Time out during connect (likely firewall problem)

Help
4

Supplemental, Hi @ajaxx please see Certbot 2.11.0 Release for a newer version of Certbot.

Edit

Using the online tool Let's Debug yields these results https://letsdebug.net/dev.isko.dilc.info/2260352

ANotWorking
Error
dev.isko.dilc.info has an A (IPv4) record (202.92.129.149) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with dev.isko.dilc.info/202.92.129.149: Get "http://dev.isko.dilc.info/.well-known/acme-challenge/letsdebug-test": dial tcp 202.92.129.149:80: i/o timeout

Trace:
@0ms: Making a request to http://dev.isko.dilc.info/.well-known/acme-challenge/letsdebug-test (using initial IP 202.92.129.149)
@0ms: Dialing 202.92.129.149
@10000ms: Experienced error: dial tcp 202.92.129.149:80: i/o timeout

IssueFromLetsEncrypt
Error
A test authorization for dev.isko.dilc.info to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
202.92.129.149: Fetching http://dev.isko.dilc.info/.well-known/acme-challenge/Kozn69dEbUrQ-M9iQVSBEtmDT4IGvI408o2vCSXVRVI: Timeout during connect (likely firewall problem)

Note the "Timeout during connect (likely firewall problem)".

I find both Ports 80 & 443 are being filtered, from my location in Oregon, USA.

$ nmap -Pn -p80,443 dev.isko.dilc.info
Starting Nmap 7.80 ( https://nmap.org ) at 2024-10-22 19:28 UTC
Nmap scan report for dev.isko.dilc.info (202.92.129.149)
Host is up.
rDNS record for 202.92.129.149: i129-149.upd.edu.ph

PORT    STATE    SERVICE
80/tcp  filtered http
443/tcp filtered https

Nmap done: 1 IP address (1 host up) scanned in 5.70 seconds
3 Likes