Cannot access https://services.ird.govt.nz from our 2degrees fibre network, but can from other networks

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#2121896 7-Nov-2018 23:42

I'm accessing https://services.ird.govt.nz/irsso/newlogin?id=rightnav via fibre connection right now - Are you using our DNS servers or someone else's? What are you using as a router? Since you are a business customer are you using a managed service device?

https://nick.mackechnie.co.nz | NZ ISP latency monitoring - https://smokeping.thenet.gen.nz

dvanwijk

10 posts

Wannabe Geek

#2121897 7-Nov-2018 23:54

fe31nz:

Your traceroute is pretty similar to mine, so I do not see any problem there:

[D:\]tracert services.ird.govt.nz

Tracing route to services.ir1.ird.govt.nz [222.153.202.43]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms erl.jsw.gen.nz [10.0.1.251]
2 1 ms 1 ms 1 ms 104.7.69.111.static.snap.net.nz [111.69.7.104]
3 14 ms 14 ms 13 ms 38.27.69.111.static.snap.net.nz [111.69.27.38]
4 13 ms 13 ms 13 ms 39.27.69.111.static.snap.net.nz [111.69.27.39]
5 14 ms 14 ms 14 ms ae9-44.akcr11.global-gateway.net.nz [122.56.127.209]
6 14 ms 14 ms 14 ms mdr-ip24-dom.msc.global-gateway.net.nz [122.56.116.10]
7 15 ms 15 ms 15 ms 222-153-223-166.sparkdigital.co.nz [222.153.223.166]
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * ^C

The sparkdigital.co.nz routers seem to be blocking the traceroute, but I can connect fine to https://services.ird.govt.nz/irsso/newlogin?id=rightnav.

Tracetcp on the https port gets through all the way, as expected:

[d:\]tracetcp.exe services.ird.govt.nz:https

Tracing route to 222.153.202.43 on port 443
Over a maximum of 30 hops.
1 2 ms 1 ms 1 ms 10.0.1.251 [erl.jsw.gen.nz]
2 3 ms 15 ms 2 ms 111.69.7.104 [104.7.69.111.static.snap.net.nz]
3 16 ms 56 ms 15 ms 111.69.27.38 [38.27.69.111.static.snap.net.nz]
4 20 ms 14 ms 15 ms 111.69.27.39 [39.27.69.111.static.snap.net.nz]
5 20 ms 17 ms 15 ms 122.56.127.33 [ae9-42.akcr11.global-gateway.net.nz]
6 15 ms 15 ms 15 ms 122.56.116.10 [mdr-ip24-dom.msc.global-gateway.net.nz]
7 16 ms 15 ms 16 ms 222.153.223.166 [222-153-223-166.sparkdigital.co.nz]
8 Destination Reached in 16 ms. Connection established to 222.153.202.43
Trace Complete.

Tracetcp is available from here: http://simulatedsimian.github.io/tracetcp.html

I've just tried the tracetcp and cannot get through, but you can.

C:\tracetcp_v1.0.3>tracetcp.exe services.ird.govt.nz:https

Tracing route to 222.153.202.43 on port 443
Over a maximum of 30 hops.
1 2 ms 1 ms 1 ms 192.168.60.1
2 3 ms 2 ms 19 ms 111.69.1.254 [111-69-1-254.core.snap.net.nz]
3 21 ms 44 ms 19 ms 111.69.27.38 [38.27.69.111.static.snap.net.nz
]
4 21 ms 19 ms 21 ms 111.69.27.39 [39.27.69.111.static.snap.net.nz
]
5 20 ms 19 ms 29 ms 122.56.127.33 [ae9-42.akcr11.global-gateway.ne
t.nz]
6 19 ms 23 ms 22 ms 122.56.116.10 [mdr-ip24-dom.msc.global-gateway
.net.nz]
7 30 ms 81 ms 19 ms 222.153.223.166 [222-153-223-166.sparkdigital.co
.nz]
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.
Trace Complete.

C:\tracetcp_v1.0.3>

dvanwijk

10 posts

Wannabe Geek

#2121898 7-Nov-2018 23:57

yitz: Is your router secured properly, why can I see a Mikrotik login page.

Good question. I believed it was secured properly but maybe not. The web ui should be disabled for external traffic. I'll get that looked at.

dvanwijk

10 posts

Wannabe Geek

#2121901 8-Nov-2018 00:00

NickMack: I'm accessing https://services.ird.govt.nz/irsso/newlogin?id=rightnav via fibre connection right now - Are you using our DNS servers or someone else's? What are you using as a router? Since you are a business customer are you using a managed service device?

DNS on router (Mikrotik RB2011) is set to 2degrees DNS (I think)...

118.148.1.10

118.148.1.20

Are these correct?

The router is not managed. We get IT to deal with issues as they arise. We own the router.

dvanwijk

10 posts

Wannabe Geek

#2121903 8-Nov-2018 00:03

lxsw20:

Yeah, what router are you using, is it doing any sort of L7 filtering or anything?

No L7 filtering

Kraven

738 posts

Ultimate Geek
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#2121912 8-Nov-2018 06:20

Given the web interface on the Mikrotik was exposed I would be highly suspect of something in the config on there causing your issue. Do you have another router you can test with?

Issues like this with HTTPS are usually caused by MTU or TCP MSS being set incorrectly somewhere, testing with another router would quickly confirm this.

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NickMack

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#2121931 8-Nov-2018 08:21

dvanwijk:

NickMack: I'm accessing https://services.ird.govt.nz/irsso/newlogin?id=rightnav via fibre connection right now - Are you using our DNS servers or someone else's? What are you using as a router? Since you are a business customer are you using a managed service device?

DNS on router (Mikrotik RB2011) is set to 2degrees DNS (I think)...

118.148.1.10

118.148.1.20

Are these correct?

The router is not managed. We get IT to deal with issues as they arise. We own the router.

please update DNS to 202.37.101.1, 202.37.101.2, 202.37.101.3

https://nick.mackechnie.co.nz | NZ ISP latency monitoring - https://smokeping.thenet.gen.nz

NickMack

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#2121932 8-Nov-2018 08:22

Kraven: Given the web interface on the Mikrotik was exposed I would be highly suspect of something in the config on there causing your issue. Do you have another router you can test with?

Issues like this with HTTPS are usually caused by MTU or TCP MSS being set incorrectly somewhere, testing with another router would quickly confirm this.

Based on the information supplied,I concur - I can access the ird website from multiple points on our network.

https://nick.mackechnie.co.nz | NZ ISP latency monitoring - https://smokeping.thenet.gen.nz

Aredwood

3885 posts

Uber Geek
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#2121936 8-Nov-2018 08:34

Those above linked IRD webpages work just fine on my 2degrees fibre connection. And I have a static IP as well.

Some earlier versions of Mikrotik firmware have security problems.

Paging @Sbiddle as he would be able to sort out your router, or would know someone who can.

chevrolux

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#2121937 8-Nov-2018 08:35

NickMack:

dvanwijk:

NickMack: I'm accessing https://services.ird.govt.nz/irsso/newlogin?id=rightnav via fibre connection right now - Are you using our DNS servers or someone else's? What are you using as a router? Since you are a business customer are you using a managed service device?

DNS on router (Mikrotik RB2011) is set to 2degrees DNS (I think)...

118.148.1.10

118.148.1.20

Are these correct?

The router is not managed. We get IT to deal with issues as they arise. We own the router.

please update DNS to 202.37.101.1, 202.37.101.2, 202.37.101.3

/interface pppoe-client name="whatever your pppoe interfce to snap is" use-peer-dns=yes

And then make sure your MTU is set correctly across the pppoe interface and ethernet interface.

fe31nz

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#2122465 8-Nov-2018 22:37

dvanwijk:

I've just tried the tracetcp and cannot get through, but you can.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\tracetcp_v1.0.3>tracetcp.exe services.ird.govt.nz:https

Tracing route to 222.153.202.43 on port 443
Over a maximum of 30 hops.
1 2 ms 1 ms 1 ms 192.168.60.1
2 3 ms 2 ms 19 ms 111.69.1.254 [111-69-1-254.core.snap.net.nz]
3 21 ms 44 ms 19 ms 111.69.27.38 [38.27.69.111.static.snap.net.nz
]
4 21 ms 19 ms 21 ms 111.69.27.39 [39.27.69.111.static.snap.net.nz
]
5 20 ms 19 ms 29 ms 122.56.127.33 [ae9-42.akcr11.global-gateway.ne
t.nz]
6 19 ms 23 ms 22 ms 122.56.116.10 [mdr-ip24-dom.msc.global-gateway
.net.nz]
7 30 ms 81 ms 19 ms 222.153.223.166 [222-153-223-166.sparkdigital.co
.nz]
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 * * * Request timed out.
17 * * * Request timed out.
18 * * * Request timed out.
19 * * * Request timed out.
20 * * * Request timed out.
21 * * * Request timed out.
22 * * * Request timed out.
23 * * * Request timed out.
24 * * * Request timed out.
25 * * * Request timed out.
26 * * * Request timed out.
27 * * * Request timed out.
28 * * * Request timed out.
29 * * * Request timed out.
30 * * * Request timed out.
Trace Complete.

C:\tracetcp_v1.0.3>

That suggests that the 222.153.202.43 device is blocking your specific IP address for some reason. The rest of us can get through, but you can not. It would be worthwhile running Wireshark to see if you are receiving any ICMP packets from 222.153.202.* that might tell you why you are being blocked.

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sbiddle

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#2122470 8-Nov-2018 22:55

If you were running a vulnerable version of routeros it's highly likely to have been compromised.

Wouldn't surprise me if this issue could be a hacked router with the SOCKS proxy set which is sending all your traffic offsite.

sbiddle

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#2122471 8-Nov-2018 22:55

vulcannz

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Ultimate Geek
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#2122530 9-Nov-2018 08:39

fe31nz:

That suggests that the 222.153.202.43 device is blocking your specific IP address for some reason. The rest of us can get through, but you can not. It would be worthwhile running Wireshark to see if you are receiving any ICMP packets from 222.153.202.* that might tell you why you are being blocked.

Just because you cannot ping something doesn't mean you cannot get to it. Standard security practice is to turn off ICMP responses for internet facing servers/devices unless there is a specific requirement for it. Note that other peoples tracerts end at the same hop.

Mattmannz

471 posts

Ultimate Geek
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#2122537 9-Nov-2018 08:49

I had this exact issue for a client on a different ISP. Couldn't sign in to E Services on the IRD site.

We also use the same ISP and had no issues, could use a proxy on the client end and connect okay so it appeared to be something at the IRD end.

Tried logging a fault with IRD, not actually possible to log this as an issue as it doesn't appear as a category in their system. It was informally passed through to IRD IT but nothing progressed. Many many follow up calls and I finally got a contact person in IT who I could deal with.

Turned out that the client was part of a shared office and other tenants had been accessing the IRD sites and had triggered a "suspicious" activity alert at the IRD end and the address was blocked. No warning or logging from the IRD end.

Matt.

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