Security
Firewall
12-3
The following tables indicate how some common applications are affected by the preset
firewall settings.
Outgoing traffic
Firewall setting
Application Low High
FTP (passive mode) Passed
Passed
Passed
Passed
Passed
Blocked
Passed
Passed
Passed
Passed
Blocked
FTP (active mode)
Web (HTTP, HTTPS)
SNMP
Telnet
Windows networking
ping
PPTP from client station to remote server
NetMeeting (make call)
IPSec pass-through
NetBIOS
Incoming traffic
Firewall setting
Application Low High
FTP (passive mode) Passed Blocked
FTP (active mode) Passed Blocked
Web (HTTPS) Passed Blocked
Web (HTTP) Passed Blocked
Telnet Passed Blocked
Windows networking Passed Blocked
PPTP from remote client to a server on the local network Passed Blocked
ping client on local network Passed Blocked
IPSec pass-through Passed Blocked
NetBIOS Passed Blocked
NetMeeting (receive call) Passed Blocked