Given this is the accepted answer, I decided to update this answer.
Based on all the rest of answers as of today (10/10/2021), the following have updated snapshots:
There is also: https://snapshots.tulip.tools/#/
with snapshots for full and rolling, and the context and store folders as .tar.gz for archive for all networks ( the tezos node does not yet support export/import of archive snapshots, so thats why .tar.gz )
Here is an update for this question, these snapshots work perfectly when you extract them with xz.
curl -s https://api.github.com/repos/Phlogi/tezos-snapshots/releases/latest | jq -r ".assets | select(.name) | .browser_download_url" | grep roll | xargs wget -q --show-progress
curl -s https://api....
I don't agree that the mempool behavior indicate that the fee is all good. On the contrary. Public nodes like Giganode generally don't reject operations based on fee in the prevalidation, while most other nodes do apply the default filter. The fee is most likely too low. I don't know exactly how many bytes you got there, but increasing the fee with 10 mutez ...
Yes, open this port to the world. It allows others tezos nodes to discover and connect to you.
Block all ports except 9732
Private mode simply tells other nodes that you do not accept incoming connections. This will lower the number of nodes that you stay connected to.
There are no security concerns regarding the node itself. The node has nothing to do with ...
[Edit] As Simon has suggested, the fee has been reduced, and the only restriction is to have 1 mutez left on the account or undelegate the account if the account is used for delegation. Jev suggested a link to the newly provided documentation.
Tezos does not allow for sending the whole address balance, some dust left on the account is required to be able to ...
This is May 2021. Most snapshots providers listed here have stopped updating, and some (tezosshots[.]com) are actually redirecting to questionable sites (at least spam, if not downright malicious).
These are the only currently updated snapshot providers that I am aware of (happy to add more to the list and keep it updated.)