Arch Linux

darkjh

Member

Registered: 2011-10-21

Posts: 33

[Resolved] Cannot visit some website on wifi

Hi,

Just fresh installed Arch on my xps 9500 2020.

After wifi setup with NetworkManager, I found that some website can not be opened in chromium or firefox, for example nytimes.com. But google and archlinux site are Ok.
On cable connection everything works.

Ping to those urls are ok. DNS resolution seems ok with dig.

I've other machines in Arch and there's no problem.

Any idea what could be wrong?

Last edited by darkjh (2020-08-04 17:22:31)

seth

Member

Registered: 2012-09-03

Posts: 60,970

Re: [Resolved] Cannot visit some website on wifi

What happens instead? Timeout?
Can you open "links nytimes.com" (CLI browser, https://www.archlinux.org/packages/core/x86_64/links/ )?
Are wifi and wired connection to the same router?

Sanity check:

nmap -p80 nytimes.com

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darkjh

Member

Registered: 2011-10-21

Posts: 33

Re: [Resolved] Cannot visit some website on wifi

What happens instead? Timeout?
Can you open "links nytimes.com" (CLI browser, https://www.archlinux.org/packages/core/x86_64/links/ )?
Are wifi and wired connection to the same router?

Sanity check:

nmap -p80 nytimes.com

Yes it's timeout.

I tried `curl -v www.lemonde.fr` for example

~ $ curl -v www.lemonde.fr
*   Trying 151.101.122.217:80...
* connect to 151.101.122.217 port 80 failed: Connection timed out
* Failed to connect to www.lemonde.fr port 80: Connection timed out
* Closing connection 0
curl: (28) Failed to connect to www.lemonde.fr port 80: Connection timed out

and for nmap

nmap -p80 -Pn nytimes.com
Starting Nmap 7.80 ( https://nmap.org ) at 2020-08-03 10:21 CEST
Nmap scan report for nytimes.com (151.101.129.164)
Host is up.
Other addresses for nytimes.com (not scanned): 151.101.65.164 151.101.193.164 151.101.1.164

PORT   STATE    SERVICE
80/tcp filtered http

Nmap done: 1 IP address (1 host up) scanned in 2.21 seconds

Maybe it could be a ipv6 problem? If I ping url that I can visit, it's always an ipv6 ip. But if I ping the url I cannot visit, it's always an ipv4 ip.

darkjh

Member

Registered: 2011-10-21

Posts: 33

Re: [Resolved] Cannot visit some website on wifi

I also try disable NetworkManager and use wpa_supplicant and dhclient directly to connect to wifi. Same problem.

seth

Member

Registered: 2012-09-03

Posts: 60,970

Re: [Resolved] Cannot visit some website on wifi

Maybe it could be a ipv6 problem? If I ping url that I can visit, it's always an ipv6 ip. But if I ping the url I cannot visit, it's always an ipv4 ip.

Maybe.
What's the output of "ip a; ip r" in the wired and the wifi case?

I assume you ran "nmap -Pn" because the host didn't respond at all?

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darkjh

Member

Registered: 2011-10-21

Posts: 33

Re: [Resolved] Cannot visit some website on wifi

Maybe it could be a ipv6 problem? If I ping url that I can visit, it's always an ipv6 ip. But if I ping the url I cannot visit, it's always an ipv4 ip.

Maybe.
What's the output of "ip a; ip r" in the wired and the wifi case?

I assume you ran "nmap -Pn" because the host didn't respond at all?

On wifi

ip a;ip r
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: wlp0s20f3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether cc:f9:e4:9c:5a:0e brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.37/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp0s20f3
       valid_lft 43169sec preferred_lft 43169sec
    inet6 2a01:e35:243b:e80:1ea2:e3ba:a857:46d4/64 scope global dynamic noprefixroute
       valid_lft 86371sec preferred_lft 86371sec
    inet6 fe80::f77f:3243:47df:690c/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
default via 192.168.1.254 dev wlp0s20f3 proto dhcp metric 20600
192.168.1.0/24 dev wlp0s20f3 proto kernel scope link src 192.168.1.37 metric 600

wired

ip a;ip r
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: wlp0s20f3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether ba:64:8c:f8:36:b9 brd ff:ff:ff:ff:ff:ff permaddr cc:f9:e4:9c:5a:0e
3: enp56s0u1u3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 34:29:8f:99:0e:72 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.5/24 brd 192.168.1.255 scope global dynamic noprefixroute enp56s0u1u3
       valid_lft 43177sec preferred_lft 43177sec
    inet6 2a01:e35:243b:e80:5938:c44a:cdf5:d6fa/64 scope global dynamic noprefixroute
       valid_lft 86379sec preferred_lft 86379sec
    inet6 fe80::291a:2fc9:72f8:7e42/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
default via 192.168.1.254 dev enp56s0u1u3 proto dhcp metric 100
192.168.1.0/24 dev enp56s0u1u3 proto kernel scope link src 192.168.1.5 metric 100

Yes nmap tells me the host seems down.

darkjh

Member

Registered: 2011-10-21

Posts: 33

Re: [Resolved] Cannot visit some website on wifi

Hmm very strange that if I switch to a wifi 2.4G it works. But 5G has the above problem. On the same router.
What could be wrong? Wireless card driver?

Last edited by darkjh (2020-08-03 17:24:27)

darkjh

Member

Registered: 2011-10-21

Posts: 33

Re: [Resolved] Cannot visit some website on wifi

Ok finally it's not the same router. The connection in 5G band I connect to is from a tp link repeater. I restart the repeater and the problem just go away.
Thanks seth for your help!

seth

Member

Registered: 2012-09-03

Posts: 60,970

Re: [Resolved] Cannot visit some website on wifi

Well, the problem solved itself with your help - I didn't do a lot.
I like that kind of problem

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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