[Users] Extremely slow connection to git.claws-mail.org

Sat Sep 29 16:24:31 CEST 2018

Hello George,

On Sat, 29 Sep 2018 13:01:53 +0300
Removed GDPR <removed-gdpr at example.com> wrote:

> What are GTT and L3?

Sorry, my ISP background is surfacing... L3 (Level3) and GTT are large ISPs
whose backbones are spanning throughout the planet...

> It is not possible to traceroute from anywhere to me
> because my firewall drops all input (including ICMP).

Of course it is possible ;) Your firewall is dropping only part of the
traffic otherwise you would have no connectivity ;)
But the traceroutes we are interested in are not the one covering your
internal network, I consider that part to be working as you have some 
git clone with decent speeds.
The traceroutes we are interested in are the ones to some equipment close
to you. It can be the external interface of your FW (even if it drop
ICMP), or some local equivalent to "ping.online.net" hosted by your
provider.

> I am not a network expert. If I understand correctly
> how it works: I connect to the git host, request
> something, then it sends packets back to me. Are you
> suggesting that the request and the response travel
> different routes?

Yes, this is highly possible... It has been decades since Internet is no
more the symetric backbone it used to be at its inception. Now, it is a
mesh of networks, connecting to each other in many different places, and
each having their own strategy to decide the way they want the traffic to
enter their infrastructure or leave it... 

Quick example :
Office to home :

7 [14:21] :~> traceroute $HONE
traceroute to $HOME ($HOME), 30 hops max, 38 byte packets
 1  192.168.0.14 (192.168.0.14)  0.633 ms  0.344 ms  0.296 ms
 2  put92-4-82-231-50-254.fbx.proxad.net (82.231.50.254)  31.904 ms  33.094 ms  33.364 ms
 3  213.228.8.254 (213.228.8.254)  32.494 ms  32.489 ms  33.492 ms
 4  p11-crs16-1-be1009.intf.routers.proxad.net (194.149.161.13)  34.308 ms  33.085 ms  34.114 ms
 5  194.149.166.54 (194.149.166.54)  33.183 ms  32.603 ms  33.866 ms
 6  193.253.13.69 (193.253.13.69)  42.816 ms  32.961 ms  34.647 ms
 7  ae49-0.nridf102.aubervilliers.francetelecom.net (193.252.98.105)  32.948 ms  34.450 ms  33.517 ms
 8  ae42-0.ncidf104.paris15earrondissement.francetelecom.net (193.252.98.97)  34.452 ms  34.819 ms  33.267 ms
 9  ae40-0.ncidf103.puteaux.francetelecom.net (193.252.98.17)  34.078 ms  34.452 ms  34.638 ms
10  * * *

Home to office :
477 [14:18] rol at riri:~> traceroute $OFFICE
traceroute to $OFFICE ($OFFICE), 30 hops max, 60 byte packets
 1  livebox.home (192.168.1.254)  0.361 ms  0.368 ms  0.405 ms
 2  80.10.239.9 (80.10.239.9)  2.160 ms  2.496 ms  2.853 ms
 3  ae102-0.ncidf103.Puteaux.francetelecom.net (193.253.80.138)  5.293 ms  5.298 ms  5.304 ms
 4  ae41-0.niidf101.Paris3eArrondissement.francetelecom.net (193.252.159.42)  3.762 ms  3.660 ms  3.733 ms
 5  193.252.137.10 (193.252.137.10)  3.750 ms  3.800 ms  3.720 ms
 6  colt-1.gw.opentransit.net (193.251.154.76)  3.772 ms  1.764 ms  2.707 ms
 7  * * *
 8  * * *
 9  router_120501482.ia.colt.net (62.23.86.14)  3.906 ms  3.819 ms  3.875 ms
10  $OFFICE ($OFFICE)  4.013 ms  4.052 ms  3.976 ms

Office to home goes thru Free, and the FranceTelecom/Orange. Home to Office
goes thru FranceTelecom/Orange and then Colt.

Paul

-- 

Paul Rolland                                E-Mail : rol(at)witbe.net
CTO - Witbe.net SA                          Tel. +33 (0)1 47 67 77 77
Les Collines de l'Arche                     Fax. +33 (0)1 47 67 77 99
F-92057 Paris La Defense                    RIPE : PR12-RIPE

LinkedIn : http://www.linkedin.com/in/paulrolland
Skype    : rollandpaul

"I worry about my child and the Internet all the time, even though she's
too young to have logged on yet. Here's what I worry about. I worry that 10
or 15 years from now, she will come to me and say 'Daddy, where were you
when they took freedom of the press away from the Internet?'"
--Mike Godwin, Electronic Frontier Foundation 

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