Try to update the webproxy blacklist:
```
vyos@r4# run update webproxy blacklists
proxy:x:13:13:proxy:/bin:/bin/sh
proxy:x:13:
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (67) Access denied: 530
Unable to download [ftp://ftp.univ-tlse1.fr/pub/reseau/cache/squidguard_contrib/blacklists.tar.gz]!
[edit]
vyos@r4#
```
They start using `Captcha` for the white list before you can download/update ftp.univ-tlse1.fr
and after you pass the captcha, it works again:
```
vyos@r4# run update webproxy blacklists
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 27.5M 100 27.5M 0 0 6313k 0 0:00:04 0:00:04 --:--:-- 6314k
Uncompressing blacklist..
```