Firewall Concepts and Configuration - HP Operations Manager

Firewall Configuration in OVO
Configuring OVO for Firewall Environments
Configuring OVO for Firewall Environments
A firewall is a router system that filters all communication between two
subnets. Only packets that pass at least one filter rule are allowed to
pass the firewall. All other packets are discarded.
A filter rule usually consists of the protocol type (for example TCP, UDP
and ICMP), a direction (inside->outside or outside->inside), a source port
and a destination port. Instead of one port, a port range can be specified.
Figure 1-3 Example of a firewall configuration
Source Port
12001
14001
TCP
Firewall
Destination Port
RPC Client
15.136.120.193
Rules:
allow TCP
from 15.136.120.193 port 12001
RPC Server
192.168.1.2
to 192.168.1.2 port 135
NOTE The default configuration for communication over a firewall are
described first. Special cases are described in subsequent chapters.
Chapter 1 35
135
13001