4 Nov
2021
4 Nov
'21
4:15 p.m.
Yes. I am trying this on a buyvm vps.
When I run sudo tcpdump -i ens3 -vvv host amprgw.ucsd.edu
This is what I got:
tcpdump: listening on ens3, link-type EN10MB (Ethernet), snapshot length 262144 bytes
So it does look like something is blocking it?
Kun
________________________________
From: 44Net <44net-bounces+dnwk=linkun.info(a)mailman.ampr.org> on behalf of Steve L
via 44Net <44net(a)mailman.ampr.org>
Sent: Wednesday, November 3, 2021 18:46
To: 44Net general discussion <44net(a)mailman.ampr.org>
Cc: Steve L <kb9mwr(a)gmail.com>
Subject: Re: [44net] Tunnel setup help: Debian 11
I have configured the public IP in the AMPR portal as
gateway.
If you just did this, wait a while like a half hour.
When I try to run find_password.sh in ampr-ripd-2.4, I
am stopped at Waiting for RIPv2 broadcasts... and never retrieve a password.
You
don't need to run the find password script or specify a password
if you are using ampr-ripd above version 1.14 (its hardcoded in the
program). But I do believe even if you run that, it should retrieve
it.
I usually start off really stripped down, with all firewall stuff off
till I know I am receiving the protocol 4 rip broadcasts.
Do you see anything with tcpdump ?
tcpdump -i eth0 -vvv host amprgw.ucsd.edu or ip proto \\icmp
If not, then something upstream is blocking protocol 4 from reaching
you. Seems like it might be outside of your home if your configuring
the interface directly with a public IP
In the iptables world, here is the ipencap (protocol 4) syntax:
iptables -A INPUT -p 4 -j ACCEPT
On Wed, Nov 3, 2021 at 6:11 PM KUN LIN via 44Net <44net(a)mailman.ampr.org> wrote:
I have been trying to configure the AMPRtunnel for a while without success. Could someone
please point me to the right direction.
I am running Debian 11 with public IP. I have configured the public IP in the AMPR portal
as gateway.
I am trying to follow this document
https://wiki.ampr.org/wiki/Ubuntu_Linux_Gateway_Example
When I try to run find_password.sh in ampr-ripd-2.4, I am stopped at Waiting for RIPv2
broadcasts... and never retrieve a password.
Here is what I have done so far.
in /etc/network/interfaces, I added
auto ens3:1
iface ens3:1 inet static
address 44.26.0.168
netmask 255.255.255.248
Then I created ipip tunnel using following commands
ip tunnel add ampr0 mode ipip local 209.141.42.9 ttl 255
ip link set dev ampr0 up
ifconfig ampr0 multicast
ip rule add to 44.0.0.0/8 table 44 priority 44
ip rule add from 44.26.0.168/29 table 44 priority 45
ip route add default dev ampr0 via 169.228.34.84 onlink table 44
ip route add 44.26.0.168/29 dev ens3 table 44
Then, I run ampr-ripd -d -v -i ens3 to get the password in order to plug into lat
command
ampr-ripd -s -i ampr0 -a 209.141.42.9-t 44 -p <SecretPassword>
However, the find_password.sh stopped at waiting for ripv2 broadcast. Here is the logs
for command
Using metric 0 for routes.
Using TCP window 840 for routes.
Using gateway 209.141.42.1 for direct 44net endpoints via interface ens3.
Waiting for RIPv2 broadcasts...
Any idea on what am I doing wrong?
Thanks
Kun
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