Metacom MC601 - Page 28

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Metacom MC601 Router Page 28

User Manual

• In a future version the user may specify traffic between any of the available interfaces and

forward data between them.

• If there are errors in one of the rules the rule number will be displayed in the output. i.e ***

Invalid rule <num> ***

Here are some things to consider when adding rules:

• The rules are implemented internally using the linux iptables utility

• If eth1 is used for an interface then the interface needs to be enabled.

• If a destination port is specified then the direction may not be <->.

• Internally eth0  eth1 or eth0  eth0 will generate a forward rule between the interfaces

using protocol, IPs and destination port.

• New connections should be allowed if the destination is both ways (ie. <->)

• Internally eth0 <-> eth1 will generate a forward rule between the interfaces using only the

protocol.

• A DNAT (Destination nat) is only allowed for WAN (protocol must be set).

• The router port is ignored for directions  or <->.

• Internally WAN<-, WAN<->, VPN<- or VPN<-> generate a forward rule using protocol, IPs

and destination port.

• If a firewall nat is used (section 3.5.5) then all packets are forwarded from ppp0 (ie.WAN) to

the destination IP/network and visa versa.

Cellular Continuum Series