diff --git a/management/web_update.py b/management/web_update.py
index 78f86f4c..66340619 100644
--- a/management/web_update.py
+++ b/management/web_update.py
@@ -158,9 +158,23 @@ def make_domain_config(domain, templates, ssl_certificates, env):
 
 			# any proxy or redirect here?
 			for path, url in yaml.get("proxies", {}).items():
+				# Parse some flags in the fragment of the URL.
+				pass_http_host_header = False
+				m = re.search("#(.*)$", url)
+				if m:
+					for flag in m.group(1).split(","):
+						if flag == "pass-http-host":
+							pass_http_host_header = True
+					url = re.sub("#(.*)$", "", url)
+
 				nginx_conf_extra += "\tlocation %s {" % path
 				nginx_conf_extra += "\n\t\tproxy_pass %s;" % url
+				if pass_http_host_header:
+					nginx_conf_extra += "\n\t\tproxy_set_header Host $http_host;"
 				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;"
+				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-Host $http_host;"
+				nginx_conf_extra += "\n\t\tproxy_set_header X-Forwarded-Proto $scheme;"
+				nginx_conf_extra += "\n\t\tproxy_set_header X-Real-IP $remote_addr;"
 				nginx_conf_extra += "\n\t}\n"
 			for path, alias in yaml.get("aliases", {}).items():
 				nginx_conf_extra += "\tlocation %s {" % path