DHCP Configurable options

Listed are the DHCP options configurable in the WinGate DHCP server. Most of these are ignored my most DHCP clients. Please only change options you understand. This section is provided for reference.

Time offset

Specifies the Universal Coordinated Time (UCT) offset in seconds.

Router

Specifies a list of IP addresses for routers on the client’s subnet.

Time server

Specifies a list of IP addresses for time servers available to the client.

Name servers

Specifies a list of IP addresses for name servers available to the client.

DNS servers

Specifies a list of IP addresses for DNS name servers available to the client.

Log servers

Specifies a list of IP addresses for MIT_LCS User Datagram Protocol (UDP) log servers available to the client.*

Cookie servers

Specifies a list of IP addresses for RFC 865 cookie servers available to the client.

RCS Log servers

Specifies a list of IP addresses for RFC 1179 line-printer servers available to the client.

Impress servers

Specifies a list of IP addresses for Imagen Impress servers available to the client.

RLP servers

Specifies a list of RFC 887 Resource Location servers available to the client.

Host name

Specifies the host name of up to 63 characters for the client. The name must start with a letter, end with a letter or digit, and have as interior characters only letters, numbers, and hyphens. The name can be qualified with the local DNS domain name.

Boot file size

Specifies the size of the default boot image file for the client, in 512-octet blocks.

Merit dump file

Specifies the ASCII path name of a file where the client’s core image is dumped if a crash occurs.

Domain name

Specifies the DNS domain name the client should use for DNS host name resolution.

Swap server

Specifies the IP address of the client’s swap server.

Root path

Specifies the ASCII path name for the client’s root disk.

Extensions path

Specifies a file retrievable via TFTP containing information interpreted the same as the vendor-extension field in the BOOTP response, except the file length is unconstrained and references to Tag 18 in the file are ignored.

IP layer forwarding

Enables or disables forwarding of IP packet for this client.

Non-local source routing

Enables or disables forwarding of datagrams with non-local source routes.

Policy filter masks

Specifies policy filters that consist of a list of pairs of IP addresses and masks specifying destination/mask pairs for filtering nonlocal source routes. Any source routed datagram whose next-hop address does not match a filter will be discarded by the client.

Max datagram reassembly size

Specifies the maximum size datagram that the client can reassemble. The minimum value is 576.

Default time-to-live

Specifies the default time-to-live (TTL) that the client uses on outgoing datagrams. The value for the octet is a number between 1 and 255.

All subnets are local

Specifies whether the client assumes that all subnets of the client’s internetwork use the same MTU as the local subnet where the client is connected. 1 indicates that all subnets share the same MTU; 0 indicates that the client should assume some subnets may have smaller MTUs.

Broadcast address

Specifies the broadcast address used on the client’s subnet.

Mask discovery

Specifies whether the client should use Internet Control Message Protocol (ICMP) for subnet mask discovery.

Is Mask supplier

Specifies whether the client should respond to subnet mask requests using ICMP.

Router discovery

Specifies whether the client should solicit routers using the router discovery method in RFC 1256.

Router solicitation address

Specifies the IP address to which the client submits router solicitation requests.

Trailer encapsulation

Specifies whether the client should negotiate use of trailers (RFC 983) when using the ARP protocol.

ARP cache timeout

Specifies the timeout in seconds for ARP cache entries.

Ethernet encapsulation

Specifies whether the client should use Ethernet v. 2 (RFC 894) or IEEE 802.3 (RFC 1042) encapsulation if the interface is Ethernet.

Default time-to-live

Specifies the default TTL the client should use when sending TCP segments. The minimum value of the octet is 1.

Keepalive interval

Specifies the interval in seconds the client TCP should wait before sending a keepalive message on a TCP connection.

Keepalive garbage

Specifies whether the client should send TCP keepalive messages with an octet of garbage data for compatibility with older implementations.

NIS domain name

Specifies the name of Network Information Service (NIS) domain as an ASCII string.

NIS servers

Specifies a list of IP addresses for NIS servers available to the client.*

NTP servers

Specifies a list of IP addresses for Network Time Protocol (NTP) servers available to the client.

WINS/NBNS servers

Specifies a list of IP addresses for NetBIOS name servers (NBNS).

NetBIOS over TCP/IP NBDD

Specifies a list of IP addresses for NetBIOS datagram distribution servers (NBDD).

WINS/Netbt node type

Allows configurable NetBIOS over TCP/IP clients to be configured as described in RFC 1001/1002. Options are b-node, p-node, m-node, and h-node.

NetBIOS scope ID

Specifies a string that is the NetBIOS over TCP/IP Scope ID for the client, as specified in RFC 1001/1002.

X Window font server

Specifies a list of IP addresses for X Window font servers available to the client.

X Window system display

Specifies a list of IP addresses for X Window System Display Manager servers available to the client.