D-Link NetDefend DFL-CP310 User Manual page 221

T able 31: Firewall Security Levels
This Does this...
level...
Low Enforces basic control on
incoming connections,
wh ile permitting all
outgo ing connections.
Medium Enfor ces strict control on
all incoming connections,
while pe mitting safe
outgo g in connections.
This i s the default level
and is rec
most cases. Leave it
unchanged u
have a specific need for a
hig he r or lower secu
level.
High Enforces strict control on
all inco ming and outgoing
connections.
Note: If the security policy is remotely managed, this lever might be disabled.
Chapter 9: Setting Your Security Policy
Further Details
All inbound traffic is blocked to the external
NetDefend firewall IP address, except for ICMP
echoes ("pings").
All outbound connections are allowed.
All i
All outbound traffic is allowed
r
except for Wind
138, 139 and 445).
ommended for
nless you
rity
All inbound traffic is blocked.
Restricts all outbound traffic except for the
following: Web traffic (HTTP, HTTPS), email
(IMAP, POP3, SMTP), ftp, newsgroups, Telnet,
DNS, IPSEC IKE and VPN traffic.
nbound traffic is blocked.
ows file sharing (NBT ports 137,
Setting the Firewall Security Level
to the Internet
205