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Hi guys and thanks to anyone who can give me some insight here.<br />
<br />
I have someone on my internal network who tried to access my firewall multiple times with different usernames. &nbsp;It looks like it was about a week ago and the dhcp lease has expired. &nbsp;I have the ip address, but no computer name. &nbsp;Is there a way to find this in dhcp logs? Been looking all over with no luck.<br />
<br />
Thanks again all
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Hi guys and thanks to anyone who can give me some insight here.

I have someone on my internal network who tried to access my firewall multiple times with different usernames.  It looks like it was about a week ago and the dhcp lease has expired.  I have the ip address, but no computer name.  Is there a way to find this in dhcp logs? Been looking all over with no luck.

Thanks again all

View old DHCP lease information

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).

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