Sorry for not being closely bitcoind related issue, but any help is appreciated:
1. I successfuly setup my bitcoin full node based on bitcoind 0.15.1 running on odroid hc1 with ubuntu and ssd disk connected through hc1 sata. I really like the compact setup. It has synced today in less then 2 days
2. I run it in my home network, connected to internet via cable to home router. I don't have public IP, as my ISP does not provide it, exposes one shared outside IP
3. I have unlimited data plan so I am trying to achieve that my node is reachable by other nodes so I
- setup OpenVPN server on small ubuntu VPS with public IP I have, seems to work correctly
- setup OpenVPN client on my odroid, seems to work
- setup tunneling of traffic through OpenVPN server (
https://linode.com/docs/networking/vpn/tunnel-your-internet-traffic-through-an-openvpn-server/)
4. After setup, my odroid annouces IP address of VPN server (wget -qO-
http://ipecho.net/plain ; echo), and keeps multiple connections to other nodes
However when I try to reach my node through Bitnodes or other port checker I get port 8333 (and actually all other common ports except 22) closed.
I am using iptables-persistent with rules advised in linode docs, where I added rules for bitcoin mainnet / testnet / lightning ports. I have ufw firewall rules (but ports does not work with ufw disabled anyway). I have net.ipv4.ip_forward=1 enabled in /etc/sysctl.d/99-sysctl.conf and openvpn server.conf setup accordingly on my VPS.
Here are mine /etc/iptables/rules.v4, once again any help appreciated
File: /etc/iptables/rules.v4
# Generated by iptables-save v1.6.0 on Wed Feb 7 00:59:06 2018
*nat
:PREROUTING ACCEPT [3:185]
:INPUT ACCEPT [2:88]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
-A POSTROUTING -s 10.0.0.0/8 -o eth0 -j MASQUERADE
-A POSTROUTING -s 10.0.0.0/8 -o eth0 -j MASQUERADE
-A POSTROUTING -s 10.0.0.0/8 -o eth0 -j MASQUERADE
-A POSTROUTING -s 10.89.0.0/24 -o eth0 -j MASQUERADE
-A POSTROUTING -s 10.89.0.0/24 -o eth0 -j MASQUERADE
COMMIT
# Completed on Wed Feb 7 00:59:06 2018
# Generated by iptables-save v1.6.0 on Wed Feb 7 00:59:06 2018
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -i lo -j ACCEPT
-A INPUT -s 127.0.0.0/8 ! -i lo -j REJECT --reject-with icmp-port-unreachable
-A INPUT -p icmp -m state --state NEW -m icmp --icmp-type 8 -j ACCEPT
-A INPUT -p icmp -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 22 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 8333 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 18333 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 9735 -j ACCEPT
-A INPUT -i eth0 -p udp -m state --state NEW,ESTABLISHED -m udp --dport 1194 -j ACCEPT
-A INPUT -i eth0 -p udp -m state --state ESTABLISHED -m udp --sport 53 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 53 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 80 -j ACCEPT
-A INPUT -i eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 443 -j ACCEPT
-A INPUT -i tun0 -j ACCEPT
-A INPUT -m limit --limit 3/min -j LOG --log-prefix "iptables_INPUT_denied: "
-A INPUT -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i tun0 -j ACCEPT
-A FORWARD -s 10.89.0.0/24 -i tun0 -o eth0 -j ACCEPT
-A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -m limit --limit 3/min -j LOG --log-prefix "iptables_FORWARD_denied: "
-A FORWARD -j REJECT --reject-with icmp-port-unreachable
-A OUTPUT -o lo -j ACCEPT
-A OUTPUT -p icmp -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 22 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 8333 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 18333 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state ESTABLISHED -m tcp --sport 9735 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m state --state ESTABLISHED -m udp --sport 1194 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m state --state NEW,ESTABLISHED -m udp --dport 53 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 53 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 80 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m state --state NEW,ESTABLISHED -m tcp --dport 443 -j ACCEPT
-A OUTPUT -o tun0 -j ACCEPT
-A OUTPUT -m limit --limit 3/min -j LOG --log-prefix "iptables_OUTPUT_denied: "
-A OUTPUT -j REJECT --reject-with icmp-port-unreachable
COMMIT
