[ILUG] Accessing home computer from outside

[Jeroen Massar]

FRLinux wrote:
> On 12/30/06, Timothy Murphy <tim at birdsnest.maths.tcd.ie> wrote:
>> Unfortunately I don't know the IP address I'll be calling from.
> 
> This is where IPv6 comes into play, provided that you can connect from
> an IPv6 network back home (as I do).
> 
> <rant>
> TCD has been known to play with IPv6 for a long time but for some
> reason, they still completely block IPv6 traffic between the internet
> and themselves. I have ranted about this a few times and still fail to
> understand why this is such a big issue for them.

Actually, connectivity from TCD works perfectly well. Maybe it depends
on department though; CS & Maths work as I have tested, also from my
home in .nl (see below for the full trace):

64 bytes from salmon.maths.tcd.ie: icmp_seq=1 ttl=54 time=34.9 ms

The only thing is that they block a lot of ports, the same ones that
they block on IPv4, as such ports like 110, 993 etc are open. 80, 22 are
closed though, thus simply set up a SOCKS proxy somewhere on the outside
and you are done. Which also avoids having them being able to track what
you do on the internet, which is none of their business.

Greets,
 Jeroen

--

jeroen at purgatory:~$ traceroute6 www.maths.tcd.ie
traceroute to salmon.maths.tcd.ie (2001:770:10:300::86e2:510b) from
2001:7b8:20d:0:290:27ff:fe24:c19f, 30 hops max, 24 byte packets
 1  2001:7b8:5:10:74::1 (2001:7b8:5:10:74::1)  12.334 ms  11.502 ms
10.924 ms
 2  i49.ge-0-1-0.jun1.kelvin.ipv6.network.bit.nl
(2001:7b8:3:31:290:6900:31c6:d81f)  10.942 ms  13.407 ms  12.928 ms
 3  jun1.sara.ipv6.network.bit.nl (2001:7b8::205:8500:120:7c1f)  12.987
ms  11.541 ms  11.955 ms
 4  v6-transit.glbx.net (2001:7b8:40:7::1)  11.988 ms  12.51 ms  11.984 ms
 5  2001:450:2001:1000:0:670:1708:1225
(2001:450:2001:1000:0:670:1708:1225)  32.99 ms  32.503 ms  31.984 ms
 6  pos1-0-cr1-kp.hea.net (2001:770:90:7::1)  31.992 ms  34.449 ms
32.989 ms
 7  gige5-1-cr1-cwt.hea.net (2001:770:400:11::1)  61.99 ms  58.436 ms
182.001 ms
 8  gige1-2-ar1-tcd.hea.net (2001:770:400:d::2)  32.958 ms  32.47 ms
31.986 ms
 9  2001:770:8:4::2 (2001:770:8:4::2)  31.992 ms  32.578 ms  31.982 ms
10  mathgate.tcd.ie (2001:770:10:100::86e2:a33)  32.99 ms  33.395 ms
32.984 ms
11  *
12  *