On Fedora 42, there is a firewalld installed, but I don't know how to set it up to make it as strict as "ufw enable" so I can't connect.
On Thu, Jan 15, 2026, at 7:40 PM, Randall Rose wrote: > Unfortunately I am in a situation where I need to rebuild some machines > with only a Debian and a Fedora install disk to work from. With > Debian, it's hard to connect to the internet since Debian doesn't like > to provide a firewall in the initial install. > > Here's what I tried with Debian 13: > 1. install from DVD > 2. go back to DVD, pull iptables .deb file (which the default install > didn't set up) off DVD > 3. install iptables (version number is 1.8.11, using nf_tables) > 4. fix sources.list so it points back to debian.org repositories > 5. go to out-of-date Ubuntu machine that can't safely connect to > internet since it's no longer supported, > run ufw enable, dump output of iptables-save and ip6tables-save in text > files (same version of iptables) > 6. use those text files on Debian machine as input to iptables-restore > and ip6tables-restore > 7. turn on wifi connection > 8. Result: on Debian machine, Firefox can't connect to any site, > although the Software app claims it is can see that all updates are up > to date. > > Alternatively, starting at step 5, I can simply run "iptables -A INPUT > -j DROP" and "ip6tables -A INPUT -j DROP" but I get the same result. > > What am I doing wrong? Looks like the firewall is too strict so that > Firefox can't connect. _______________________________________________ Discuss mailing list [email protected] https://lists.blu.org/mailman/listinfo/discuss
