another site wrote: "...by default, routers don't come with mac address filtering enabled...and if that's the case....then adding the printer's MAC will not solve any issue that you may be having..."
So, three qustions:
(1) Can I add my Epson Workforce 545 printer's MAC address to my Linksys router? Is that possible?
(2) If I can do it, how do I do it? I saw no "add" or "edit" functions on the Linksys WRT54G Status Page.
(3) What causes MAC address mismatching to happen? What is unstable in that assembly?
Solved!
Go to Solution.

Mac addresses with different devices will differ. No two devices will have the same mac address. this is also called the hardware address. This is designed so that it will serve as a unique identifier of your devices in the network which you can check thru the router. Now it is possible that wireless mac filter might be blocking it from connecting to the network. But it would be best to check as well and make sure that the printer is connected to your network and has the same ip address segment as your router.
How to check if mac filter is enabled:
Setting up wireless MAC Filtering to permit users to connect to the wireless network on your Linksys...
Setting up wireless MAC Filtering to prevent users from connecting to the wireless network on your L...

MAC address and router access control

My iPhone 3GS can only access the network (through my Netgear KWGR614 wireless router) when the router's MAC address access control is off. When I turn it on the phone is blocked. The MAC address I use is taken from the iPhone settings. It begins with 64. All other MAC addresses I have ever seen begins with 00. Is this MAC address correct? If it is right, could it be that the router can't handle this address?

The first 3 bytes of the mac address identifies the manufacturer. For example, mine starts with 04:1e:64 which is Apple
04-1E-64 (hex) Apple, Inc
041E64 (base 16) Apple, Inc
1 Infinite Loop
Cupertino CA 95014
UNITED STATES
. if it starts with 64 then it belongs to
64-4F-74 (hex) LENUS Co., Ltd.
644F74 (base 16) LENUS Co., Ltd.
18-5 Gwacheon-Dong
Gwacheon Gyeonggi-Do 427-060
KOREA, REPUBLIC OF
check this list : http://standards.ieee.org/regauth/oui/index.shtml
enter your first 3 numbers (first 3 pairs) from your wifi (settings/general/about) (don't use colons in the search)
Not sure about the router as I never tried mac filtering. Each router will behave differently.
Hope this helps.

How do I restrict access to Wireless router (800 series) by mac address

I hope I'm in the correct area.
I'm trying to deny access to 3 wireless devices to the cisco 800 series wireless router
The MAC address are:
MAC Address    IP address      Device        Name            Parent         State
0014.6caf.410a 192.168.2.26    unknown       -               self           Assoc
9803.d8ba.cd42 192.168.2.41    unknown       -               self           Assoc
a4d1.d205.72e1 192.168.2.25    unknown
If this cannot be done is it poosible to assign the mac address to an ip address and then denying access to the ip address.
Thanks
Jon

Hello Jon,
You should be able to do it either way. Best way would be by IP address so you do not even allow the host to associate with your AP.
Looking for some Networking Assistance?
Contact me directly at [email protected]
I will fix your problem ASAP.
Cheers,
Julio Carvajal Segura
http://laguiadelnetworking.com

Router seems to several MAC addresses

My WRT54G wireless router's MAC address (as written on the label underneath) ends with F5. LELA shows the LAN MAC address as ending in F5. It shows the WAN MAC addrerss as ending in F6. My ISP used the F6 to connect me to their network. I have a wireless internet radio which detects the router as ending in F7.
Why is this? How do I know which is the "real" MAC address?
Solved!
Go to Solution.

kevj is right, Your linksys router has 3 MAC address and they all are assocciated with each other.

I need to change the MAC Address for Airport on MacBook

I have a specific need to change my son's Airport MAC address as his school requires the use of USB network cards that aren't compatible with MACs. These cards are needed because the school's router uses MAC address filtering.
Before we upgraded his Mac to Snow Leopard, we were able to change the MAC address to the MAC address of the useless dongal the school supplied. We basically created an AppleScript program that ran the "sudo ifconfig en1 ether xx:xx:xx:xx:xx:xx" and all was good.
This command no longer works for changing the MAC address. We tried it as root user as well and by typing it into the terminal window as root. After running the command, we can run "ifconfig en1" and it does display the new mac address but when we turn the airport on and try to connect, it just hangs and won't connect.
Our other non-Snow Leopard still works fine after running the commands so I'm guessing Apple disabled this functionality. It's hardly a security issue by being able to change your mac addres.
Is there a new way to accomplish this? I've searched everywhere.
Thanks!

Would an easier solution be to provide the school's IT admin with your mac address and have it added? If they can add a block of mac addresses for the usb dongles, they can add more for machines that cannot use the dongle.
Also: "It's hardly a security issue by being able to change your mac address."
While it may not be a security issue for your machine, it is a security for the school network who is using mac address filtering as hopefully only one part of their wireless security.
That being said, have you read this?
http://osxdaily.com/2008/01/17/how-to-spoof-your-mac-address-in-mac-os-x/

Changing MAC Address

Recently i have been trying to change my Router's MAC Address. I have a WRT54g v.3. I have done it before where i had unplugged the internet cable going from the wall to the modem. I saw the change on the 192.168.1.1 status page. And i noticed with a proxy and the new changed MAC address i was able to get into gaming servers i hadn't been able to before because my IP was banned.
Now when i try to change my MAC address, it doesn't seem to change on the router stautus page like it did once before. I'm sure that it's possible to concel my identity of my old IP and get a new IP (through a proxy), many people do this for security reasons so i'm hoping linksys products can offer some kind of security by doing this.
btw, sorry about the name, if it's possible can it be changed to Joe. Thanks guys.

Your MAC is "stuck" to that router, you need to spoof it. Google it.

Airport MAC address not set at factory?

I just received my new MacBook Pro and was getting ready to set my router so that DHCP requests from the new Macbook Pro would receive the same IP address on my home LAN.
The IP address for the Airport in my new machine is: 00:11:22:33:44:55 as determined by the following terminal command.
macbookpro:~ pderby$ ifconfig en1 | grep ether
ether 00:11:22:33:44:55
I tried to "spoof" the address with this command:
sudo ifconfig en1 lladdr 00:19:e3:d8:f5:07
which does not throw an error, but does not work.
Anyone else get a MacBook Pro where the MAC address for the airport was not set?
Any ideas on what to do?
I suppose I can just tell my router the MAC address is 00:11:22:33:44:55

Of course the MAC address and the IP address are two different things. I'm not sure why, Kappy, you thought I had this confusion. And I beg to differ, but MAC addresses are by interface, not by machine. So the ethernet port has a different MAC address than the Airport. They HAVE to have different MAC addresses or using two IP connections at the same time will not work when both ports are active at the same time and have the same MAC address. Using both ports at the same time with two independent IP addresses is completely supported by BSD Unix as well as OS X.
On my new machine the Ethernet Port EN0, has the MAC address 00:23:32:c8:27:4a
On my new machine the Airport Port, EN1, has the MAC address 00:11:22:33:44:55
I've had a lot of Macs, and this is the first time I've had an airport with this "default" MAC address.
My question is 1) does anyone else have a MAC address of 00:11:22:33:44:55 on their new MacBook Pro for the Airport hardware? If so, is this correct? Usually the MAC address has a manufacturer's Id embedded followed by a unique ID. 2) If someone is in the same situation have you talked to Apple about this? What did they have to say?
I can spoof the MAC address temporarily via the terminal, but it will reset to the hardware address on reboot.
Message was edited by: Paul Derby

WRT160N mac address to use for dhcp reservation

I have to reserve this one router's MAC address in the main router for the building. Both routers in question are WRT160Ns. The router I have to reserve's MAC address ends in 5A (on the bottom of the router, and in the ARP table when connected via wifi), but it's 5B that is listed in the DHCP resrvation table for the main router. Why is this? What should I do? I am trying to reserve it in order to keep the nettalk voIP adaptor connected to the network.

How about if you access the setup page of the 2nd router then go to the status and check the local mac address under the local network subtab. From there you will be able to compare if you have the right mac address.

Treo 700wx MAC Address

Can someone tell me how to find the MAC Address on the Treo 700wx.
TIA
Post relates to: Treo 700wx (Verizon)

I am trying to use WiFi - connect to My home WiFi network which is setup to require MAC addresses. Am using a Spectec WLAN - 11b/g SDIO LAN Card. I have connected when I cancelled the MAC Address requirement, but that is a pain and is impractical if I try to connect to another home network that requires MAC Address registration.
Post relates to: Treo 700wx (Verizon)

Unable to read MAC address of router at login

I'm using the following bash function to get the MAC address of the current router when logging in. The script works when I run it after logging in but doesn't work from my login hook (running as root). The script fails even after sleeping for 30 seconds prior to running. I know the interface is up because my mail client is finished checking mail by the time the script pings the router runs the arp command. I could run it as a cron job, but I'd like to understand why it fails during login.
<pre style="border: 1px solid #ddd; padding-left: .75ex; padding-top: .25em; padding-bottom: .25em; margin-top: .5em; margin-bottom: .5em; margin-left: 1ex; max-width: 80ex; overflow: auto; font-size: 10px; font-family: Monaco, 'Courier New', Courier, monospace; color: #444; background: #eee; line-height: normal">get_route_mac() {
ip=$(netstat -nrfinet | awk '/^default/{print $2; exit}')
[[ "$ip" = *.*.*.* ]] || return 1
[ ${1:-0} -gt 0 ] && ping -nc$1 $ip 2>&1 >/dev/null
arp -n $ip | sed -n 's/.* at $.*:.*:.*:.*:.*:.*$ on .*/\1/p'
</pre>
The idea is to do certain things when joining different networks. Especially when connected to an unknown network (stolen laptop recovery). I would like to support 10.3.9, so I'm avoiding launchd for now.

PWD=/
SHLVL=1
SECURITYSESSIONID=ceb19270
_=/usr/bin/printenv
uid=0(root) gid=0(wheel) groups=0(wheel)
The script works much better when it can find the required programs. :0)
which netstat awk ping arp sed
/usr/sbin/netstat
/usr/local/bin/awk
/sbin/ping
/usr/sbin/arp
/usr/bin/sed
<pre style="border: 1px solid #ddd; padding-left: .75ex; padding-top: .25em; padding-bottom: .25em; margin-top: .5em; margin-bottom: .5em; margin-left: 1ex; max-width: 80ex; overflow: auto; font-size: 10px; font-family: Monaco, 'Courier New', Courier, monospace; color: #444; background: #eee; line-height: normal">get_route_mac() {
ip=$(/usr/sbin/netstat -nrfinet | /usr/local/bin/awk '/^default/{print $2; exit}')
[[ "$ip" = *.*.*.* ]] || return 1
[ ${1:-0} -gt 0 ] && /sbin/ping -nc$1 $ip 2>&1 >/dev/null
/usr/sbin/arp -n $ip | /usr/bin/sed -n 's/.* at (.*:.*:.*:.*:.*:.*) on .*/ /p'
}</pre>
Thanks for your help, Bob!

Lynksys Router requires MAC address

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