# Timeout during connect (likely firewall problem) **URL:** \ **Category:** Help\ **Created:** [April 21, 2020, 9:03pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294 "2020-04-21T21:03:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![al\_zain92](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/al_zain92/32/39069_2.png) [@al\_zain92](https://community.letsencrypt.org/u/al_zain92)\ **Post date:** [April 21, 2020, 9:03pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294/1 "2020-04-21T21:03:42Z")
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. [https://crt.sh/?q=example.com](https://crt.sh/?q=example.com)), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help. My domain is: gate.cj.co.id I ran this command: sudo certbot certonly --webroot -w /var/www/html -d gate.cj.co.id It produced this output: Failed authorization procedure. gate.cj.co.id (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: During secondary validation: Fetching [http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq\_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r\_vqDY:](http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r_vqDY:) Timeout during connect (likely firewall problem) IMPORTANT NOTES: - The following errors were reported by the server: My web server is (include version): Apache 2.4 The operating system my web server runs on is (include version): Ubuntu Server 18.04 My hosting provider, if applicable, is: VPS I can login to a root shell on my machine (yes or no, or I don’t know): yes I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no The version of my client is (e.g. output of `certbot --version` or `certbot-auto --version` if you’re using Certbot): 0.31.0 ---
**Author:** ![JuergenAuer](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/juergenauer/32/26491_2.png) [@JuergenAuer](https://community.letsencrypt.org/u/JuergenAuer)\ **Post date:** [April 21, 2020, 9:07pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294/2 "2020-04-21T21:07:04Z")
Hi @al_zain92 > [@al\_zain92](#): > > During secondary validation: Fetching [http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq\_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r\_vqDY:](http://gate.cj.co.id/.well-known/acme-challenge/BxAW3uTq_-VJjNEBZaA1Zr8cbrvshY7x1KSN9r_vqDY:) Timeout during connect (likely firewall problem) "During secondary validation" is important. Read > [@ACME v1/v2: Validating challenges from multiple network vantage points](https://community.letsencrypt.org/t/acme-v1-v2-validating-challenges-from-multiple-network-vantage-points/112253): > > O… Letsencrypt checks your domain from different networks. The error says: The main Letsencrypt servers are able to connect your domain. The additional servers are blocked. May be you block some ip addresses or you have some regional filters. ---
**Author:** ![al\_zain92](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/al_zain92/32/39069_2.png) [@al\_zain92](https://community.letsencrypt.org/u/al_zain92)\ **Post date:** [April 21, 2020, 9:17pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294/3 "2020-04-21T21:17:56Z")
I did’nt block some IP, before I also disasable ufw but still got error. I use dedicated server and IP from provider Cloud you tell how to check whether my ip accessable from letsencrypt server? ---
**Author:** ![al\_zain92](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/al_zain92/32/39069_2.png) [@al\_zain92](https://community.letsencrypt.org/u/al_zain92)\ **Post date:** [April 21, 2020, 9:29pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294/4 "2020-04-21T21:29:37Z")
Btw I tried using staging environment successful ---
**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\ **Post date:** [May 21, 2020, 9:29pm UTC](https://community.letsencrypt.org/t/timeout-during-connect-likely-firewall-problem/120294/5 "2020-05-21T21:29:45Z")
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