Én a napokban lőttem be L2TP-t szintén EdgeRouter-4-en ezt a leírást követve. Az alábbi tűzfalszabályok vannak WAN_LOCAL-ra:
# show firewall name WAN_LOCAL | no-more
default-action drop
description "WAN to router"
rule 10 {
action drop
description "drop ping flood"
icmp {
type 8
}
log disable
protocol icmp
recent {
count 20
time 10
}
}
rule 20 {
action accept
description "allow ping"
icmp {
type 8
}
log disable
protocol icmp
recent {
}
}
rule 30 {
action accept
description "Allow established/related"
state {
established enable
related enable
}
}
rule 40 {
action drop
description "Drop invalid state"
log disable
state {
invalid enable
}
}
rule 50 {
action accept
description ike
destination {
port 500
}
log disable
protocol udp
}
rule 60 {
action accept
description esp
log disable
protocol esp
}
rule 70 {
action accept
description nat-t
destination {
port 4500
}
log disable
protocol udp
}
rule 80 {
action accept
description l2tp
destination {
port 1701
}
ipsec {
match-ipsec
}
log disable
protocol udp
}