Dotaz: jak nastavit resolvovani DNS (ping: unknown host)

[Dalibor]

Hezky vecer,

rad bych poprosil o radu - po zadani ping neco.cz (treba ping abclinuxu.cz) mi to napise host unknown.

/etc/resolv.conf:

nameserver 217.31.196.10 nameserver 81.0.235.1 nameserver 81.95.96.2

/etc/nsswitch.conf: hosts: files dns

vyzkousel jsem uz vsechny mozne dns servery v resolv.conf, jedine ceho jsem dosahl je, ze kdyz se ptam na domenu, kterou ma ve sprave dany DNS server, tak mi ji to prelozi, jinak nic. Neda se nekde nastavit aby mi to ten DNS server ktereho se ptam resolvoval sam?

Diky Dalibor

Odpovědi

[Dalibor]

A nefunguje mi ani Ping localhost , co tady muze byt za problem?

[martin]

ping 127.0.0.1 ti funguje ? nebo nekam ven treba ping 212.47.0.4 ? neblokuje ti dns requesty firewall nebo na druhe strane ? zkus si nastavit tyto dnska 212.47.0.4 nebo 212.47.1.4

[Dalibor]

Prave ze mi nefunguje ani ping 127.0.0.1 ale nektere jine servery a DNS servery pingnout muzu. Treba ping google.com je OK, ale ping abclinuxu.cz hlasi unknown host.

Firewall by tam byt nemel, ale muze to byt tim, ze mam system jako virtual server?

par ukazek:

# ping localhost
PING localhost (127.0.0.1): 56 data bytes
--- localhost ping statistics ---
5 packets transmitted, 0 packets received, 100% packet loss


# ping google.com
PING google.com (64.233.167.99): 56 data bytes
64 bytes from 64.233.167.99: icmp_seq=0 ttl=238 time=123.320 ms
64 bytes from 64.233.167.99: icmp_seq=1 ttl=238 time=123.026 ms
64 bytes from 64.233.167.99: icmp_seq=2 ttl=238 time=123.495 ms
64 bytes from 64.233.167.99: icmp_seq=3 ttl=238 time=122.387 ms
64 bytes from 64.233.167.99: icmp_seq=4 ttl=238 time=121.409 ms
64 bytes from 64.233.167.99: icmp_seq=5 ttl=238 time=122.012 ms
--- google.com ping statistics ---
6 packets transmitted, 6 packets received, 0% packet loss
round-trip min/avg/max/stddev = 121.409/122.608/123.495/0.743 ms

# ping abclinuxu.cz
ping: unknown host