nftables Init failing

[Former user]

Operating system: Debian 10.7 Buster SSHGuard version: 2.3.1-1 Firewall: nftables

When starting SSHGuard via systemd, I would get the following error and notice that the tables/sets/etc. were not being created in nftables:

sshg-fw-nft-sets: Could not initialize firewall

I reviewed the script that was run (/usr/lib/x86_64-linux-gnu/sshg-fw-nft-sets). If you remove the redirection to /dev/null on L20, the firewall initializes correctly and everything works great.

[Kevin Zheng]

Thanks for the report. Do you know why the redirect is failing? Any other error messages that show up?

Do you know what shell is used for your Debian release's /bin/sh? Is it bash, ash, or something else?

[Kevin Zheng]

No feedback from submitter; please re-open if more information becomes available.