my little space
By default, Microsoft RPC allocate ports from 1024 – 65535.
To restrict them to 5000 – 5100, Use the Registry entries below.
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Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Rpc\Internet]
“Ports”=hex(7):35,00,30,00,30,00,30,00,2d,00,35,00,31,00,30,00,30,00,00,00,00, 00
“PortsInternetAvailable”=”Y”
“UseInternetPorts”=”Y”
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Configuring L2TP over IPSec for both Cisco PIX and Cisco Router on the Customer side.
Tricky things uncovered.
According to the documentation provided on how the L2TP is to be configured:
vpdn enable
!
vpdn-group 1
accept-dialin
protocol l2tp
virtual-template 1
terminate-from hostname BB-GGSN1
local name CPE-L2TP-Router
l2tp tunnel password 0 secret
!
interface Virtual-Template1
ip unnumbered FastEthernet0
peer default ip address pool l2tp-pool01
ppp authentication pap
!
ip local pool l2tp-pool01 10.9.2.201 10.9.2.220
For the curious souls like me, how the hell the router knows who’s BB-GGSN1.. so I added: