Need help finding a website connectivity problem
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So it looks to me like the ERL can browse the site?
How else can I check that?
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Here is the sanitized ERL config.
firewall { all-ping enable broadcast-ping disable group { network-group Private_LAN { description "Private LAN Networks" network 10.204.0.0/16 } } ipv6-receive-redirects disable ipv6-src-route disable ip-src-route disable log-martians enable modify PPPoE_OUT { description "TCP clamping" rule 1 { action modify modify { tcp-mss 1452 } protocol tcp tcp { flags SYN } } } name LAN_IN { default-action accept description "Internal network to Internet" rule 10 { action accept description "Allow SMTP to ACIDC01" destination { address 10.1.1.2/32 port 25 } log disable protocol tcp state { established enable invalid disable new enable related enable } } rule 20 { action drop description "Drop All SMTP" destination { port 25 } log enable protocol tcp state { established enable invalid enable new enable related enable } } } name LAN_LOCAL { default-action accept description "Internal network to router" } name PPPoE_IN { default-action drop description "WAN to Internal Networks" rule 10 { action accept state { established enable related enable } } rule 20 { action drop log enable state { invalid enable } } } name PPPoE_LOCAL { default-action drop description "WAN to Router" rule 10 { action accept state { established enable related enable } } rule 20 { action drop log enable state { invalid enable } } rule 50 { action accept description "ICMP 50/m" limit { burst 1 rate 50/minute } log enable protocol icmp } rule 60 { action accept description "Accept OpenVPN Connections" destination { group { address-group ADDRv4_pppoe0 } port 1194 } log disable protocol udp state { established enable invalid disable new enable related enable } } } name Public_WiFi_IN { default-action accept description "Public WiFi to Internet" rule 10 { action accept description "Allow Response from LAN" log disable protocol all state { established enable invalid disable new disable related enable } } rule 20 { action drop description "Block Access to Private Networks" destination { group { network-group Private_LAN } } log enable protocol all } rule 30 { action drop description "Block SMTP" destination { port 25 } log enable protocol tcp } } name Public_WiFi_LOCAL { default-action drop description "Public WiFi to Router" rule 10 { action accept description "Allow DNS" destination { port 53 } log enable protocol udp } rule 50 { action accept description "Allow pings" limit { burst 1 rate 62/minute } log enable protocol icmp } } receive-redirects disable send-redirects enable source-validation disable syn-cookies enable } interfaces { ethernet eth0 { address 10.204.4.9/29 description "WiFi Management" duplex auto firewall { in { name LAN_IN } local { name LAN_LOCAL } } speed auto vif 5 { address 10.204.11.1/24 description "Private WiFi" firewall { in { name LAN_IN } local { name LAN_LOCAL } } } vif 6 { address 10.204.12.1/24 description "Public WiFi" firewall { in { name Public_WiFi_IN } local { name Public_WiFi_LOCAL } } } } ethernet eth1 { address 10.204.10.1/24 description LAN duplex auto firewall { in { name LAN_IN } local { name LAN_LOCAL } } speed auto } ethernet eth2 { description WAN duplex auto pppoe 0 { default-route auto firewall { in { name PPPoE_IN } local { name PPPoE_LOCAL } } mtu 1492 name-server auto password XXXXXXXXXXXXXX traffic-policy { out DSL_up } user-id XXXXXXXXXXXXXX } speed auto } loopback lo { } openvpn vtun0 { description "User OpenVPN Server" encryption aes128 mode server openvpn-option --tls-server openvpn-option "--proto udp" openvpn-option "--port 1194" openvpn-option "--tun-mtu 1400" openvpn-option --persist-key openvpn-option --persist-tun openvpn-option --persist-local-ip openvpn-option --persist-remote-ip openvpn-option "--keepalive 8 30" openvpn-option --comp-lzo openvpn-option --duplicate-cn openvpn-option "--client-cert-not-required --username-as-common-name" openvpn-option "--verb 1" openvpn-option --client-to-client openvpn-option "--user nobody --group nogroup" openvpn-option "--push route 10.204.10.0 255.255.255.0" openvpn-option "--push route 10.204.11.0 255.255.255.0" openvpn-option "--push route 10.204.12.0 255.255.255.0" openvpn-option "--push route 10.204.1.0 255.255.255.0" openvpn-option "--push route 10.204.5.0 255.255.255.0" openvpn-option "--push route 10.204.6.0 255.255.255.0" openvpn-option "--push redirect-gateway def1" openvpn-option "--push dhcp-option DNS 10.1.1.2" openvpn-option "--push dhcp-option DNS 10.204.10.1" openvpn-option "--plugin /usr/lib/openvpn/openvpn-plugin-auth-pam.so login" server { subnet 10.204.13.0/24 topology subnet } tls { ca-cert-file /config/auth/openvpn/keys/XXXXXXXXXXXXXX.crt cert-file /config/auth/openvpn/keys/XXXXXXXXXXXXXX.crt dh-file /config/auth/openvpn/keys/XXXXXXXXXXXXXX.pem key-file /config/auth/openvpn/keys/XXXXXXXXXXXXXX.key } } openvpn vtun5 { description "XXXXXXXXXXXXXX to Jared" local-address 10.204.9.5 { } local-port 1201 mode site-to-site openvpn-option --comp-lzo openvpn-option "--tun-mtu 1472" remote-address 10.204.9.6 remote-host jared.bundystl.com remote-port 1201 shared-secret-key-file /config/auth/XXXXXXXXXXXXXX } openvpn vtun10 { description "XXXXXXXXXXXXXX to XXXXXXXXXXXXXX" local-address 10.204.9.2 { } local-port 1195 mode site-to-site openvpn-option --comp-lzo openvpn-option "--tun-mtu 1464" remote-address 10.204.9.1 remote-host vpn.XXXXXXXXXXXXXX.com remote-port 1195 shared-secret-key-file /config/auth/XXXXXXXXXXXXXX } } protocols { static { interface-route 10.1.1.0/24 { next-hop-interface vtun10 { } } interface-route 10.204.1.0/24 { next-hop-interface vtun10 { } } interface-route 10.204.5.0/24 { next-hop-interface vtun10 { } } interface-route 10.204.6.0/24 { next-hop-interface vtun10 { } } interface-route 10.254.103.0/24 { next-hop-interface vtun5 { } } interface-route 10.254.203.0/24 { next-hop-interface vtun5 { } } } } service { dhcp-server { disabled false hostfile-update enable shared-network-name XXXXXXXXXXXXXX_LAN { authoritative disable subnet 10.204.10.0/24 { default-router 10.204.10.1 dns-server 10.1.1.2 domain-name XXXXXXXXXXXXXX.local lease 86400 start 10.204.10.50 { stop 10.204.10.254 } static-mapping NPID5FA4B { ip-address 10.204.10.11 mac-address 2c:59:e5:d5:fa:4b } } } shared-network-name Private_WiFi { authoritative disable subnet 10.204.11.0/24 { default-router 10.204.11.1 dns-server 10.1.1.2 dns-server 10.204.11.1 lease 86400 start 10.204.11.10 { stop 10.204.11.254 } } } shared-network-name Public_WiFi { authoritative disable subnet 10.204.12.0/24 { default-router 10.204.12.1 dns-server 10.204.12.1 lease 3600 start 10.204.12.10 { stop 10.204.12.254 } } } shared-network-name WiFi_Management { authoritative disable subnet 10.204.4.8/29 { default-router 10.204.4.9 dns-server 10.204.10.1 lease 86400 start 10.204.4.10 { stop 10.204.4.14 } unifi-controller 207.244.223.13 } } } dns { dynamic { interface pppoe0 { service afraid { host-name XXXXXXXXXXXXXX login XXXXXXXXXXXXXX password XXXXXXXXXXXXXX } } } forwarding { cache-size 150 listen-on eth0 listen-on eth0.5 listen-on eth0.6 listen-on eth1 listen-on vtun0 system } } gui { https-port 443 listen-address 10.204.10.1 } nat { rule 5010 { log disable outbound-interface pppoe0 protocol all type masquerade } } snmp { community public { authorization ro } } ssh { listen-address 10.204.10.1 port 22 protocol-version v2 } upnp { listen-on eth0 { outbound-interface pppoe0 } listen-on eth1 { outbound-interface pppoe0 } } } system { domain-name XXXXXXXXXXXXXX.local host-name XXXXXXXXXXXXXX login { user XXXXXXXXXXXXXX { authentication { encrypted-password XXXXXXXXXXXXXX plaintext-password "" } full-name "ACI Administrator" level admin } } name-server 10.1.1.2 name-server 8.8.8.8 name-server 8.8.4.4 ntp { server 0.ubnt.pool.ntp.org { } server 1.ubnt.pool.ntp.org { } server 2.ubnt.pool.ntp.org { } server 3.ubnt.pool.ntp.org { } } offload { ipv4 { forwarding enable pppoe enable vlan enable } } syslog { global { facility all { level notice } facility protocols { level debug } } } time-zone America/Chicago traffic-analysis { dpi enable export enable } } traffic-policy { shaper DSL_up { bandwidth 700kbit class 10 { bandwidth 75% burst 15k ceiling 100% description "DSL up RTP Traffic" match IAX2 { ip { destination { port 4569 } } } match RTP { ip { dscp 46 } } match RTP-IPv6 { ipv6 { dscp 46 } } queue-type fair-queue } class 20 { bandwidth 5% burst 15k ceiling 100% description "DSL up SIP Traffic" match ICMP { ip { protocol ICMP } } match SIP { ip { dscp 26 } } match SIP-IPv6 { ipv6 { dscp 26 } } queue-type fair-queue } default { bandwidth 20% burst 15k ceiling 100% queue-type fair-queue } } } /* Warning: Do not remove the following line. */ /* === vyatta-config-version: "config-management@1:conntrack@1:cron@1:dhcp-relay@1:dhcp-server@4:firewall@5:ipsec@4:nat@3:qos@1:quagga@2:system@4:ubnt-pptp@1:ubnt-util@1:vrrp@1:webgui@1:webproxy@1:zone-policy@1" === */ /* Release version: v1.7.0.4783374.150622.1534 */ -
for giggles have you tried changing dns on a workstation there to google or open dns and see if anything changes?
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Drop the MTU from 1492 to 1484 then 1476. See if it works then.
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@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
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@hubtechagain said:
for giggles have you tried changing dns on a workstation there to google or open dns and see if anything changes?
DNS is properly resolving and the same at both sites (on SBS) so I don't see any way that could help.
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@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
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@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
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@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
Time for class folks.
We know the site is up and running, as we can access it via other places. We know it's on Azure because of the trace. The trace tells us another interesting tidbit though. I'm wondering if anyone can see it.
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@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
And the drop in 8's is because it's a base8 world. The MTU is the size of the packet in bytes. Odd byte numbers make for a bad time.
Which brings another item. Does anyone know why I went straight for MTU?
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It is PPPoE which impacts the MTU. but there is a firewall rule in place that has been there for a year and supposedly it was working, up until a week or so ago.
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@PSX_Defector said:
@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
And the drop in 8's is because it's a base8 world. The MTU is the size of the packet in bytes. Odd byte numbers make for a bad time.
Which brings another item. Does anyone know why I went straight for MTU?
I had this thread on the MTU subject 2 weeks ago.
http://mangolassi.it/topic/7118/a-little-confused-on-openvpn-mtu
I made no changes on the pppoe interface though. so I would not know why it would have been a cause (if it is).
I looked at a config backup from July and it is the same for pppoe being 1492
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@PSX_Defector said:
@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
And the drop in 8's is because it's a base8 world. The MTU is the size of the packet in bytes. Odd byte numbers make for a bad time.
Which brings another item. Does anyone know why I went straight for MTU?
Because it is DSL and DSL is generally PPPoE which takes up another 8 bytes?
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When you use the wizard to setup PPPoE on an ERL is automatically creates this firewall rule and applies it to the out of the PPPoE
modify PPPoE_OUT { description "TCP clamping" rule 1 { action modify modify { tcp-mss 1452 } protocol tcp tcp { flags SYN } } } ethernet eth2 { description WAN duplex auto pppoe 0 { default-route auto firewall { in { name PPPoE_IN } local { name PPPoE_LOCAL } out { modify PPPoE_OUT } } mtu 1492 name-server auto password user-id } speed auto } -
@PSX_Defector said:
@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
Time for class folks.
We know the site is up and running, as we can access it via other places. We know it's on Azure because of the trace. The trace tells us another interesting tidbit though. I'm wondering if anyone can see it.
my thought was it was odd that a hop inside the ISP network did not reply. Microsoft not replying is expected.
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@Jason said:
@PSX_Defector said:
@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
Time for class folks.
We know the site is up and running, as we can access it via other places. We know it's on Azure because of the trace. The trace tells us another interesting tidbit though. I'm wondering if anyone can see it.
my thought was it was odd that a hop inside the ISP network did not reply. Microsoft not replying is expected.
I was concerned about the 10.X.X.X showing in a trace. The site is on 10.204.10.0/24 and I have routes across VPN tunnels to 10.1.1.0/24, a few 10.204.X.0/24 and 10.254.103.0/24 as well.
But the site on the other end of that VPN tunnel also has all that and works fine.
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But bundystl.com is hosted on Azure and if you look at it directly (bundystl.azurewebsites.net), instead of via CloudFlare, it works just fine from on the client site.
it has the same trace results.
https://i.imgur.com/OX3y3Zs.jpg -
@PSX_Defector setting the MTU down to 1476 makes no difference in the pages loading.
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@JaredBusch said:
@Jason said:
@PSX_Defector said:
@art_of_shred said:
@PSX_Defector said:
@Jason said:
@PSX_Defector said:
Drop the MTU from 1492 to 1484 then 1476. See if it works then.
That's what I was thinking.
The question is, do you know why?
I don't, but I'd like to. Why the "8" drops?
Time for class folks.
We know the site is up and running, as we can access it via other places. We know it's on Azure because of the trace. The trace tells us another interesting tidbit though. I'm wondering if anyone can see it.
my thought was it was odd that a hop inside the ISP network did not reply. Microsoft not replying is expected.
I was concerned about the 10.X.X.X showing in a trace. The site is on 10.204.10.0/24 and I have routes across VPN tunnels to 10.1.1.0/24, a few 10.204.X.0/24 and 10.254.103.0/24 as well.
But the site on the other end of that VPN tunnel also has all that and works fine.
Ahh, the plot thickens!
I thought it was strange that I couldn't get the same trace, but since you mention that, it makes more sense. The reason I say something about MTU is that I know there is sometimes fun when attempting to access certain sites if they are behind carrier NAT. Remember when SBC flipped over some PoPs to NAT for various stuff between BRAS and edge? I saw wacky routes, slow sites, all kinds of things. Most of it was because idiots were double NAT'ed. But on occasion, I would find a site that would not work without the MTU being 1500.
Now with the VPN tunnel tidbit, we need to make sure we are good. I thought it might have been a problem, but I didn't see it in your screenshots. The scope should be sufficiently small enough to not encompass any of the hops you are hitting. But I would double check that.
This is why I use 172.16.0.0/24 on my network at home. I never see funny shit like this.
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/wtb someone else on CenturyTel to test with.
