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is the ASA running NAT, or in transparent mode ?
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is the ASA running NAT, or in transparent mode ?

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Wonder if you have dhcp relay for asa...instead of ip helper address to simplify<br />
<a href="http://www.packetu.com/2012/03/27/ip-helper-address-on-the-asa/" rel="ugc">http://www.packetu.com/2012/03/27/ip-helper-address-on-the-asa/</a>
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Wonder if you have dhcp relay for asa...instead of ip helper address to simplify
http://www.packetu.com/2012/03/27/ip-helper-address-on-the-asa/ [http://www.packetu.com/2012/03/27/ip-helper-address-on-the-asa/]

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Can you post a network diagram with the various IP subnets and the firewall configs?
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Can you post a network diagram with the various IP subnets and the firewall configs?

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As it turns out the origional configuration was correct but old information must have been held somewhere in the network, or something like that which resolved itself with time. &nbsp;The problem resolved itself after a few hours had passed.
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As it turns out the origional configuration was correct but old information must have been held somewhere in the network, or something like that which resolved itself with time.  The problem resolved itself after a few hours had passed.

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I have 3 networks with an ASA firewall between them and my main network. &nbsp;One of these is just for routing and contains an interface on the firewall, the other 2 are client networks which route through that network. &nbsp;My dhcp server is on the main network on the other side of the firewall from the 2 client networks. &nbsp;I am using IP helper-Address commands on cisco layer 3 switches pointing to my DHCP server and then rules allowing port 67 and 68 through the firewall to the server. &nbsp;I see hits on the rules but do not get an address. &nbsp;The scope worked before I added the firewall.
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I have 3 networks with an ASA firewall between them and my main network.  One of these is just for routing and contains an interface on the firewall, the other 2 are client networks which route through that network.  My dhcp server is on the main network on the other side of the firewall from the 2 client networks.  I am using IP helper-Address commands on cisco layer 3 switches pointing to my DHCP server and then rules allowing port 67 and 68 through the firewall to the server.  I see hits on the rules but do not get an address.  The scope worked before I added the firewall.

Dhcp Issue Relay through ASA Firewall

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.