Re: VPN Not Working
- From: Mr_Huang <mr.huang.hk@xxxxxxxxx>
- Date: Mon, 27 Aug 2007 11:07:31 -0000
thank you for your valurable information,
Is there a way to telnet to the remote device/gateway from my NS25 to
see if those ports is opening or not.
On Aug 27, 4:17 pm, VANHULLEBUS Yvan <vanhu@xxxxxxxxxxxxxx> wrote:
Mr_Huang <mr.huang...@xxxxxxxxx> writes:
Dear guru,
I'm pretty new to NS, we have configured the Lan-to-lan VPN as per the
instruction in the manual, however, the tunnel failed and inactive by
"get sa". Wondering it would be blocked by the ISP-router, we have
asked our ISP to open the "VPN" ports. we are using g2-esp-3des-sha
for P2 and Pre-g2-3des-sha for P1.
What ports are required on my router to allow such connection.
udp/500 for ipsec?
You'll have to open 500/udp for negociations, and ESP protocol for
encapsulated traffic (unless there is NAT on the way and NAT-T
extension used, in that case, you'll have to open 4500/udp).
Yvan.
.
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