McAfee MAP-3300-SWG Product Guide - Page 295

Time Settings, Table 294, Option definitions - DNS Servers, Option definitions - Routing

Page 295 highlights

Overview of System features Setup Wizard Table 294 Option definitions - DNS Servers Option Server Address Definition Displays the IP addresses of the DNS servers. The first server in the list must be your fastest or most reliable server. If the first server cannot resolve the request, the appliance contacts the second server. If no servers in the list can resolve the request, the appliance forwards the request to the DNS root name servers on the Internet. If your firewall prevents DNS lookup (typically on port 53), specify the IP address of a local device that provides name resolution New Server/ Delete Adds a new server to the list, or removes one when, for example, when you need to Selected Servers decommission a server due to network changes. Only send queries to these servers Selected by default. McAfee recommends that you leave this option selected because it might speed up DNS queries as the appliance sends the queries to the specified DNS servers only. If they don't know the address, they go to the root DNS servers on the Internet. When they get a reply, the appliance receives it and caches the response so that other servers that query that DNS server can get an answer more quickly. If you deselect this option, the appliance first tries to resolve the requests, or might query DNS servers outside your network. Table 295 Option definitions - Routing Option Network Address Mask Gateway Metric New Route Enable dynamic routing Definition Type the network address of the route. Specifies how many hosts are on your network, for example, 255.255.255.0. Specifies the IP address of the router used as the next hop out of the network. The address 0.0.0.0 (IPv4), or :: (IPv6) means that the router has no default gateway. Specifies the preference given to the route. A low number indicates a high preference for that route. Add a new route to the table. Use the arrows to move the route up and down the list. The routes are chosen based on their metric value. Use this option in transparent router mode only. When enabled, the appliance can: • receive broadcast routing information received over RIP (default) that it applies its routing table so you don't have to duplicate routing information on the appliance that is already present in the network. • broadcast routing information if static routes have been configured through the user interface over RIP. Time Settings Use this page in the Custom Setup Wizard to set the time and date, and any details for the use of the Network Time Protocol (NTP). NTP synchronizes timekeeping among devices in a network. Some Internet Service Providers (ISPs) provide a timekeeping service. For more information about NTP, see RFC 1305 at www.apps.ietf.org/rfc/ rfc1305.html, www.ntp.org or www.ntp.isc.org The appliance can synchronize its time settings to other devices, keeping its own logs, reports and schedules accurate. Because NTP messages are not sent often, they do not noticeably affect the appliance's performance. McAfee Email and Web Security Appliances 5.6.0 Product Guide 295

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Table 294
Option definitions — DNS Servers
Option
Definition
Server Address
Displays the IP addresses of the DNS servers. The first server in the list must be
your fastest or most reliable server. If the first server cannot resolve the request,
the appliance contacts the second server. If no servers in the list can resolve the
request, the appliance forwards the request to the DNS root name servers on the
Internet.
If your firewall prevents DNS lookup (typically on port 53), specify the IP address of
a local device that provides name resolution
New Server/ Delete
Selected Servers
Adds a new server to the list, or removes one when, for example, when you need to
decommission a server due to network changes.
Only send queries
to these servers
Selected by default. McAfee recommends that you leave this option selected because
it might speed up DNS queries as the appliance sends the queries to the specified
DNS servers only. If they don't know the address, they go to the root DNS servers
on the Internet. When they get a reply, the appliance receives it and caches the
response so that other servers that query that DNS server can get an answer more
quickly.
If you deselect this option, the appliance first tries to resolve the requests, or might
query DNS servers outside your network.
Table 295
Option definitions — Routing
Option
Definition
Network Address
Type the network address of the route.
Mask
Specifies how many hosts are on your network, for example, 255.255.255.0.
Gateway
Specifies the IP address of the router used as the next hop out of the network. The
address 0.0.0.0 (IPv4), or :: (IPv6) means that the router has no default gateway.
Metric
Specifies the preference given to the route. A low number indicates a high
preference for that route.
New Route
Add a new route to the table. Use the arrows to move the route up and down the
list. The routes are chosen based on their metric value.
Enable dynamic
routing
Use this option in transparent router mode only. When enabled, the appliance can:
receive broadcast routing information received over RIP (default) that it applies its
routing table so you don't have to duplicate routing information on the appliance
that is already present in the network.
broadcast routing information if static routes have been configured through the
user interface over RIP.
Time Settings
Use this page in the Custom Setup Wizard to set the time and date, and any details for the use of the
Network Time Protocol (NTP).
NTP synchronizes timekeeping among devices in a network. Some Internet Service Providers (ISPs)
provide a timekeeping service. For more information about NTP, see RFC 1305 at www.apps.ietf.org/rfc/
rfc1305.html, www.ntp.org or www.ntp.isc.org
The appliance can synchronize its time settings to other devices, keeping its own logs, reports and
schedules accurate. Because NTP messages are not sent often, they do not noticeably affect the
appliance's performance.
Overview of System features
Setup Wizard
McAfee Email and Web Security Appliances 5.6.0 Product Guide
295