Pac File Bypass Proxy For Local Addresses
Who fancies helping me with this one then.This happens across the site, however it has only just clicked into place the potential issue which has been plaguing me.Several users use Outlook, including myself, to access Office 365 which isn't unreasonable.Several of us, including myself, occaisionally have long delays when logging into our Mailbox, looking at the connection status in Outlook, it is taking a long time to connect to the severs.The cause, for whatever reason, is the proxy configuration which makes no sense to me at all. The default setup currently for staff is to use an Autoconfiguration script in order to go through a specific proxy to grant access to Youtube.
If this is used then Outlook works without issue most of the time, connecting and opening quickly. If you alter the setup not to use the Autoconfiguration script, which we need to do sometimes because the proxy we use does something weird to some websites requiring logins meaning they don't work, and set it to use a specific proxy then all of a sudden Outlook takes an age to connect to Office 365. This is regardless of the specific proxy server you configure it to use, even if it's configured to use the same one the autoconfig script points to (CLEO NED), Smoothwall or straight out to the Cumbria one.Any hints as to what the heck is going?
Pac File Bypass Proxy Server For Local Addresses
I know a few people in Lancashire who have experienced this such as @. I don't know how they have resolved it or if they have but they seem to think its due to the firewall configuration at County.
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(One Connect). One of the NM has seem to suggest to me that it works fine at home and they issues exist inside the cleo network.This is what confused me, just remembered cumbria have their own Pac file too.No matter which pac file I use, the CLEO/One Connect or Cumbria (Can't make my smoothwall one work for some reason, but that's me not getting smoothwall somewhere along the line) it works instantly (nearly, not faultless) everytime. The issue only rears it's head if I tell it to use the proxy directly. If it was firewall related, surely it would still occur using the pac file?I wonder if it is an Outlook issue.Edit: Fixed my Smoothwall pac, it works instantly as well when configured to use that. Just noticed this thread, we had problems originally with outlook losing its connection to the servers for about 10 - 15 seconds, then it would reconnect. We also had an issue with OWA timing out as well. We had many conversations since November last year when we first set Office 365 up.
In the end we took the big step to change our broadband supplier, since the new connection went in over the summer holidays, we've had no problems what so ever. I use outlook every day and it doesn't drop at all, our staff and students that use OWA have no problems at all either.Best move we ever made was moving broadband away from one connect. I can't remember why I have it ticked now (just assumed you needed it), what am I going to lose by unticking it?Potentially loss of access to printer web based interfaces, espresso (if you have the expresso box, rather than accessing their website) or other local based websites. If your proxy is within your building it is likely this access will still work anyway but just via the proxy. If your proxy is 'cloud based' ie, segfl. Where it is hosted at RM, it will either fail (if you have a strict firewall configuration) or still work but go all the way out and back over your broadband.
Potentially loss of access to printer web based interfaces, espresso (if you have the expresso box, rather than accessing their website) or other local based websites. If your proxy is within your building it is likely this access will still work anyway but just via the proxy. If your proxy is 'cloud based' ie, segfl. Where it is hosted at RM, it will either fail (if you have a strict firewall configuration) or still work but go all the way out and back over your broadband.Spotted that soon after I posted.Nearly everything is listed in the Bypass proxy exceptions, I just need to make sure it's all listed and then I'm away.Can't tell you how much this has made me day (shows what sort of time I'm having at the moment!).
FYI, have been in discussions with Microsoft on this today. MS engineer response to our Microsoft Premier Support case:The behavior is considered by design and it is addressed in Critical Design Change Request.We have scheduled a fix for Outlook 2010 in February 2014 cumulative update.
This article is about the browser file. For other uses, see.A proxy auto-config ( PAC) file defines how and other can automatically choose the appropriate (access method) for fetching a given.A PAC file contains a FindProxyForURL(url, host). This function returns a string with one or more access method specifications. These specifications cause the user agent to use a particular proxy server or to connect directly.Multiple specifications provide a fall-back when a proxy fails to respond. The browser fetches this PAC file before requesting other URLs. The URL of the PAC file is either configured manually or determined automatically by the. Contents.Context Modern web browsers implement several levels of automation; users can choose the level that is appropriate to their needs.
The following methods are commonly implemented:. Automatic proxy selection: Specify a host-name and a port number to be used for all URLs. Most browsers allow you to specify a list of domains (such as localhost) that will bypass this proxy. Proxy auto-configuration (PAC): Specify the URL for a PAC file with a JavaScript function that determines the appropriate proxy for each URL.
Pac File Https Proxy
This method is more suitable for laptop users who need several different proxy configurations, or complex corporate setups with many different proxies. (WPAD): Let the browser guess the location of the PAC file through and lookups.The PAC File The Proxy auto-config file format was originally designed by in 1996 for the and is a that defines at least one JavaScript function, FindProxyForURL(url, host), with two arguments: url is the URL of the object and host is the host-name derived from that URL. Syntactically it is the same string as between:// and the first: or / after that.By convention, the PAC file is normally named proxy.pac. The uses wpad.dat.To use it, a PAC file is published to a, and client user agents are instructed to use it, either by entering the URL in the proxy connection settings of the browser or through the use of the WPAD protocol. The URL may also reference a local file as for example: file:///etc/proxy.pac.Even though most clients will process the script regardless of the returned in the, for the sake of completeness and to maximize compatibility, the HTTP server should be configured to declare the MIME type of this file to be either application/x-ns-proxy-autoconfig or application/x-javascript-config.There is little evidence to favor the use of one MIME type over the other. It would be, however, reasonable to assume that application/x-ns-proxy-autoconfig will be supported in more clients than application/x-javascript-config as it was defined in the original Netscape specification, the latter type coming into use more recently.A very simple example of a PAC file is. If ( isInNet ( host, dnsResolve ( sampledomain ), '255.255.248.0' )) //.NET 2.0 will resolve proxy properly if ( isInNet ( host, sampledomain, '255.255.248.0' )) //.NET 2.0 will not resolve proxy properlyThe current convention is to fail over to direct connection when a PAC file is unavailable.Shortly after switching between network configurations (e.g.
When entering or leaving a VPN), dnsResolve may give outdated results due to DNS caching.For instance, Firefox usually keeps 20 domain entries cached for 60 seconds. This may be configured via the network.dnsCacheEntries and network.dnsCacheExpiration configuration variables. Flushing the system's may also help, which can be achieved e.g. In Linux with sudo service dns-clean start or in Windows with ipconfig /flushdns.On Internet Explorer 9, isInNet('localHostName', 'second.ip', '255.255.255.255') returns true and can be used as a workaround.The myIpAddress function assumes that the device has a single IPv4 address. The results are undefined if the device has more than one IPv4 address or has IPv6 addresses.Others Further limitations are related to the on the local machine.Advanced functionality More advanced PAC files can reduce load on proxies, perform load balancing, fail over, or even / before the request is sent through the network.One can return multiple proxies.