when i want to update kali 2019.4 this message appear to me
apt-get update
Err:1
http://http.kali.org/kali kali-rolling InRelease
Connection failed [IP: 192.98.200.112 80]
Reading package lists... Done
W: Failed to fetch
http://http.kali.org/kali/dists/kali-rolling/InRelease Connection failed [IP: 192.99.200.113 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.
and when i want to install any tool appear to me
apt-get install armitage
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package armitage
please fix it