Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-E-G/A User Manual
Rev.
2.16
www.weidmuller.com
62
IP Address Filter Configuration:
The IP filter allows can be used to permit or deny network access to specific devices through the use of Blacklists
(blocking of traffic that matches a rule) and Whitelists (allow traffic that matches a rule).
The IP filter entry will match either source or destination address in the packet. That is, if either the source or destination
IP address falls within the address range specified in the rule, the packet is matched and will be discarded (Blacklist) or
allowed (Whitelist).
If the protocol is specified, the protocol of the packet must also match. If the protocol is TCP or UDP the source or
destination TCP/UDP can also be inspected. If the IP address and protocol matches and the source or destination port
number falls within the range specified, the packet is matched.
Note: Configuration pages use TCP protocol on ports 80 and 443. Create Whitelist rules specifying the
configuration PC's IP address, with TCP protocol, ports 80 and 443.
ARP Filter Configuration
ARP (Address Resolution Protocol) is a broadcast message and is primarily used for finding a MAC address when only
the IP or some other Network Layer address is known.
On large networks, you generally tend to get a high proportion of broadcast messages. Using ARP filters is useful for
reducing broadcast traffic on the wireless network by only allowing ARP requests for known units to pass, or blocking ARP
requests for high use addresses.
Select “Blacklist”
or “Whitelist”.
Blacklist will prevent all listed devices from accessing the module and using the radio link.
Whitelist will allow devices with the IP addresses listed to communicate with the module and
utilize the radio link. All other devices are blocked.
Add Entry
Add a row to the table of IP Address filter rules
Delete Entry
Delete the currently selected IP address filter rule.
Enable
Check this box to enable the rule
IP Address Min,
IP Address Max
These set the range of IP addresses. All addresses within the specified range are affected
by the rule.
Port Min,
Port Max
When the protocol is set to TCP or to UDP, this is the range of port addresses to which the
rule applies. When protocol is set to All or to ICMP, these settings have no effect.
Protocol
This chooses the protocol to which the rule applies. The rule can apply to Any protocol (All),
or to only one of TCP, UDP, or ICMP (Ping).
Save Changes
Save changes to non-volatile memory (Reset is required to activate)
Save Changes and
Reset
Save to non-volatile memory and restart to activate changes
Select “Blacklist” or
“Whitelist”.
A Blacklist will block ARP requests that match the entry.
A Whitelist will allow only ARP Requests that match the entry. All other devices are
blocked.
Add Entry
Add a row to the table of ARP Address filter rules
Delete Entry
Delete the currently selected ARP address filter rule.
Enable
Check this box to enable the rule
IP Address
This sets the IP address that you wish to filter.
IP Netmask
Sets the IP Netmask
Save Changes
Save changes to non-volatile memory (Reset is required to activate)
Save Changes and Reset
Save to non-volatile memory and restart to activate changes
