/etc/i2pd/i2pd.conf contains number of listening ports configuration (actually 10 or more when you look for “port”). Which ones should I open in firewall so other people can connect my node? Excluding ones that are meant for management of my node. I manage the node only locally.
So far I have only open/forwarded one port, one that is set a few lines below the line “## Port to listen for connections” that certainly allows relaying traffic for other I2P peers per the http://127.0.0.1:7070/ traffic stats.
Services HTTP Proxy Enabled
SOCKS Proxy Enabled
BOB Disabled
SAM Enabled
I2CP Enabled
I2PControl Disabled
Port forwarding does help. The problem is that you have forward the right ports. If you don’t don’t know what you are doing it is easy to accidentally forward the management interface which is a major security risk.
Honesty port forwarding is only really needed because of NAT. If you can get native IPv6 is way better