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Re: [tor-bugs] #32597 [Circumvention/Snowflake]: Hello, currently, in China, Tor Browser 9.5a2 still can't connect to Tor network through snowflake bridge
#32597: Hello, currently, in China, Tor Browser 9.5a2 still can't connect to Tor
network through snowflake bridge
-------------------------------------+------------------------
Reporter: amiableclarity2011 | Owner: (none)
Type: defect | Status: new
Priority: Immediate | Milestone:
Component: Circumvention/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
-------------------------------------+------------------------
Comment (by dcf):
Replying to [comment:7 cohosh]:
> Replying to [comment:5 amiableclarity2011]:
> > thank you very much for your help. i really appreciate it.
> >
> > but it seems that stun.ekiga.net is not blocked by great firewall
> >
> >
> > {{{
> > ping stun.ekiga.net
> > PING stun.ekiga.net (216.93.246.18) 56(84) bytes of data.
> > }}}
>
> > {{{
> > --- stun.ekiga.net ping statistics ---
> > 25 packets transmitted, 24 received, 4% packet loss, time 28759ms
> > rtt min/avg/max/mdev = 222.237/226.342/242.273/4.449 ms
> > }}}
> >
> >
> >
> > above is the ping result.
> Thanks for the information, that matches what I'm seeing on the VPS
then.
I suppose it's possible that stun.ekiga.net's IP address could be
reachable to ICMP echo, but still have its UDP STUN port blocked. Could
you try one of these commands? The data string is a
[https://tools.ietf.org/html/rfc5389#section-6 Binding request] that
should elicit a response.
{{{
$ nping -d --udp -p 3478 stun.ekiga.net --data
000100002112a442aaaaaaaabbbbbbbbcccccccc
Starting Nping 0.7.70 ( https://nmap.org/nping ) at 2019-12-05 12:10
SENT (0.0062s) UDP packet with 20 bytes to stun.ekiga.net:3478
(216.93.246.18:3478)
RCVD (0.0914s) UDP packet with 92 bytes from stun.ekiga.net:3478
(216.93.246.18:3478)
SENT (1.0076s) UDP packet with 20 bytes to stun.ekiga.net:3478
(216.93.246.18:3478)
RCVD (1.0911s) UDP packet with 92 bytes from stun.ekiga.net:3478
(216.93.246.18:3478)
SENT (2.0093s) UDP packet with 20 bytes to stun.ekiga.net:3478
(216.93.246.18:3478)
RCVD (2.0819s) UDP packet with 92 bytes from stun.ekiga.net:3478
(216.93.246.18:3478)
SENT (3.0103s) UDP packet with 20 bytes to stun.ekiga.net:3478
(216.93.246.18:3478)
RCVD (3.1011s) UDP packet with 92 bytes from stun.ekiga.net:3478
(216.93.246.18:3478)
SENT (4.0123s) UDP packet with 20 bytes to stun.ekiga.net:3478
(216.93.246.18:3478)
RCVD (4.1005s) UDP packet with 92 bytes from stun.ekiga.net:3478
(216.93.246.18:3478)
Max rtt: 90.767ms | Min rtt: 72.616ms | Avg rtt: 84.077ms
UDP packets sent: 5 | Rcvd: 5 | Lost: 0 (0.00%)
Tx time: 4.00710s | Tx bytes/s: 24.96 | Tx pkts/s: 1.25
Rx time: 4.09550s | Rx bytes/s: 112.32 | Rx pkts/s: 1.22
Nping done: 1 IP address pinged in 4.10 seconds
}}}
{{{
$ echo 000100002112a442aaaaaaaabbbbbbbbcccccccc | xxd -p -r > payload
$ sudo /usr/sbin/hping3 -c 5 --udp -p 3478 stun.ekiga.net -d 20 -E payload
HPING stun.ekiga.net (216.93.246.18): udp mode set, 28 headers + 20 data
bytes
len=120 ip=216.93.246.18 ttl=48 DF id=0 seq=0 rtt=83.8 ms
len=120 ip=216.93.246.18 ttl=48 DF id=0 seq=1 rtt=83.6 ms
len=120 ip=216.93.246.18 ttl=48 DF id=0 seq=2 rtt=91.5 ms
len=120 ip=216.93.246.18 ttl=48 DF id=0 seq=3 rtt=87.4 ms
--- stun.ekiga.net hping statistic ---
5 packets transmitted, 4 packets received, 20% packet loss
round-trip min/avg/max = 83.6/86.6/91.5 ms
}}}
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32597#comment:28>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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