[Icecast] can't use icecast2 in ubuntu 12.04

[Simone Dal Maso]

Thomas B. Rücker (il 30/07/2014 23:26) ha scritto:
  You could run "tcpdump -ni eth0 port 8000" and try to access the
> icecast web interface. If you don't see any output, then traffic to port
> 8000 is blocked externally.

good point of view.
Ok, let's try:
  root at mail2:/home/spaziouser# tcpdump -ni eth0 port 8000 

  tcpdump: verbose output suppressed, use -v or -vv for full protocol 
decode
  listening on eth0, link-type EN10MB (Ethernet), capture size 65535 
bytes

now I go to firefox and type the address to port 8000 and:

  10:35:29.827739 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944767226 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:31.054375 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944768234 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:31.931012 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944769242 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:32.836248 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944770250 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:33.839519 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944771259 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:34.851640 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944772266 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:36.882248 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,nop,wscale 4,nop,nop,TS val 
944774282 ecr 0 

  ,sackOK,eol], length 0 
 

  10:35:40.881943 IP 94.161.255.17.54042 > 178.79.148.185.8000: Flags 
[S], seq 121 

  406478, win 65535, options [mss 1380,sackOK,eol], length 0 
 

  ^C 
 

  8 packets captured 
 

  8 packets received by filter 
 

  0 packets dropped by kernel 
 


so I think that connectivity exist. the same result is with icecast2 
disabled.
I think that for some strange reason firewall or something is blocking 
icecast2 for listening.
really strange!