Filter and Firewall
Left running head:
Chapter name (automatic)
700
Beta
Beta
CLI Configuration Guide
Alcatel-Lucent
P
OLICIES
T
HAT
N
EED
TO
BE
F
ORMULATED
•
Apart from this, the DMZ has to be protected from DoS attacks.
•
Checks have to be done on LAN ports for traffic from valid IP addresses.
RFC1918 addresses from the Internet have to be discarded.
•
ICMP rate limiting to be applied to 2/second.
IP A
DDRESSING
S
CHEME
1.
LAN addresses fall in 3 subnets
•
10.0.0.0/24
•
192.168.0.0/24
•
172.16.0.0/25
2.
The Public IP of the link is 202.24.45.100. This is forwarded to Mail Server and
Web Server using NAT.
Serial
Number
From
To
Allow
1.
Trusted/LAN
DMZ All
services
2.
Untrusted/Internet
Mail server in DMZ
SMTP, POP, IMAP, HTTP,
HTTPS, DNS.
3.
Untrusted/Internet
Web server in
DMZ
HTTP, HTTPS, DNS, FTP.
4.
Trusted/LAN
Internet
All services
5.
DMZ
Internet/Untrusted
SMTP, DNS
6.
DMZ/Internet
Trusted/LAN
Nil
Summary of Contents for OmniAccess 700
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