CAD-AR750
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DHCP and DNS
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DHCP and DNS
Dnsmasq is a combined
DHCP
-Server and
DNS
-Forwarder for
NAT
firewalls
Server Settings
General Settings
Resolv and Hosts Files
TFTP Settings
Advanced Settings
Use
/etc/ethers
Read
/etc/ethers
to configure the
DHCP
-Server
Leasefile
file where given
DHCP
-leases will be stored
Ignore resolve file
Resolve file
local
DNS
file
Ignore
/etc/hosts
Additional Hosts files
Enable TFTP server
TFTP server root
Root directory for files served via TFTP
Network boot image
Filename of the boot image advertised to clients
Domain required
Don't forward
DNS
-Requests without
DNS
-Name
Authoritative
This is the only
DHCP
in the local network
Local server
Local domain specification. Names matching this domain are never forwarded and are resolved from DHCP or hosts files only
Local domain
Local domain suffix appended to DHCP names and hosts file entries
Log queries
Write received DNS requests to syslog
DNS forwardings
List of
DNS
servers to forward requests to
Rebind protection
Discard upstream RFC1918 responses
Allow localhost
Allow upstream responses in the 127.0.0.0/8 range, e.g. for RBL services
Domain whitelist
List of domains to allow RFC1918 responses for
Local Service Only
Limit DNS service to subnets interfaces on which we are serving DNS.
Non-wildcard
Bind only to specific interfaces rather than wildcard address.
Listen Interfaces
Limit listening to these interfaces, and loopback.
Exclude interfaces
Prevent listening on these interfaces.
Suppress logging
Suppress logging of the routine operation of these protocols
Allocate IP sequentially
Allocate IP addresses sequentially, starting from the lowest available address
Filter private
Do not forward reverse lookups for local networks
Filter useless
Do not forward requests that cannot be answered by public name servers
Localise queries
Localise hostname depending on the requesting subnet if multiple IPs are available
DNSSEC
DNSSEC check unsigned
Requires upstream supports DNSSEC; verify unsigned domain responses really come from unsigned domains
Expand hosts
Add local domain suffix to names served from hosts files
No negative cache
Do not cache negative replies, e.g. for not existing domains
Additional servers file
This file may contain lines like 'server=/domain/1.2.3.4' or 'server=1.2.3.4' fordomain-specific or full upstream
DNS
servers.
Strict order
DNS
servers will be queried in the order of the resolvfile
All Servers
Query all available upstream
DNS
servers
Bogus NX Domain Override
List of hosts that supply bogus NX domain results
DNS
server port
Listening port for inbound DNS queries
DNS
query port
Fixed source port for outbound DNS queries
Max.
DHCP
leases
Maximum allowed number of active DHCP leases
Max.
EDNS0
packet size
Maximum allowed size of EDNS.0 UDP packets
Max.
concurrent queries
Maximum allowed number of concurrent DNS queries
Size of DNS query cache
Number of cached DNS entries (max is 10000, 0 is no caching)
Active DHCP Leases
Hostname
IPv4-Address
MAC-Address
Leasetime remaining
Collecting data...
Active DHCPv6 Leases
Host
IPv6-Address
DUID
Leasetime remaining
Collecting data...
Static Leases
Static leases are used to assign fixed IP addresses and symbolic hostnames to DHCP clients. They are also required for non-dynamic interface configurations where only hosts with a corresponding lease are served.
Use the
Add
Button to add a new lease entry. The
MAC-Address
identifies the host, the
IPv4-Address
specifies the fixed address to use, and the
Hostname
is assigned as a symbolic name to the requesting host. The optional
Lease time
can be used to set non-standard host-specific lease time, e.g. 12h, 3d or infinite.
Hostname
MAC
-Address
IPv4
-Address
Lease time
DUID
IPv6
-Suffix (hex)
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