[SOLVED]ping and incoming connections not working

Question

Problem: eg.
$ ping google.com
PING google.com (209.85.148.99) 56(84) bytes of data.
no answer so i press ctrl+c, i get:
^C
--- google.com ping statistics ---
56 packets transmitted, 0 received, 100% packet loss, time 54999ms
i can't use any torrent client because it accepts connections only then i start client(tested with deluge and transmission). eg. i start deluge->torrent start upload->later it won't start upload, but it sends to server info, server get that info(i tested in situation there i'm the only seeder and there is only one leecher which is under my control)
thoughts about that: i searched for solution for a long time, i very doubt that is a software issue, i think it's hardware problem(and about hardware i know nothing). why i think so:
possible cause of problem:
1. kernel upgrade to 3.0=with ubuntu live cd same problems, so it can't be it
2. i deleted windows xp, windows writes something to network card or bios?
3. hardware problem
before problems started i not did something big, so problem could cause only these 3 items.
i don't have firewall, there was one but for testing purposes i deleted it.
network card Realtek RTL-8169 Gigabit Ethernet, driver is latest(but tested and older version)
i tested with 2 different ISP's. one connected over lan and another just my phone connected as modem over usb cable. in both cases ping not work and all other network services works ok, i can browse, ftp works, i can download torrent(if torrent download starts with program start, not later), skype works, internet radio works, etc.
question: what to do, to make torrents work as they worked earlier? i have this problem about few weaks, in past 3 years i don't have such problems.
Last edited by gymka (2011-08-29 14:04:29)

Answer 1

I(i mean browser) can reach everything and everythere, but "ping" can't reach sites. Tried ping sites in my country, same result. i get answer from ping only then i ping these sites:
127.0.0.1
and
84.55.46.19(my ISP site for clients)
i can't even ping 192.168.0.1(it's router, so how can i browse if i can't reach router?)
and i can't ping 84.55.46.27(it's my ISP site for public)
# tcptraceroute archlinux.org
Selected device eth0, address 192.168.15.10, port 42318 for outgoing packets
Tracing the path to archlinux.org (66.211.214.131) on TCP port 80 (http), 30 hops max
1 192.168.15.1 0.940 ms 0.596 ms 0.553 ms
2 84.55.40.129.ip.greitas.lt (84.55.40.129) 3.047 ms 2.047 ms 2.649 ms
3 10.10.20.20 5.741 ms 5.935 ms 5.010 ms
4 * * *
^C
Same problems with different ISP so it's not my ISP problem.
Another thing:
# netstat -lnp|grep deluge
unix 2 [ ACC ] STREAM LISTENING 344527 1560/python2 /home/gymka/.config/deluge/ipc/deluge-gtk
as i understand 344527 is port on which app listens, but in application shows that it listens on 51128, then i configured to use only 51128 and restarted deluge
# netstat -lnp|grep deluge
unix 2 [ ACC ] STREAM LISTENING 522255 1641/python2 /home/gymka/.config/deluge/ipc/deluge-gtk[/deluge]
transmission atleast shows that port 57781(don't know if it listen it)
# netstat -lnp|grep transmission
tcp 0 0 0.0.0.0:57781 0.0.0.0:* LISTEN 1833/transmission-g
tcp 0 0 :::57781 :::* LISTEN 1833/transmission-g
udp 0 0 239.192.152.143:6771 0.0.0.0:* 1833/transmission-g
udp 0 0 0.0.0.0:57781 0.0.0.0:* 1833/transmission-g
unix 2 [ ACC ] STREAM LISTENING 709406 1833/transmission-g /tmp/at-spi2/socket-1833-1804289383
Last edited by gymka (2011-08-28 06:20:12)