Siemens SINAUT MD741-1 System Manual page 58

Security functions
Figure 6-1
Firewall Rules (Incoming)
The Firewall Rules (Incoming) are used to define how to handle IP packets that are
received from external networks (e.g. the Internet) via EGPRS or GPRS. The
source is the sender of this IP packet. The destination is the local applications on
the SINAUT MD741-1.
In the factory setting, no incoming firewall rule is set initially, i.e. no IP packets can
go through.
New
Adds an additional firewall rule that you can then fill out.
Delete
Removes firewall rules that have been created.
Protocol
Select the protocol for which this rule will be valid. The following selections are
available: TCP, UDP, ICMP. If you select All, the rule is valid for all three protocols.
From IP
Enter the IP address of the external remote station that is allowed to send IP
packets to the local network. Do this by specifying the IP address or an IP range for
the remote station. 0.0.0.0/0 means all addresses.
To specify a range, use the CIDR notation - see the Glossary.
From port
Enter the port from which the external remote station is allowed to send IP packets.
(is only evaluated for the protocols TCP and UDP)
58
Security > Packet Filter
SINAUT MD741-1
C79000- G8976-C212