yeah i should have done this before, i know

firewall/redirection.go

@@ -0,0 +1,27 @@
+package firewall
+
+import "fmt"
+
+type Redirection struct {
+	Interface  string
+	Protocol   string
+	SrcAddress string
+	SrcPort    int
+	DstAddress string
+	DstPort    int
+}
+
+func NewRedirection(iface string, proto string, port_from int, addr_to string, port_to int) *Redirection {
+	return &Redirection{
+		Interface:  iface,
+		Protocol:   proto,
+		SrcAddress: "",
+		SrcPort:    port_from,
+		DstAddress: addr_to,
+		DstPort:    port_to,
+	}
+}
+
+func (r Redirection) String() string {
+	return fmt.Sprintf("[%s] (%s) %s:%d -> %s:%d", r.Interface, r.Protocol, r.SrcAddress, r.SrcPort, r.DstAddress, r.DstPort)
+}