{"id":4192,"date":"2026-06-08T18:00:19","date_gmt":"2026-06-08T15:00:19","guid":{"rendered":"https:\/\/support.withsecure.com\/en\/?post_type=support_article&p=4192"},"modified":"2026-06-08T18:00:19","modified_gmt":"2026-06-08T15:00:19","slug":"internet-gatekeeper-blocksor-slowdown-some-sites","status":"publish","type":"support_article","link":"https:\/\/support.withsecure.com\/en\/support-articles\/internet-gatekeeper-blocksor-slowdown-some-sites\/","title":{"rendered":"Internet Gatekeeper blocks(or slowdown) some sites"},"content":{"rendered":"

Issue:<\/h3>\n

Internet Gatekeeper blocks(or slowdown) some specific web sites, although other web site are no problem.<\/p>\n

Resolution:<\/h3>\n

When specific web sites are blocked(or slowdown) through Internet gatekeeper, Internet Gatekeeper needs to be configured as below.
\u00a0<\/p>\n

HTTP\/1.0 requests relayed by the\u00a0<\/font><\/font>Internet Gatekeeper may not be processed due to the setting of the destination Web server, etc., such as when there is a problem with connection only when accessing a specific Web site, although it does not occur with other Web site access I will.<\/font><\/font><\/p>\n

\u00a0<\/p>\n

In cases where such a version of HTTP is a problem, there is a possibility that improvement can be expected by trying the following procedure.<\/font><\/font><\/p>\n

1.) Set use_http11 = yes for Linux gateway expert option (default: no setting)<\/p>\n

By default, the Linux gateway converts to HTTP \/ 1.0 for HTTP \/ 1.1 requests and sends it to the server, but there is a possibility that improvement can be expected by using the HTTP \/ 1.1 transparent function by the following procedure.<\/font><\/font><\/p>\n

In addition, since this feature has been improved from time to time by version upgrade, we recommend you update to the latest version.<\/font><\/font><\/p>\n

\u00a0<\/p>\n

Insert a description of use_http 11 = yes in the entry of [http] in\u00a0<\/font><installation directory>\u00a0\/conf\/fsigk.ini<\/font><\/font><\/p>\n

\nuse_http 11 = yes<\/pre>\n
Then, please restart the HTTP proxy process.<\/font><\/font><\/p>\n
\n# <Installation directory> \/rc.fsigk_http restart\n<\/pre>\n
\u00a0<\/p>\n
\u00a0<\/p>\n
2.) Change settings on the Windows browser side.<\/font><\/font><\/p>\n
Exclude the check box for the Internet Options Advanced tab "Use HTTP 1.1" "Use HTTP 1.1 for proxy connection".\u00a0<\/font>Please restart the browser after setting.<\/font><\/font><\/p>\n
\u00a0<\/p>\n
3.) Set keepalive = yes setting of Linux gateway to no.<\/font><\/font><\/p>\n
After that, to reflect the setting<\/font><\/font><\/p>\n
\n# <Installation directory> \/rc.fsigk_http restart<\/pre>\n
\u00a0<\/p>\n
Please restart the HTTP proxy process.<\/font><\/font><\/p>\n
\u00a0<\/p>\n
4.) Add ipv6 = no setting to the Linux gateway.<\/font><\/font><\/p>\n
\u3000(It is set not to perform name resolution in IPV 6)<\/font><\/font><\/p>\n
<Installation directory> \/conf\/fsigk.ini<\/font><\/font><\/p>\n
\n[http]\n\nipv6 = no<\/pre>\n
\u00a0<\/p>\n
After that, please restart the HTTP proxy process.<\/font><\/font><\/p>\n
\n# <Installation directory> \/rc.fsigk_http restart\n<\/pre>\n
\u00a0<\/p>\n
####For connection problems, various factors such as server load, Ethernet MTU value, name resolution failure, etc. can be considered, so strictly specify the cause by collecting packet log etc.<\/font><\/font><\/p>\n
* The normal installation directory is \/opt\/f-secure\/ fsigk.<\/font><\/font><\/p>\n","protected":false},"excerpt":{"rendered":"
Internet Gatekeeper blocks(or slowdown) some sites<\/p>\n","protected":false},"template":"","support_article_product":[106],"class_list":["post-4192","support_article","type-support_article","status-publish","hentry"],"acf":{"source_foreign_id":"000004974","source_version":3,"source_system":"salesforce","source_date_updated":"2026-06-08 15:00:19","import_hash":"ddb258ff88d17349d0518323f1f177fe47590807","vanilla_article_id":31204,"vanilla_url":"https:\/\/community.withsecure.com\/en\/kb\/articles\/31204-internet-gatekeeper-blocksor-slowdown-some-sites","vanilla_kb_id":30,"vanilla_category_id":103,"machine_translated":false,"reactions_helpful_yes":0,"reactions_helpful_no":0},"_links":{"self":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article\/4192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article"}],"about":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/types\/support_article"}],"wp:attachment":[{"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/media?parent=4192"}],"wp:term":[{"taxonomy":"support_article_product","embeddable":true,"href":"https:\/\/support.withsecure.com\/en\/wp-json\/wp\/v2\/support_article_product?post=4192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}