Help with Multiple WAN setup.

hoba · Mar 6, 2007, 2:19 PM

Just create pass a firewallrule at LAN for protocol tcp, source any, destination any, port https, gateway <name of="" your="" failoverpool="">. This way all https will only go out one single gateway and stay there.

Failoverpools are just like loadbalancingpools but they won't do doundrobin of every new connection to the next link in the pool. Instead they will always use only the most top in the list available link and failover to the next one in the list if one of the top links fail. You create the failoverpools and use them exactly the same way like the loadbalancing pools. It's just an option when you edit/create a pool.

Already established states will remain at the same gateway as long as they don't time out or are closed. This means tracerouting to a specific IP will keep at the same gateway till the state gets closed or times out.</name>

leimrod · Mar 6, 2007, 2:45 PM

Ok I implemented what you said but it doesn't seem to be working for HTTPs. I can get access to HTTPS only when I bybass pfSense.

I've attached some screenshots below of my firewall rules, NAT setup and loaf balancer rules.

sai · Mar 6, 2007, 3:45 PM

to get https to work you need a LAN rule:

LAN
source ip: LAN net
source port: any
dest ip: any
dest port: HTTPS
gateway: netfailoverdray

This needs to be the first rule.

Your lan fw rules: only the first one will ever be used as it is the first and will match anything coming out of the LAN net. Second rule will never be matched because of this

You do not need the two failover pools - just one will do. netfailoverdray or drayfailovernet.

Check if your DNS works if one interface dies.

leimrod · Mar 6, 2007, 3:58 PM

@sai:

to get https to work you need a LAN rule:

LAN
source ip: LAN net
source port: any
dest ip: any
dest port: HTTPS
gateway: netfailoverdray

This needs to be the first rule.

Your lan fw rules: only the first one will ever be used as it is the first and will match anything coming out of the LAN net. Second rule will never be matched because of this

You do not need the two failover pools - just one will do. netfailoverdray or drayfailovernet.

Check if your DNS works if one interface dies.

Ok i've attached a screenshot of it set as the first rule, it is set exactly as you outlined. One question does this rule allow access for other HTTPS ports such as 22, 444, 3389 and 8443?

Also, should I delete the first rule in lan_fwrules? The one set as

Proto Source Port Destination Port Gateway
TCP LAN net * * 443 (HTTPS) NetFailoverDray

I still can't get access to the HTTPS site though, it has a port extension of 8443. Also how would I go about testing the port is correctly allowing HTTPS connections?

EDIT: Just wondering, do I need to do any sort of port forwarding in my NAT setup to allow HTTPS connections?

jeroen234 · Mar 6, 2007, 7:47 PM

if you need port 8443 then you need to make a rule for that port
https is only port 443
port 22 btw is ssh not https

leimrod · Mar 7, 2007, 10:29 AM

Just as a note, should I be opening all my ports on my router and setting its firewall to off and using only pfSense as the firewall and port forwarder?

When I set up any LAN rule for a port it doesn't seem to be working (i.e. I can't access HTTPS, FTP etc) What would be causing these ports to be blocked?

leimrod · Mar 7, 2007, 4:04 PM

Is there any guides in pfSense on what the most common ports are and how I should go about opening them for external and internal access

hoba · Mar 7, 2007, 4:20 PM

Leimrod, I think you have some basic misunderstanding atm how the firewall of pfSense works. I'll try to sum it up a bit:

Firewallrules will always be applied to incoming traffic at an interface. This means if you allow access from lan to any that connections that have been initiated from lan will create a state that accepts trafic for the reverse connection of this traffic as well. No need to open something up at wan for this. You only need to open up ports and forward ports at WAN if you offer services to the public like hosting a webserver for example.

Now to your https problem: the default port for https is 443 (like noted in the webgui as well when selecting https). As your https destination uses a different port (8443) just duplicate the rule that you already have for https and change the destination port to 8443 to take care of this "special setting" as well.

It looks like you use some gatewayrouters in front of you. The easiest way to set them up and forget about them is to set the pfSense WAN IP and pfSense OPT-WAN IP as DMZ hosts in these routers (might also be called expedited host or similiar). This way they will just forard any traffic to the pfSense and you don't have to touch them anymore if you need to create rules and forwards for incoming traffic.

leimrod · Mar 7, 2007, 5:50 PM

Would it accomplish the same thing if I set up an alias in firewall and set it to ports 22, 443, 444, 3389, 8443? That way as I want to add ports I could just add them to the alias instead of creating a seperate rule for each port?

hoba · Mar 7, 2007, 5:58 PM

This will work fine. Just use a portsalias. That's the mainreason behind the alias system, to reduce the amount of rules and make them more readable and allow easier editing.

leimrod · Mar 7, 2007, 6:10 PM

Would this work for getting access to external FTP servers also? If I just add port 21 into that alias should I get FTP access also?

hoba · Mar 7, 2007, 6:17 PM

ftp is different and special as this protocol simply sucks. It needs an ftphelper through NAT and is not multiwan capable. ftp connections will run on the original WAN always. On top you have to add a rule at firewall>rules, lan tab on top of all your rules: "pass protocol any, source any, destination 127.0.0.1, gateway default" to exclude the traffic through the proxy from balancing.

leimrod · Mar 8, 2007, 11:22 AM

this is really getting frustrating now. I can't see any reason why FTP isn't working. I set up the LAN rule as you said, and i've enabled the FTP helper under "interfaces>WAN>FTP helper"

When you say set the destination to 127.0.0.1, should that be of type "network" and CIDR /24? Also you didn't mention, but where should I be opening the FTP port in this rule, at the source or the destination, or do I not need to?

I also have rules set up in in Firewall>NAT>Port forward and set it to autocreate rules in firewall>Rules>WAN, i've attached screenshots of these.

EDIT: I did a quick check in my "diagnostics>show states" and when I try to make an ftp connection i'm getting these errors

tcp 127.0.0.1:8021 <- 80.79.129.2:21 <- 192.165.0.30:2077 CLOSED:SYN_SENT
tcp 127.0.0.1:8021 <- 80.79.129.2:21 <- 192.165.0.30:2078 CLOSED:SYN_SENT
tcp 127.0.0.1:8021 <- 80.79.129.8:21 <- 192.165.0.30:2079 CLOSED:SYN_SENT

Do you have any idea what could be causing this?

hoba · Mar 8, 2007, 1:31 PM

ftphelper has to be enabled at interfaces>lan (it is by default) and not on interfaces>wan (this is only needed if you provide ftp services to the public). The rule to destination 127.0.0.1 (single host or alias) has to be created on top of the lan firewallrules.

leimrod · Mar 8, 2007, 1:44 PM

hoba, I have to thank you for your help with this.

I changed the rule to "single host or alias", do I need to change the port range anywhere to FTP? I've also attached a screenshot of my "Interfaces>LAN" tab to show that the ftphelper is enabled (its enabled when there ISNT a tick in the box right?)

So just so i'm clear, for FTP to work with load balancing. I need this LAN rule, FTP enabled at the LAN interface and also a rule in my NAT>Port forward for FTP, with "Auto-add a firewall rule" enabled. Is this correct?

I found this recent mail thread which seems to say that FTP does not work at all for load balancing in pfSense, has this since been changed?

hoba · Mar 8, 2007, 2:04 PM

Your screenshots look ok now. Does it work? If not please upgrade to the latest snapshot. there was some ftp logic changed one day ago.

The mail just states that it can't make use of loadbalancing but it will work on multiwansetups using only WAN for ftp-ing.

leimrod · Mar 8, 2007, 3:35 PM

Ok that REALLY scared me. I updated to the latest firmware update and I lost all access to the internet, when I checked on the pfSense main page it was telling me it was using version 1.0.1 from the 29th October 2006. Lucky for me i'd kept a copy of the 28th February update, when I updated back to the original again I got internet access back.

I think there might be something wrong with the latest snapshot, it appears to be one of the original 1.0.1 releases rather than an update.

Also, and this is very weird, before I updated I couldn't get FTP access at all, now that i'm back using the same version as before I now have FTP access??? Nothing has changed, I just updated to the same version i've been using all along,

sullrich · Mar 8, 2007, 3:45 PM

You have to redo any load balancing queues after updating as the format has changed.

leimrod · Mar 8, 2007, 4:04 PM

@sullrich:

You have to redo any load balancing queues after updating as the format has changed.

What do you mean? All my load balancing and firewall rules are still in place and the load balancing is still working, the "status>RRD Graphs" show that the traffic is still going out over both connections

EDIT: Also my HTTPs is working now as well? Very weird. Btw I have no rules set up in Firewall>NAT (neither portforward, 1:1 or outbound) for FTP or HTTPs is this normal? Also another thing i'm noticing, when i'm downloading just one torrent it is using BOTH WAN connections? I know this is happening because my download speed is over 6Mb/s, which is greater than either of the WAN connections on their own. I thought this wasn't possible?

hoba · Mar 8, 2007, 8:04 PM

I have some homework for you. Search the forum and the available docs. This thread has already 5 pages and you are asking still questions that have already been covered in this thread or the docs that have been posted. No offense but the answers are all there already.