I'm not sure I understand the problem you're reporting.
I assume you are behind a firewall and use a proxy for web access (HTTP, HTTPS, FTP etc).
NTP cannot use a web proxy, but it works just fine behind a firewall provided the firewall allows UDP packets to leave and NAT's the replies.
I'm not sure I understand the problem you're reporting.
I assume you are behind a firewall and use a proxy for web access (HTTP, HTTPS, FTP etc).
NTP cannot use a web proxy, but it works just fine behind a firewall provided the firewall allows UDP packets to leave and NAT's the replies.