WPAD Setup help [Solved]
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updated first post, do not know what to try next.
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updated first post, do not know what to try next.
Ouch :o meaning we have to read it again and guess how it differs from initial post, then for those discovering this thread, they may find answers meaningless if initial post changed significantly.
IMHO, this is more confusing than helpful except if you managed to heavily comment what was written before and how it changed. -
it was more of a clean up
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Reading your first post again:
1 - you could easily maintain one single file and create symlink
2 - I'm not sure you can push multiple "DHCP option 252" values :(
3 - your proxy.pac file states:- if there is no domain extension (no FQDN but host only)
- or if FQDN belongs to "local" domain (is it really your domain name ?)
- OR if IP I tray to reach belongs to my LAN
then go DIRECT (without proxy)
Is it what you target?
4 - I don't understand
Can connect to the internet (local ips are inaccessible, filtering works)
???
5 - would you mind replacing "cannot connect to internet" with something clearer like the error message you receive?
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it was more of a clean up
Sure, I did notice but if your read the whole thread again as if you were discovering it, posts after your initial post are totally meaningless isn't it? ::)
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Let's try something basic:
Using Firefox (let's focus on on browser for the time being)
- using "automatic proxy detect for this network" option, it doesn't work (although error message would be more than welcome here)
- using manual proxy configuration (192.168.1.1 port 3128), it works and as there is no option for local IPs, these local servers can't be reached (still I don't understand why => this would mean that proxy can access or can't resolve such URL)
- using "Automatic proxy configuration URL" option: this is not clear to me whether it works or not.
I also have the feeling that there is something unclear with your DNS: I'm very confused with error/warning message about DNS forwarder and port 80 ??? ???
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Hi all, I have time again to try and get the wpad working.
I think I am starting to get my head around this.
This is where i am at
pfsense is using the wpad files but with issues.with this wpad example the issue is local address are blocked
function FindProxyForURL(url,host) { return "PROXY 192.168.1.1:3128"; }
to solve this we use this to allow local addressed
function FindProxyForURL(url, host) { if (isPlainHostName(host) || shExpMatch(host, "*.local") || isInNet(dnsResolve(host), "192.168.1.0", "255.255.255.0")) return "DIRECT"; return "PROXY 192.168.1.1:3128"; }
With this
- sites in the squardguard blacklist are blocked with the squidguard error message (this is good)
- navigating to normal sites have major issue, some only half load, some do not load at all.
Getting very close to solving this, i think it could be the wpad code.
Anyone have any ideas?
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Like with my previous reply, I think it deserves clearer message: what does "with this wpad example the issue is local address are blocked" mean?
Is it "blocked" because not found, time-out, not authorized by proxy?What you are describing shows that your WPAD set-up is working as expected:
- without any specific rule, everything goes thorough proxy, including internal targets but internal servers can't be reached via proxy (this I don't know yet why)
- if you set-up proxy.pac to do direct for internal servers, you can reach it.
Thus issue is definitely not with WPAD, IMHO 8)
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Hi chris4916 I will try to be more clear with the current issue I have.
The wpad (goal is to allow local sites to bypass the proxy but make all external sites to go through the proxy)
function FindProxyForURL(url, host) { if (isPlainHostName(host) || shExpMatch(host, "*.local") || isInNet(dnsResolve(host), "192.168.1.0", "255.255.255.0")) return "DIRECT"; return "PROXY 192.168.1.1:3128"; }
Current status
pfsense is now passing the wpad onto the browsers (chrome and ie for now through the DNS forwarder).http://www.lagado.com/proxy-test shows that the browsers are connected through a proxy (good)
sites in the squidguard blocklist are being blocked for both http and https connections (good)
Current issue
Normal websites (sites which are not blocked form squidguard) are not loading correctly (Images are missing, layout is not fully loaded and some sites do not load at all)."with this wpad example the issue is local address are blocked" mean?
I was just outlining that if you use that example wpad from https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid that local addresses are blocked and by blocked i mean I get a proxy error (can't remember what the error was).What you are describing shows that your WPAD set-up is working as expected
That is correct the WPAD is now working (however now have another issue with webpages not loading correctly)if you set-up proxy.pac to do direct for internal servers, you can reach it.
I can reach them now by using the following wpadfunction FindProxyForURL(url, host) { if (isPlainHostName(host) || shExpMatch(host, "*.local") || isInNet(dnsResolve(host), "192.168.1.0", "255.255.255.0")) return "DIRECT"; return "PROXY 192.168.1.1:3128"; }
Let me know if I need to expand on anything
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That's clearer (I hope :))
So your current issue has nothing to do with WPAD but with proxy (Squid) that is not loading pages as expected (or Squidguard blocking some parts of these pages)
Did you look at squid log content already?Keep in mind that quite often web pages as you see it through your browser are built from different sources.
I would suggest that you perform some tests without any Squidguard rules or even Squid ACL, just to ensure that from HTTP standpoint, everything is OK btween your browser and external web servers, then introduce Squid ACL if needed and Squidguard rules so that you can, perhaps, determine, what's wrong here. -
I have updated the first post, I now use the strikethrough to show old settings. Very strange issue this is now, squidguard is not showing any blocked items for non blocked sites and even if I turn it off or allow all to squidguard I get the same issue (sites not loading correctly, missing content, not loading at all AND very very slow webpage loading times).
Stuck atm (I wounder if it is squid3 that is the issue);
Any ideas on what I should try next?
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I have updated the first post, I now use the strikethrough to show old settings.
From personal viewpoint, this is not something I use to do because it makes next posts most of the time out of context.
Very strange issue this is now, squidguard is not showing any blocked items for non blocked sites and even if I turn it off or allow all to squidguard I get the same issue (sites not loading correctly, missing content, not loading at all AND very very slow webpage loading times).
Stuck atm (I wounder if it is squid3 that is the issue);
I'm not using Squid on pfSense but reading various threads here and there, it looks like there is a significant amount of problems with Squid on pfSense 2.x
At least, you have clarified that Squidguard is not the issue here, neither WPAD ;)
Now you could perhaps focus on Squid logs… -
reinstalled squid gui components, cleared the cache (one the user computers and squids cache), and now it works :)
Will test it for a few days to see how i go.
;D
[Update]
If i have no issues with it i will write up a how to -
I just want to update something here.
if you are having issues with webpages only half loading (which is what I had), then you must first delete your squid cache then it should fix that issue. -
if you are having issues with webpages only half loading
This can also by symptomatic of an IP6/IP4 preference issue with dual-stack sites.
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Hi all,
I found an issue where some programs have an issue with the global "automatically detect settings" option (some programs with this issue do not even have a proxy setting setup page) and still want to go through port 80 (I think this could also be what is causing downthemall to only connect to 1 segment because when I open port 80 I can connect to more segments).
So sometimes I have to reopen port 80 to let the traffic through temporary.
I read somewhere that a NAT rule could be created to catch any leftover traffic going to port 80 and redirect it to port 3128.
Tired playing around with a NAT rule
LAN - TCP - LAN address - 80 - WAN address - 80 - 192.168.1.1 - 3128
And in rules i put it at the top.However the traffic is not redirected.
Tested with a troubled program using- no proxy
- automatically detect settings
- And even setting the proxy setting with the port set to 80
Any thoughts on this?
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2. Disable DNS ResolverUpdated needs to be on3.Configure DNS Service
add new Host OverridesHost: wpad Domain: mylocaldomain.local IP Address: 192.168.1.1 Description: WPAD Autoconfigure Host
save
Updated change Listen Port to 3128
Enable DNS forwarder
saveQuick question, for clarification on the above quote, please:
I currently have DNS Resolver off and DNS forwarder on with the above Host Override configured on the DNS Forwarder.Which one did you apply the Host Override configuration?
Which one did you change to listen on port 3128 (same as Squid3, unless you changed that. I don't think you did, based on your proxy.pac code).
I add the Firewall rules for blocking HTTP and HTTPS and I can't load internet pages. I can still get to local servers. Nothing's being filtered by Squidguard. Or, at least, it's not showing up in the logs. Wondering if that's my problem now.
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It is the DNS forwarder that needs the Host Override configuration.
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2. Disable DNS ResolverUpdated needs to be on3.Configure DNS Service
add new Host OverridesHost: wpad Domain: mylocaldomain.local IP Address: 192.168.1.1 Description: WPAD Autoconfigure Host
save
Updated change Listen Port to 3128
Enable DNS forwarder
saveQuick question, for clarification on the above quote, please:
I currently have DNS Resolver off and DNS forwarder on with the above Host Override configured on the DNS Forwarder.Which one did you apply the Host Override configuration?
Which one did you change to listen on port 3128 (same as Squid3, unless you changed that. I don't think you did, based on your proxy.pac code).
I add the Firewall rules for blocking HTTP and HTTPS and I can't load internet pages. I can still get to local servers. Nothing's being filtered by Squidguard. Or, at least, it's not showing up in the logs. Wondering if that's my problem now.
I'm also wondering do I put listen to 3128 in DNS Forwarder or in DNS Resolver?
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I'm also wondering do I put listen to 3128 in DNS Forwarder or in DNS Resolver?
see above post :)
And while I am here, there is an issue that remains with this setup is that programs that have no proxy settings and want to connect directly will get blocked by the port 80 rule.
If someone has any advice on how to solve this i'll update the first post.
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If someone has any advice on how to solve this i'll update the first post.
Add a firewall rule(s) to allow specified LAN IPs to connect to specified destination IPs via 80. Put it above the HTTP/S block. Use an alias to hold the LAN IPs of your clients that have apps that don't support proxy, and an alias to hold all the IPs of the servers they need to talk to. That's it.
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and an alias to hold all the IPs of the servers they need to talk to
The problem is first finding the server that they need to talk to, then updating that rule when they change it. If the destination server is dynamic then you will never know the destination server.
But I guess that is all we can do.
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But I guess that is all we can do.
Them's the breaks.
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2. Disable DNS ResolverUpdated needs to be on3.Configure DNS Service
add new Host OverridesHost: wpad Domain: mylocaldomain.local IP Address: 192.168.1.1 Description: WPAD Autoconfigure Host
save
Updated change Listen Port to 3128
Enable DNS forwarder
saveThis is working on my machine but I will like to know if you can help me understand why do you need to enable DNS forwarder and set listening port to 3128. I have pfsense 2.2.4 DNS Resolver is enable by default and DNS forwarder is disable. I have created the host override on DNS resolver for it to work and enable DNS Forwarder service on port 3128.
Also why do you need the host override if dhcp is configured with the ip address and not a domain name? I will appreciate if you help me understand this.
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Hi enrique.perezrul
Hmm some hard questions there, will do my best, lets start with reading from the wiki
https://doc.pfsense.org/index.php/WPAD_Autoconfigure_for_Squid
WPAD will take the domain name given to the machine, likely assigned by DHCP, and prepend wpad.. If the domain is example.com, it will look for wpad.example.com. This task may be accomplished with the DNS Forwarder/DNS Resolver in pfSense or with another internal DNS server used by client PCs.
why do you need to enable DNS forwarder
Because you need to create a Host Override for the wpad.
…set listening port to 3128
Because I wanted to use port 53 for the DNS Resolver (Will need to look more into why I used port 3128)
Also why do you need the host override if dhcp is configured with the ip address and not a domain name
Some web browsers use DNS to configure them others use dhcp so both are needed.
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Looking for a well documented guide or video to help configure wpad. Do any exist?
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Looking for a well documented guide or video to help configure wpad. Do any exist?
With this Post i configurate WPAD, but if you have problems, create your own post. Problems never are the same.
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Looking for a well documented guide or video to help configure wpad. Do any exist?
Look at the post above yours, specifically the link to WPAD Autoconfigure for Squid.
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I've checked that out but it's quite vague. For example, I run vlans on pfsense. My guest network is 10.0.0.0/24 and my home lan is 192.168.2.0/24.
In the wpad file what do I need to specify as the proxy address? I have configured pfsense such that guest vlan cannot access home vlan and vice versa. As I do not have a separate box I will have to host the wpad on the pfsense box.
function FindProxyForURL(url,host)
{return "PROXY 192.168.2.1:3128"; What does this need to be to support both vlans?
} -
try this
function FindProxyForURL(url, host) { if (isPlainHostName(host) || shExpMatch(host, "*.local") || isInNet(dnsResolve(host), "192.168.1.0", "255.255.255.0")) return "DIRECT"; return "PROXY 192.168.1.1:3128"; }
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In the wpad file what do I need to specify as the proxy address?
Whatever the IP address is of the interface that Squid is listening on. Usually your LAN NIC.
I have configured pfsense such that guest vlan cannot access home vlan and vice versa.
Add a firewall rule above your vlan blocks that allows the guest vlan to talk to squid.
As I do not have a separate box I will have to host the wpad on the pfsense box.
So do that then. I host wpad.dat and proxy.pac on my pfSense box. Note that it won't work if you have WebGUI running in HTTPS mode.
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Is there a command or configuration page to see what interface squid is listening on? As mentioned previously I have vlans running. The default LAN is disabled.
Vlan10 is admin
Vlan20 is guest
Vlan30 is homeI configured squid to bind to vlan20 and vlan30.
You mention that if WebGUI is running over https I cannot host the proxy.pac. Can this be overcome by changing the port from 443 to 444?
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Is there a command or configuration page to see what interface squid is listening on?
Services - Proxy server - General. What's the very first thing you see, starting at the top?
Can this be overcome by changing the port from 443 to 444?
I don't think so. It's not the port that's the problem, it's the protocol.
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Is there a command or configuration page to see what interface squid is listening on? As mentioned previously I have vlans running. The default LAN is disabled.
…http://findproxyforurl.com/pac-functions/ <- shows some Function to that.
Try this. Where 192.168.0.0 is your network that you want to have direct access.
function FindProxyForURL(url,host){ if (isInNet(myIpAddress(), "192.168.0.1", "255.255.255.0")) return DIRECT; return "PROXY 192.168.10.10:3128"; }
Or Services >> Proxy Server >> General >> Proxy interface(s) and choose your Networks
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@KOM:
Is there a command or configuration page to see what interface squid is listening on?
Services - Proxy server - General. What's the very first thing you see, starting at the top?
Proxy interfaces shows:
Home -> "for reference only" (192.168.2.0/24)
Guest -> "for reference only" (10.0.0.0/24)So back to my original question regarding the wpad file. Does the "return PROXY" statement need to point to the Home, Guest or both interfaces? I want both subnets going through the proxy.
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I am trying to configure wpad and am testing it out but haven't got it working.
I have configured the following discovery file:
[2.2.4-RELEASE][root@pfSense.localdomain]/root: cat /usr/local/www/wpad/proxy.pac FindProxyForURL(url,host) { if(isPlainHostName(host)) { return "DIRECT"; } if(isInNet(host,"127.0.0.1","255.255.255.0")) { return "DIRECT"; } return "PROXY 10.0.3.1:3128"; }
ls -la
-rw-r–r-- 1 root wheel 200 Sep 19 17:01 proxy.pac
lrwxr-xr-x 1 root wheel 9 Sep 19 15:06 wpad.da -> proxy.pac
lrwxr-xr-x 1 root wheel 9 Sep 19 15:05 wpad.dat -> proxy.pacI copied and made some changed to lighttpd configuration file and put it in /usr/local/www/wpad. The changes I made were:
server.document-root = "/usr/local/www/wpad/"
server.errorlog = "/var/log/lighty-proxy-wpad.log"Added file types:
".dat" => "application/x-ns-proxy-autoconfig",
".da" => "application/x-ns-proxy-autoconfig",
".pac" => "application/x-ns-proxy-autoconfig",server.bind = "10.0.3.1"
server.port = 80Verified it worked by starting second lighttpd instance:
[2.2.4-RELEASE][root@pfSense.localdomain]/usr/local/www/wpad: ps aux | grep -i "lighttpd"
root 26067 0.0 0.2 13152 6012 - S 4:08PM 0:00.86 /usr/local/sbin/lighttpd -f /var/etc/lighty-webConfigurator.conf
root 45296 0.0 0.2 13152 4968 - S 5:32PM 0:00.02 /usr/local/sbin/lighttpd -f /usr/local/www/wpad/lighty-proxy-wpad.confI created a hosts override option in DNS Fowarder, configured necessary settings in dhcp "bootp/dhcp" section.
I am able to browse in firefox to 10.0.3.1/wpad and wpad.localdomain/wpad.dat. However, nslookup on wpad.localdomain doesnt work. Not sure if it needs to. I can ping it though.
I have squid3 installed. Its bound to Guest Interface (10.0.3.0/24) on port 3128. Allow users on this interface enabled. Transparent HTTP Proxy is Disabled and so is SSL MiTM. In ACLs tab I entered: 10.0.3.0/24
For testing purposes, I have crated a fw rule that allows anything from this network to pass so I can get internet. When I put in the proxy auto configure url in firefox the internet no longer works.
Any suggestions? This process is very frustrating
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I am able to browse in firefox to 10.0.3.1/wpad and wpad.localdomain/wpad.dat. However, nslookup on wpad.localdomain doesnt work. Not sure if it needs to. I can ping it though.
I'm not sure your browser will try to load any wpad.* file but rather proxy.* file
WPAD acronym covers the auto discovery stuff while proy.pac (or .dat) describes browser behaviour: what is accessed directly (i.e. local files) vs. what must be accessed through proxy.
If you can resolve this name, I wonder how you can browse it ???
In order not to face all potential problems together, I would suggest, once your proxy.pac file is ready, to test it by manually configuring your browser to load this page. This bypasses the discovery step en ensures, if it works ;), that proxy.pac behaves as expected.
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I understand how wpad works. I was making sure I had access to it. In FF I have specified http://wpad.syndicate.com/wpad.dat in the Automatic Proxy Configuration URL. It's not working as I am not getting any once doing so. I look at the squid logs and do not see anything from that network. So apparently it's not going through. I don't know where to start troubleshooting from.
I've simplified the proxy.pac to:
FindProxyForURL(url,host) { return "PROXY 10.0.3.1:3128"; }
Don't believe it should be this complicated
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I look at the squid logs and do not see anything from that network.
Before looking at Squid log, you should start with web server side.
If you don't see any access to thsi web server (for this page), no surprise if it doesn't work.
Of course, this means that, from your browser, you can resolve this URL ;) -
try
http://pfsense.syndicate.com/wpad.dat
Go through post 1 again, let me know how it went.