Cannot access WebEx meeting over Web Gateway SSL Scanner

技術的な記事 ID: KB62664
最終更新: 10/21/2021

環境

McAfee Web Gateway (MWG)

問題

You get a WebEx Meeting Manager notification similar to the following when you try to access a WebEx meeting over Web Gateway SSL Scanner:

You are no longer connected to the meeting.....

原因

It is not possible to access or attend a WebEx meeting when SSL Scanning is enabled on Web Gateway.

The reason is because SSL Scanning breaks into the encrypted traffic. WebEx encapsulates their proprietary protocol (which is not HTTP traffic) inside HTTPS. So, when the WebEx HTTPS traffic gets broken into by Web Gateway, it breaks the connection because Web Gateway expects HTTP traffic.

解決策

Add a bypass to your SSL Scanner.

Add a McAfee Managed list to your Subscribed lists:
This list contains the list of WebEx IP addresses to add to a bypass of the SSL Scanner. You need to verify that your engine is up-to date. Select your appliance from the list in Configuration and select Manual Engine Update.

Log on to the Web Gateway UI.
Select Policy.
Right-click Subscribed Lists and select Add.
For the name, type Webex IP Ranges.
Select the List content is managed remotely checkbox.
Select the McAfee Maintained List option.
Click Choose.
From Application URL Lists, select Webex IP Ranges.
Click OK and OK again.

Use the list in a rule to bypass the SSL Scanner:

Click Policy and find your SSL Scanner ruleset.
Select the top ruleset, usually SSL Scanner if using the default ruleset.
Click Add Rule, name it SSL Scanner Whitelist, and click Next.
Select If the following criteria is matched.
Click Add and from the drop-down list, select URL/Host Criteria.
1. From the list on the left, select URL.Destination.IP.
2. From the list in the middle, select is in range list.
3. From list on the right, select the list created in the previous set of instructions. In this example, the name is Webex IP Ranges.
Click OK.
Click Next.
For the action, select Stop Rule Set.
Review the summary of the rule for errors and then click Finish.
Click Save Changes at the top right.

以前のドキュメント ID ^(Secured)

3051

影響を受ける製品

Web Gateway 8.1.x
Web Gateway 8.0.x
Web Gateway 7.8

言語:

この記事は、次の言語で表示可能です:

German
English United States
Spanish Spain
French
Italian
Japanese
Korean
Dutch
Portuguese Brasileiro
Chinese Simplified
Chinese Traditional

技術用語集

用語集にある用語をハイライトする

当社の技術用語集を参照してください。

Knowledge Center

Cannot access WebEx meeting over Web Gateway SSL Scanner

環境

問題

原因

解決策

関連情報

以前のドキュメント ID ^(Secured)

影響を受ける製品

言語:

技術用語集

Title

Title

Knowledge Center

Cannot access WebEx meeting over Web Gateway SSL Scanner

環境

問題

原因

解決策

関連情報

以前のドキュメント ID (Secured)

影響を受ける製品

言語:

技術用語集

地域を選択してください

Title

Title

以前のドキュメント ID ^(Secured)