Yes , that is very strange.
I can install other deb packages without any problem and also http-download from jitsi.org works.
sudo apt update
Hit:1 archive. ubuntu. com/ubuntu focal InRelease
Get:2 archive. ubuntu. com/ubuntu focal-updates InRelease [114 kB]
Get:3 archive. ubuntu. com/ubuntu focal-backports InRelease [101 kB]
Get:4 archive. ubuntu. com/ubuntu focal-security InRelease [109 kB]
Hit:5 download. jitsi. org stable/ InRelease
Fetched 324 kB in 1s (489 kB/s)
Reading package lists… Done
Building dependency tree
Reading state information… Done
All packages are up to date.
If i do that with HTTP download i missing only two files.
sudo apt -y install jitsi-meet
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following additional packages will be installed:
ca-certificates-java coturn fontconfig-config fonts-dejavu-core java-common jicofo jitsi-meet-prosody jitsi-meet-turnserver jitsi-meet-web jitsi-meet-web-config jitsi-videobridge2 libavahi-client3
libavahi-common-data libavahi-common3 libcups2 libevent-core-2.1-7 libevent-extra-2.1-7 libevent-openssl-2.1-7 libevent-pthreads-2.1-7 libfontconfig1 libgd3 libhiredis0.14 libjbig0 libjpeg-turbo8
libjpeg8 liblcms2-2 libmysqlclient21 libnginx-mod-http-image-filter libnginx-mod-http-xslt-filter libnginx-mod-mail libnginx-mod-stream libnspr4 libnss3 libpcsclite1 libpq5 libtiff5 libwebp6
libxi6 libxpm4 libxrender1 libxtst6 lua-bitop lua-event lua-expat lua-filesystem lua-sec lua-socket lua5.2 mysql-common nginx nginx-common nginx-core openjdk-14-jre-headless prosody sqlite3
ssl-cert x11-common
Suggested packages:
sip-router default-jre cups-common libgd-tools liblcms2-utils pcscd fcgiwrap nginx-doc libnss-mdns fonts-dejavu-extra fonts-ipafont-gothic fonts-ipafont-mincho fonts-wqy-microhei
| fonts-wqy-zenhei fonts-indic lua-dbi-mysql lua-dbi-postgresql lua-dbi-sqlite3 lua-zlib sqlite3-doc openssl-blacklist
The following NEW packages will be installed:
ca-certificates-java coturn fontconfig-config fonts-dejavu-core java-common jicofo jitsi-meet jitsi-meet-prosody jitsi-meet-turnserver jitsi-meet-web jitsi-meet-web-config jitsi-videobridge2
libavahi-client3 libavahi-common-data libavahi-common3 libcups2 libevent-core-2.1-7 libevent-extra-2.1-7 libevent-openssl-2.1-7 libevent-pthreads-2.1-7 libfontconfig1 libgd3 libhiredis0.14
libjbig0 libjpeg-turbo8 libjpeg8 liblcms2-2 libmysqlclient21 libnginx-mod-http-image-filter libnginx-mod-http-xslt-filter libnginx-mod-mail libnginx-mod-stream libnspr4 libnss3 libpcsclite1 libpq5
libtiff5 libwebp6 libxi6 libxpm4 libxrender1 libxtst6 lua-bitop lua-event lua-expat lua-filesystem lua-sec lua-socket lua5.2 mysql-common nginx nginx-common nginx-core openjdk-14-jre-headless
prosody sqlite3 ssl-cert x11-common
0 upgraded, 58 newly installed, 0 to remove and 0 not upgraded.
Need to get 72.8 MB/133 MB of archives.
After this operation, 358 MB of additional disk space will be used.
Err:1 download. jitsi. org stable/ jitsi-videobridge2 2.1-416-g2f43d1b4-1
Connection failed [IP: 8080]
Err:2 download. jitsi. org stable/ jicofo 1.0-690-1
Connection failed [IP: 8080]
E: Failed to fetch download. jitsi. org/stable/jitsi-videobridge2_2.1-416-g2f43d1b4-1_all.deb Connection failed [IP: 8080]
E: Failed to fetch download. jitsi. org/stable/jicofo_1.0-690-1_all.deb Connection failed [IP: 8080]
The proxy-configuration for http and https are still the same 