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MAC ADDRES Blocked By SOPHOS

islam zidane over 3 years ago

Hi ,

We have a XG 135 firewall , im seeing blocked DHCP requests In port 67 and 68 the error like Appliance Denied .

Sow how to allow in Sophos to get a ip address from a DHCP , in my case i have one MAC address blocked .

How can be solved ???

Thanks and Best Regards

ZIDANE ISLAM

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0 rfcat_vk over 3 years ago

Hi,

please check the logviewer system tab, you might find that there are a number of failures and one successful. On my many XGs I have built and used I always see rejected DHCP requests, bu the device making the request does eventually revenue an IP address.

Ian
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0 islam zidane over 3 years ago in reply to rfcat_vk

Hi ,

thank you for your replay ,

but in my case there are no successful to get ip address , all the request are failing

i don't have any rules to bloque the MAC address .

Thank you

Best Regards
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0 rfcat_vk over 3 years ago in reply to islam zidane

Check the number of addresses is not exceeding the size of your dhcp allocation.Ian
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0 islam zidane over 3 years ago in reply to rfcat_vk

no the number of address in not exceending the size in my DHCP server .

In the same laptop when i try to connect with WIFI he get the ip address normaly but when i connect with the Ethernet .

he don't get ip from the DHCP the request is deined by SOPHOS .

when i search in logveiwer i get only the MAC address of the EThernet was rejected by sophos ( Appliance access ) .

thank you
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0 islam zidane over 3 years ago in reply to rfcat_vk

no the number of address in not exceending the size in my DHCP server .

In the same laptop when i try to connect with WIFI he get the ip address normaly but when i connect with the Ethernet .

he don't get ip from the DHCP the request is deined by SOPHOS .

when i search in logveiwer i get only the MAC address of the EThernet was rejected by sophos ( Appliance access ) .

thank you
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0 rfcat_vk over 3 years ago in reply to islam zidane

Hi,

what is connected between your PC and the XG? If it is a switch, try reseting it.

Ian
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0 islam zidane over 3 years ago in reply to rfcat_vk

Yes , i Have a Switch between the PC and the Firewall , i will try to reboot it .
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0 islam zidane over 3 years ago in reply to islam zidane

I reboot the Switch but nothing has happened , the firewall keeps to bloc the MAC address .
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0 rfcat_vk over 3 years ago in reply to islam zidane

Hi,

looking at the error message, which did not display well on my screen previously, you appear to have a fixed temporary IP address, the IP address which sends the request should be 0.0.0.0. It is not the MAC address that is being rejected but the but the 169.254.x.x address that is being rejected. You either need to check the configuration of the device or reboot it to refresh the address especially if it is windows device. Windows devices do not automatically refresh their IP address.

Ian
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