FiOS Router User Manual
105
© 2009 Verizon. All Rights Reserved.
Typical Security
Blocked
- No access
to local network from
Internet, except as
configured in the Port
Forwarding,
DMZ
host, and
Remote Access screens.
Unrestricted
- All
services are permitted,
except as configured in
the Access Control screen.
Minimum
Security
Unrestricted
- Permits
full access from Internet
to local network; all
connection attempts
permitted.
Unrestricted
- All services
are permitted, except as
configured in the Access
Control screen.
These services include Telnet, FTP, HTTP, HTTPS, DNS, IMAP, POP3 and SMTP.
Note:
Some applications (such as some Internet messengers and Peer-To-Peer
client applications) tend to use these ports if they cannot connect with their
own default ports. When applying this behavior, these applications will not be
blocked outbound, even at the Maximum Security level.
To configure the FiOS Router’s firewall security settings:
From the General screen, select a security level by clicking the appropriate
1.
radio button. Using the Minimum Security setting may expose the local
network to significant security risks, and thus should only be used for short
periods of time.
Check the “Block IP Fragments” box to protect the local network from
2.
a common type of hacker attack that uses fragmented data packets to
sabotage the network. Note that VPN over IPSec and some UDP-based
services make legitimate use of IP fragments. IP fragments must be allowed
to pass into the local network to use these services.
