OpenDNS Not Working With Spectrum Modem

October 23, 2019 18:37

I use Charter Spectrum's internet service and router (SageMCom F@st 5260). I used the DNS names and I still cannot filter out things. When I go into the DNS setup I can put in the DNS names but when I go to the setup page, it doesn't list the DNS names. Do I need a DNS gateway name as well?

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20 comments

rotblitz October 23, 2019 20:27

Post a screenshot of the router page where you configured OpenDNS, so that I see what you did.

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mister-andre October 23, 2019 22:44

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rotblitz October 24, 2019 06:48 (Edited October 29, 2019 17:32)
That’s fine. Now copy & paste the complete plain text output of the following diagnostic commands to here:
```
nslookup -type=txt debug.opendns.com. 
nslookup whoami.akamai.net.
```
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mister-andre October 24, 2019 10:33

NSLOOKUP -TYPE=TXT DEBUG.OPENDNS.COM

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

opendns.com
primary name server = auth1.opendns.com
responsible mail addr = noc.opendns.com
serial = 1571911927
refresh = 16384 (4 hours 33 mins 4 secs)
retry = 2048 (34 mins 8 secs)
expire = 1048576 (12 days 3 hours 16 mins 16 secs)
default TTL = 2560 (42 mins 40 secs)

NSLOOKUP WHOAMI.AKAMAI.NET

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

Name: whoami.akamai.net
Address: 68.114.44.169

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rotblitz October 24, 2019 13:52 (Edited October 24, 2019 13:57)

As can be clearly seen, you are using Charter‘s DNSv6 service, not OpenDNS. You must configure also IPv6 with DNS addresses from the following list:
::ffff:d043:dedc ::ffff:d043:dcde ::ffff:d043:dede ::ffff:d043:dcdc

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mister-andre October 24, 2019 21:52

I don't know where to put those entries. The categories listed for IPv6 on my router are:

Delegated Prefix
Lan IPv6 Address
Wan IPv6 Address
First IPv6 DNS Server
Second IPv6 DNS Server

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rotblitz October 25, 2019 13:46

As this is about DNS, you enter the addresses into the two DNS server fields, of course. What else?

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mister-andre October 25, 2019 17:18

It didn't look right but I put the entries in.

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rotblitz October 25, 2019 21:13 (Edited October 25, 2019 21:25)

This looks fine. Does it filter now?

Howewer, I see you prefer FamilyShield, so change it to
::ffff:d043:de7b ::ffff:d043:dc7b

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mister-andre October 25, 2019 21:34

It looks like it's working now. I had to restart the router for the changes to work. I'll change the DNS stuff and see if it still works.

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mister-andre February 19, 2020 22:35

The filter sometimes takes a while to kick in and it is not showing the OpenDNS "This domain is blocked" message. What I usually get is the following message:

Your connection is not private
Attackers might be trying to steal your information from [DOMAIN]

The current IPV4 DNS addresses are 208.67.222.123 and 208.67.220.123. The current IPV6 DNS addresses are ::ffff:d043:de7b and ::ffff:d043:dc7b.

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rotblitz February 20, 2020 10:23

Yes, that's normal if you block domains of HTTPS sites and didn't download the Cisco Root CA.

See https://support.opendns.com/hc/en-us/articles/227987007

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mister-andre April 24, 2020 09:40

The DNS numbers are on but the filter is not working again. This is what came up from the nslookup commands I ran:

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

opendns.com
primary name server = auth1.opendns.com
responsible mail addr = noc.opendns.com
serial = 1587717664
refresh = 16384 (4 hours 33 mins 4 secs)
retry = 2048 (34 mins 8 secs)
expire = 1048576 (12 days 3 hours 16 mins 16 secs)
default TTL = 2560 (42 mins 40 secs)

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

Name: whoami.akamai.net
Address: 68.114.44.177

Please see the attached screenshots.

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rotblitz April 24, 2020 14:26 (Edited April 24, 2020 14:28)

You're using Charter's DNSv6 service again.

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

As you earlier said "I had to restart the router for the changes to work" it may be that another router restart is necessary now.

Your router configuration looks fine, but the router doesn't seem to do its job, so it is not an OpenDNS problem, but a router problem. If the router restart does not help, you could try with disabling IPv6, or you could contact your router's support.

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mister-andre April 25, 2020 00:52

I restarted the router. Now the issue is that the filter works on my phone but not my laptop.

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rotblitz April 25, 2020 11:09 (Edited April 25, 2020 11:12)

Post the command outputs from this laptop again please. And in addition:

netsh int ipv4 show config
netsh int ipv6 show dns

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mister-andre April 25, 2020 13:24

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

opendns.com
primary name server = auth1.opendns.com
responsible mail addr = noc.opendns.com
serial = 1587820168
refresh = 16384 (4 hours 33 mins 4 secs)
retry = 2048 (34 mins 8 secs)
expire = 1048576 (12 days 3 hours 16 mins 16 secs)
default TTL = 2560 (42 mins 40 secs)

Server: rns01.charter.com
Address: 2607:f428:ffff:ffff::1

Name: whoami.akamai.net
Address: 68.114.44.169

Configuration for interface "Local Area Connection"
DHCP enabled: Yes
InterfaceMetric: 5
DNS servers configured through DHCP: 10.30.50.25
10.30.50.30
Register with which suffix: Primary only
WINS servers configured through DHCP: 10.30.50.25

Configuration for interface "Local Area Connection* 1"
DHCP enabled: Yes
InterfaceMetric: 25
DNS servers configured through DHCP: None
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Local Area Connection* 2"
DHCP enabled: Yes
InterfaceMetric: 25
DNS servers configured through DHCP: None
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Wireless Network Connection"
DHCP enabled: Yes
IP Address: 192.168.1.188
Subnet Prefix: 192.168.1.0/24 (mask 255.255.255.0)
Default Gateway: 192.168.1.1
Gateway Metric: 0
InterfaceMetric: 50
DNS servers configured through DHCP: 192.168.1.1
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Loopback Pseudo-Interface 1"
DHCP enabled: No
IP Address: 127.0.0.1
Subnet Prefix: 127.0.0.0/8 (mask 255.0.0.0)
InterfaceMetric: 75
Statically Configured DNS Servers: None
Register with which suffix: Primary only
Statically Configured WINS Servers: None

Configuration for interface "Local Area Connection"
DNS servers configured through DHCP: None
Register with which suffix: Primary only

Configuration for interface "Local Area Connection* 1"
DNS servers configured through DHCP: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

Configuration for interface "Local Area Connection* 2"
DNS servers configured through DHCP: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

Configuration for interface "Wireless Network Connection"
DNS servers configured through DHCP: 2607:f428:ffff:ffff::1
2607:f428:ffff:ffff::2
Register with which suffix: Primary only

Configuration for interface "Loopback Pseudo-Interface 1"
Statically Configured DNS Servers: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

Is there any way for me to erase or reset the 'Configuration for interface "Local Area Connection"' listing?

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rotblitz April 25, 2020 13:50

You do not need to erase or reset an interface. Your problem is the router. As you can see, it hands out the wrong IPv6 addresses 2607:f428:ffff:ffff::1 and 2607:f428:ffff:ffff::2, not the ones you configured. The workaround would be to configure the correct addresses manually on the laptop.

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mister-andre July 28, 2020 01:41

Now the filter works on the laptop but not my phone. Do I just need to buy another router? I think I've done all I can with the router settings and the IP settings on the computer. I did some of the commands from before and I received some error messages.

nslookup -type=txt debug.opendns.com

Server: UnKnown
Address: 208.67.222.123
*** UnKnown can't find debug.opendns.com: No response from server

=====

nslookup whoami.akamai.net

Server: UnKnown
Address: 208.67.222.123

*** UnKnown can't find whoami.akamai.net: No response from server

=====

netsh int ipv4 show config

Configuration for interface "Local Area Connection"
DHCP enabled: Yes
InterfaceMetric: 5
Statically Configured DNS Servers: 208.67.222.123
208.67.220.123
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Local Area Connection* 1"
DHCP enabled: Yes
InterfaceMetric: 25
DNS servers configured through DHCP: None
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Local Area Connection* 2"
DHCP enabled: Yes
InterfaceMetric: 25
DNS servers configured through DHCP: None
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Wireless Network Connection"
DHCP enabled: Yes
IP Address: 192.168.1.188
Subnet Prefix: 192.168.1.0/24 (mask 255.255.255.0)
Default Gateway: 192.168.1.1
Gateway Metric: 0
InterfaceMetric: 50
Statically Configured DNS Servers: 208.67.222.123
208.67.220.123
Register with which suffix: Primary only
WINS servers configured through DHCP: None

Configuration for interface "Loopback Pseudo-Interface 1"
DHCP enabled: No
IP Address: 127.0.0.1
Subnet Prefix: 127.0.0.0/8 (mask 255.0.0.0)
InterfaceMetric: 75
Statically Configured DNS Servers: None
Register with which suffix: Primary only
Statically Configured WINS Servers: None

=====

netsh int ipv6 show dns

Configuration for interface "Local Area Connection"
Statically Configured DNS Servers: ::ffff:208.67.222.123
::ffff:208.67.220.123
Register with which suffix: Primary only

Configuration for interface "Local Area Connection* 1"
DNS servers configured through DHCP: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

Configuration for interface "Local Area Connection* 2"
DNS servers configured through DHCP: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

Configuration for interface "Wireless Network Connection"
Statically Configured DNS Servers: ::ffff:208.67.222.123
::ffff:208.67.220.123
Register with which suffix: Primary only

Configuration for interface "Loopback Pseudo-Interface 1"
Statically Configured DNS Servers: fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Register with which suffix: Primary only

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rotblitz July 28, 2020 12:00

You couldn’t reach OpenDNS. I do not know why this is.

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