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new: new ndp.spoof.router_lifetime option

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This commit is contained in:
konradh 2024-01-24 17:56:55 +01:00
parent 924ff5753d
commit 4dc7bae48c
2 changed files with 18 additions and 10 deletions
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24
modules/ndp_spoof/ndp_spoof.go
View file

@ -13,12 +13,13 @@ import (
type NDPSpoofer struct { type NDPSpoofer struct {
session.SessionModule session.SessionModule
neighbour net.IP neighbour net.IP
prefix string prefix string
prefixLength int prefixLength int
addresses []net.IP routerLifetime int
ban bool addresses []net.IP
waitGroup *sync.WaitGroup ban bool
waitGroup *sync.WaitGroup
} }
func NewNDPSpoofer(s *session.Session) *NDPSpoofer { func NewNDPSpoofer(s *session.Session) *NDPSpoofer {
@ -45,6 +46,9 @@ func NewNDPSpoofer(s *session.Session) *NDPSpoofer {
mod.AddParam(session.NewIntParameter("ndp.spoof.prefix.length", "64", mod.AddParam(session.NewIntParameter("ndp.spoof.prefix.length", "64",
"IPv6 prefix length for router advertisements.")) "IPv6 prefix length for router advertisements."))
mod.AddParam(session.NewIntParameter("ndp.spoof.router_lifetime", "10",
"Router lifetime for router advertisements in seconds."))
mod.AddHandler(session.NewModuleHandler("ndp.spoof on", "", mod.AddHandler(session.NewModuleHandler("ndp.spoof on", "",
"Start NDP spoofer.", "Start NDP spoofer.",
func(args []string) error { func(args []string) error {
@ -117,7 +121,11 @@ func (mod *NDPSpoofer) Configure() error {
if err, mod.prefix = mod.StringParam("ndp.spoof.prefix"); err != nil { if err, mod.prefix = mod.StringParam("ndp.spoof.prefix"); err != nil {
return err return err
} else if err, mod.prefixLength = mod.IntParam("ndp.spoof.prefix.length"); err != nil { }
if err, mod.prefixLength = mod.IntParam("ndp.spoof.prefix.length"); err != nil {
return err
}
if err, mod.routerLifetime = mod.IntParam("ndp.spoof.router_lifetime"); err != nil {
return err return err
} }
@ -153,7 +161,7 @@ func (mod *NDPSpoofer) Start() error {
if mod.prefix != "" { if mod.prefix != "" {
mod.Debug("sending router advertisement for prefix %s(%d)", mod.prefix, mod.prefixLength) mod.Debug("sending router advertisement for prefix %s(%d)", mod.prefix, mod.prefixLength)
err, ra := packets.ICMP6RouterAdvertisement(mod.Session.Interface.IPv6, mod.Session.Interface.HW, err, ra := packets.ICMP6RouterAdvertisement(mod.Session.Interface.IPv6, mod.Session.Interface.HW,
mod.prefix, uint8(mod.prefixLength)) mod.prefix, uint8(mod.prefixLength), uint16(mod.routerLifetime))
if err != nil { if err != nil {
mod.Error("error creating ra packet: %v", err) mod.Error("error creating ra packet: %v", err)
} else if err = mod.Session.Queue.Send(ra); err != nil { } else if err = mod.Session.Queue.Send(ra); err != nil {

4
packets/icmp6.go
View file

@ -40,7 +40,7 @@ func ICMP6NeighborAdvertisement(srcHW net.HardwareAddr, srcIP net.IP, dstHW net.
var macIpv6Multicast = net.HardwareAddr([]byte{0x33, 0x33, 0x00, 0x00, 0x00, 0x01}) var macIpv6Multicast = net.HardwareAddr([]byte{0x33, 0x33, 0x00, 0x00, 0x00, 0x01})
var ipv6Multicast = net.ParseIP("ff02::1") var ipv6Multicast = net.ParseIP("ff02::1")
func ICMP6RouterAdvertisement(ip net.IP, hw net.HardwareAddr, prefix string, prefixLength uint8) (error, []byte) { func ICMP6RouterAdvertisement(ip net.IP, hw net.HardwareAddr, prefix string, prefixLength uint8, routerLifetime uint16) (error, []byte) {
eth := layers.Ethernet{ eth := layers.Ethernet{
SrcMAC: hw, SrcMAC: hw,
DstMAC: macIpv6Multicast, DstMAC: macIpv6Multicast,
@ -69,7 +69,7 @@ func ICMP6RouterAdvertisement(ip net.IP, hw net.HardwareAddr, prefix string, pre
adv := layers.ICMPv6RouterAdvertisement{ adv := layers.ICMPv6RouterAdvertisement{
HopLimit: 255, HopLimit: 255,
Flags: 0x08, // prf Flags: 0x08, // prf
RouterLifetime: 1800, RouterLifetime: routerLifetime,
Options: []layers.ICMPv6Option{ Options: []layers.ICMPv6Option{
{ {
Type: layers.ICMPv6OptSourceAddress, Type: layers.ICMPv6OptSourceAddress,