Weird LAN behaviour - LAN to internet
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Thanks. Most of this is above my pay grade and trying to learn as much as I can to get the box working as I want.
Took some time to realize that the wifi was still connecting even though the Wicd network manager was only saying wired connection - would have helped if Id looked at ifconfig full results rather than just eth0As it stands, (wired connection to LAN, wifii off) seems no matter how I fiddle with the rules there is nothing coming in on a browser page, though ipcm pings are ok from the linux client and from within the pfsense ping window
The vlans and openvpn are all working as they should - just the LAN that wont play
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well "lan" default rules are any any - did you mess with that?... Can you ping pfsense lan IP? What is the clients route table when only connected the lan... You have pfsense set as your gateway?
What is being handed out for dns when only on the wired lan?
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OK – A bit confused here and apologies for my lack of understanding, but can ping to 10.0.0.10 which is the webconfig addresss
Can ping to say 9.9.9.9 form client linux pc wired to LAN.
And also from inside pfsense ping window
dhcp on psfense giving addesses as setLAN rules have been set the same as rules in the VLAN20 (OPENVPN) subnet as I wanted the same results (could be totally screwed up her thru a lack of understanding)
Removing all those rules and just having allow all to all makes no difference except it stops ping from my linux client pc – which I didn’t understand as I thought all meant everything?Getting routes for igb1 (LAN interface) not set as gateway – default gateway as set by pfsense
Unsure what client route table was unless its
Destination Gateway Flags Use Mtu Netif Expire
10.0.0.0/24 link#2 U 656 1500 igb1Additionally, was not sure how to see “What is being handed out for dns when only on the wired lan?”
Another strange thing, when connected to an windows7 PC still no web pages but windows reports the connection has internet - so could some ports or protocol be blocked? Tho 80 and 443 are allowed ports. And the subnets and ports are fine on the VPN subnet -
there should be a default route..
Your on linux right? what does netstat -rn show?
root@uc:/tmp# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 0.0.0.0 192.168.2.253 0.0.0.0 UG 0 0 0 ens3 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 ens3 root@uc:/tmp#windows would be
route print from cmd lineas to what your using for dns.. you can normally look in /etc/resolv.conf
are you using the network manager gui? It should show you what using.
As to your rules not sure what you then think that vpn_wan2 address is ever going to be a source of traffic into your lan interface
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The dns is from the isp provider either comcast or the VPN not set on the connection cant seem to get it to respond to a set dns in pfense setup
I thought the vpn_wan2 address rule would route the lan thru the VPN - but as I said am out of my depth here
netstat.....user@user-ThinkPad-T410 ~ $ netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 0.0.0.0 10.0.0.10 0.0.0.0 UG 0 0 0 eth0 10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 user@user-ThinkPad-T410 ~ $ -
If you can ping 9.9.9.9 from the client then the routes are good.
That 'wan out' rule is almost certainly wrong on the LAN interface. You should never see traffic sourced from the VPN_WAN2 address arrive at the LAN interface.
The only rule that can pass a connection to a general website in the unlabelled rule. That is passing everything via the VPN gateway. There are no states shown on it though. It looks like no traffic is hitting that.
Steve
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not sure why you would have that 169.254 address there.. APIPA??? you shouldn't have that - but its not going to hurt anything.
But don't see any hits on your rules going anywhere..
Are you running pfblocker? That runs a vip on your lan and can mess with your ! rule you have their with the local subnets that should allow access out to the internet... But its forcing traffic out your vpn.
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@stephenw10
Thanks
Ive disabled all the rules on LAN except lockout and a new rule IvP4 allow all to all
ping still gets reply but no other sign of internet via wired LAN (with client VPN disabled and running same result)
I did notice when connected to windows7 which I have\ dual boot with linux that windows reports there in an internet connection tho no web pages are avaialble. -
@johnpoz
Thanks, Ive no idea where the 192.254 is coming from - it only appears when wired LAN connected, nothing visible in network settings manager.Not running pfblocker or any addon (gave upon pfblocker on an other Atom 2.4g box as it seemed to be causing the cpu to run at between 80-100% and couldn't find a fix)
With no rules other than anitlockout and a pass all to all rule on LAN no webpages are getting thru but ICMP is fine
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Are you running proxy?
Those 169.254 can often show up when you have set for dhcp but don't get an address..
Does any box on your wired lan work? Do you see devices in your dhcp lease table on your lan? Do you have any floating rules?
Your rules are forcing traffic out your vpn!! Do you see hits on the rules? What does your outbound nat look like if your trying to send traffic out a vpn.
Why don't you make your rules any any - default out of the box on lan... And now do something as simple as a wget on your linux box to say www.google.com... Does it grab anyway.
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No, no proxy
wget via lan is not resolved - I'm thinking its a dns issue on the lan
perhaps the dns resolver and forwarder settings for the vlans, which I think prevent dns lookup when the vpn is down is preventing dns resolving on the lan.
From inside pfsense the dns lookup is ok and comes from the settings in general setupI'm trying to recreate this https://nguvu.org/pfsense/pfsense-baseline-setup/ but there is no lan in the description.
Is there a way to give the lan dns servers without affecting anything else? That is, if that's the issue as the vlans work well.
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out of the box pfsense resolver will listen on all interfaces... But your rules don't even allow your client to talk to pfsense - since your shoving everything out your vpn!
Remove that policy route.. And allow for lan to talk to pfsense lan IP tcp/udp port 53 Directly query pfsense lan IP for something.. Does it resolve?
use dig or host or nslookup on your client - pointing directly to pfsense lan IP.
Well maybe you do - but you have alias for both source and dest on the rule that might allow it.
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Thanks for all of the help!
I changed the lan interface nic assignment just in case it had some problem (no idea if that's a possibility as icmp was running ok but anyways things seemed intermittent - sometimes ping to google.com was resolved then ping to say bbc.co.uk was not resolved and no names were found - all the time ping to number address worked -.9.9.9.9. for eg.
Ping and dns lookup always work from inside the pfsense box.Removed all rules on lan except allow all to all - rebooted a few times, changed cables - restarted client pc and set new connection to run
And.... the thing came to life with www available.
Thanks again this forum is a great resource!! -
Hmm, well always slightly disappointing not to find a definite problem but I'm glad you got it up and running.
Steve
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It was quire odd as I'd tried all the removing rules on LAN except all to all before and got nowhere.
Had just thought that maybe the connection on my linux client might have been the problem as Ive just noticed a dns tab which I had set to auto on the working connection. And the dns servers set in general on pfsense were listed. Previously it was off - I have no idea if anything needs to be set on a linux cable connection to get to www pages, I just assumed it just took whatever was sent from the router box as seemed to be the case with my last router (asus68u) which was really slow at vpn - speeds are 3x faster on this, which was the reason to change. I"m still thinking it was some failure of dns, however that might happen.
Anways, its good to know one can get help when needed _thanks again! -
Final note on this problem......
Using linux mint 18.3 client to check pfsense setup
what I found was the ethernet connection to pfsense was very fussy on how it was set - I wasted so much time hunting for errors on the pfsense box when it was the connection which was at fault - If set to the subnet address of 10.0.20.16 and auto dns for eg there was no internet, even though the connection looked ok ( not really sure what was going on here but thinking the dns was not getting in/out) pings to number addresses ok named not found.
If set to dchp and auto dns the connection was good and things worked as they should.
Things got very confusing when setting thre cisco sg3500 switch too as that would not show its webconfig without being set to a fixed ip.
The moral here is check the function of the connection before attempting to change the pfsense settings! -
@fin1000 said in Weird LAN behaviour - LAN to internet:
what I found was the ethernet connection to pfsense was very fussy on how it was set
huh?? What is there to set.. Just leave it in auto... The only thing you should be doing on an interface in pfsense is settings its ip to be honest..
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Hmm, that sounds a lot like something has a bad subnet mask set.
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Ive no idea having very little understanding of networking "black magic"
But have had many problems over the years with connections failing to connect and the "connecting" icon "churning" until it times out. Which then leads to messing with settings to see if it can be connected. Try a fixed address in the right range - which normally connects but then there is nothing visible at the other end.
sudo ip route flush cache, sudo ip route flush table main, sudo iptables -F did seem to allow a connection to start BUT im still in the dark as to why sometimes ethernet wont connect. -
@fin1000 said in Weird LAN behaviour - LAN to internet:
Ive no idea having very little understanding of networking "black magic"
WTF are you running pfsense and sg350 switches then???
You shouldn't be setting static IPs if your dhcp is not working you should fix the dhcp issue!
I have been using ethernet from day one... Back in the thick and thinnet days... Vampire connections and bnc... Way before rj45 and cat level cables..
Sounds like you have trouble at layer 1 if you ask me if your having issues with stuff connecting or stuff like the basics of dhcp to even work. Maybe you have bad cables - are you making your own? Or buy prefab?
