-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Check it. This is ISP. They are hands-curved. 01.09.15 21:47, Amos Jeffries пишет: > On 2/09/2015 1:06 a.m., Yuri Voinov wrote: >> >> Found it. My ISP can't pass ICMPv4/v6 to wiki.squid-cache.org . Here is >> problem. >> >> # ping wiki.squid-cache.org >> no answer from wiki.squid-cache.org >> > > Perhapse that is involved. But I think you have mistaken what I wrote. > > Ping just *uses* ICMP importantly it uses ICMP "echo" messages. Which > are very different beasts to the control ICMP messages. Blocking those > does not break much except tools like ping itself. > > > Try these three tests from your Squid machine: > > ## telnet 127.0.0.1 65532 > Trying 127.0.0.1... > telnet: Unable to connect to remote host: Connection refused > > ## telnet -4 wiki.squid-cache.org 65532 > Trying 77.93.254.178... > telnet: Unable to connect to remote host: Connection refused > > ## telnet -6 wiki.squid-cache.org 65532 > Trying 2001:4b78:2003::1... > telnet: Unable to connect to remote host: Network is unreachable > > > They should all return the same messages as above almost faster than you > can blink. > > My above were run from a v6-enabled LAN on a v4-only ISP who blocks ping > [ICMP echo] too just like yours. The first two got to the IPv4 > server/address and got a ICMPv4 port-closed error back, the third only > got to my LAN border router where the IPv6 stops and got the ICMPv6 > destination-unavailable back. > > > You said your network is v4-only. > => So the first and third should both return fast and at the same > speed. If either one takes a while your Squid machine is broken in > regards to the relevant protocol (v4 for test 1, v6 for test 3). > > You said your ISP is blocking ping. > => The second test should still succeed if they are blocking it > correctly. If it fails they have the broken network and maybe need > educating about ICMP. > > HTH > Amos > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJV5dRpAAoJENNXIZxhPexG0hwH/RYgw+N38lvJLA9a30ZfjhkD sp0iOZctNQYbh1o1gi7eEbB9IZ6ib2+7+y+IL85A1PHrcc3QFYwtshkam6aOQV43 HpvXjGsvipxlTZuQlp8rIn4s/Yb9pBTwZ6YTA5NOuO/jV5rSFf+EoLyHMurIq8Y1 H+Ctem9W2+oqAmoVC/rpDkAR92d8WlIKB3+DyUi1FDNzXgObsTHM83Qc8t95bU/G qHgmPzKcU9k7oM1VpzJjfFh8Yf2ObkH3pRyRXCNiz4WYXNTSM0rllTV6gbAZu/LA BTH0y/NiVXRaWcEk9zVAbaR+9nI8xkmSv3N78aY1sVx04o9wtPaJV8xmq/kQtHM= =pPJl -----END PGP SIGNATURE----- _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users
