Hello!
I’ve got “protection” feature by default (and I didn’t notice I even had it up until now) from my internet provider, Bezeq International. In the last few days I was experiencing selective reachability. Some IPs were just blocked by the “protection”.
More than 20 minutes with support that wanted to install their binaries on my laptop (I couldn’t do it for many reasons) and then about 5 minutes with some more senior guy that after hearing the symptoms just turned that thing off. Everything works fine now.
Hope this helps other people so they could recognize the situation and immediately know what’s happening.
Details follow:
- One of GitHub web IPs was blocked.
- Broken FaceBook
;; ANSWER SECTION:
static.xx.fbcdn.net. 3599 IN CNAME scontent.xx.fbcdn.net.
scontent.xx.fbcdn.net. 59 IN A 157.240.1.23 - Broken AWS. Manifested in timeouts talking to various services endpoints.
Following are just screenshots of http://ec2-reachability.amazonaws.com/ :
Ilya's blog 
Can you please describe what local troubleshooting you did to identify the “protection” ?
LikeLike
* some of the sites where unreachable while being reachable from other places * all devices display the same behaviour on both LAN and wifi * everything is resolvable (I use 8.8.8.8 DNS) * curl https://PROBLEMATIC_IP/ times out
LikeLike