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Re: Squid Reverse Proxy to Exchange 2010 OWA

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This is mine against 2008. haven't had any issues with attachments up to 10M


cache_peer 127.0.0.1 parent 443 0 proxy-only no-query no-digest
originserver login=PASS ssl sslflags=DONT_VERIFY_PEER
sslcert=/etc/httpd/conf.d/o.crt sslkey=/etc/httpd/conf.d/o.key
name=webServer
cache_peer 10.32.69.11 parent 443 0 proxy-only no-query no-digest
originserver login=PASS front-end-https=on ssl
sslflags=DONT_VERIFY_PEER sslcert=/etc/httpd/conf.d/o.crt
sslkey=/etc/httpd/conf.d/o.key name=exchangeServer

# List of acceptable URLs to send to the Exchange server
acl exch_url url_regex -i <o>/exchange
acl exch_url url_regex -i <o>/exchweb
acl exch_url url_regex -i <o>/public
acl exch_url url_regex -i <o>/owa
acl exch_url url_regex -i <o>/ecp
acl exch_url url_regex -i <o>/microsoft-server-activesync
acl exch_url url_regex -i <o>/rpc
acl exch_url url_regex -i <o>/rpcwithcert
acl exch_url url_regex -i <o>/exadmin
acl exch_url url_regex -i <o>/oab

# Send the Exchange URLs to the Exchange server
cache_peer_access exchangeServer allow exch_url

# Send everything else to the Apache
cache_peer_access webServer deny exch_url

# This is to protect Squid
never_direct allow exch_url

# Logging Configuration
redirect_rewrites_host_header off
cache_mem 32 MB
maximum_object_size_in_memory 128 KB
cache_log none
cache_store_log none

access_log /var/log/squid/office-access.log squid
#access_log none
cache_log /var/log/squid/office-cache.log
#cache_log none
pid_filename /var/run/squid-office.pid


# Set the hostname so that we can see Squid in the path (Optional)
visible_hostname <o>
deny_info TCP_RESET all

# ACL - required to allow
#acl all src ALL

# Allow everyone through, internal and external connections
http_access allow all
miss_access allow all

icp_port 0
snmp_port 0

via off

On 11 March 2015 at 15:42, dweimer <dweimer@xxxxxxxxxxx> wrote:
> We have setup Squid as a reverse proxy to Exchange 2010 OWA server we
> thought everything was working OK, but found out that any file attachments
> over 2MB cause a timeout after 5 minutes. I remembered having this issue a
> while back with HTTPS, and it just went away after some updates. Some
> searching found other users posting messages to the Squid mailing list that
> had this issue in particular with OWA. However I never found a fix on any of
> the threads.
>
> Squid is currently running 3.4.11, on FreeBSD 10.1-RELEASE-p5, This occurs
> even when sending the file through the local network passing through the
> reverse proxy. With the slowest link being a 1G.
>
> Below is the relevant parts of the configuration, with some information
> excluded for security
> https_port 10.50.20.12:443 accel defaultsite=... \
>  cert=... \
>  key=... \
>  options=NO_SSLv2:NO_TLSv1:CIPHER_SERVER_PREFERENCE \
>  cipher=RC4:!MD5:!aNULL:!EDH
>
> cache_peer ... parent 443 0 ssl no-query no-digest no-netdb-exchange
> originserver name=owa2010_parent sslcapath=/usr/local/share/certs
> sslflags=DONT_VERIFY_PEER login=PASSTHRU front-end-https=on
>
> We also host sharepoint (certificate is a wildcard certificate) this way as
> well, and I have just verified that it has the same problem. It is served by
> the same https_port line, and a different cache_peer the only difference is
> the IP and it doesn't have the front-end-https option set.
>
> Does anyone have any ideas to check?
>
> is this possibly a cause
> <http://www.squid-cache.org/Doc/config/broken_posts/>?
>
> --
> Thanks,
>    Dean E. Weimer
>    http://www.dweimer.net/
> _______________________________________________
> squid-users mailing list
> squid-users@xxxxxxxxxxxxxxxxxxxxx
> http://lists.squid-cache.org/listinfo/squid-users
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