Results 1 to 4 of 4

Thread: Slow work after block port 80

  1. #1
    GlooM is offline Active Member
    Join Date
    Nov 2009
    Location
    Moscow, Russia
    Posts
    40
    Rep Power
    5

    Question Slow work after block port 80

    Hello.

    I am use Zimbra OSE 8.0.2.
    On this server I've set up "https only" access mode. In our company we have 2 groups of users: first group with internet access; second - without internet, but with access to internal corporate resourses. Firewall rules for second group of users include block any activity to port 80 (http protocol). As I say, zimbra server works on https (443 port), but we have problem with users from second group (80 block, but 443 on zimbra server accept). This problem is slow work (zimbra authorization page and sending emails from web-interface) in comparison with users at which the port 80 is open. Why blocking of port 80 creates problems if the server works at port 443?

  2. #2
    kruon is offline Loyal Member
    Join Date
    Jul 2009
    Location
    Jyväskylä, Finland
    Posts
    83
    Rep Power
    6

    Default

    Create another firewall rule and explicitly allow traffic from office network to zimbra host on port 80, place it on higher priority than the block 80 rule in firewall.
    See if that speeds up the login.

  3. #3
    GlooM is offline Active Member
    Join Date
    Nov 2009
    Location
    Moscow, Russia
    Posts
    40
    Rep Power
    5

    Default

    Yes, with additional firewall rule with opening port 80 to zimbra, login and emails send functioning with normal speed.
    But why zimbra use port 80 (unsecure) if it work on port 443 ?

  4. #4
    kruon is offline Loyal Member
    Join Date
    Jul 2009
    Location
    Jyväskylä, Finland
    Posts
    83
    Rep Power
    6

    Default

    Maybe some zimlets are trying to call port 80?
    You could install Fiddler and trace the connection.
    The trace should show all connections using HTTP rather than HTTPS

    I tested this against 7.x and didn't see any calls using HTTP in the connection with default enabled zimlets.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Web login on port 80 doesn't work
    By slacri in forum Administrators
    Replies: 4
    Last Post: 09-22-2012, 04:50 AM
  2. Web login on port 80 doesn't work
    By slacri in forum Installation
    Replies: 0
    Last Post: 09-22-2012, 03:09 AM
  3. Zimbra Attchment Block & Out Side Mail Sending Block
    By kirtan in forum Administrators
    Replies: 0
    Last Post: 12-22-2011, 12:58 AM
  4. [SOLVED] HTTPS on port 443 - Cannot get it to work
    By samgreco in forum Administrators
    Replies: 6
    Last Post: 08-06-2010, 10:20 PM
  5. Replies: 9
    Last Post: 04-01-2010, 05:33 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •