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Old 09-08-2015, 01:22 PM   #1
knokej
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Why doesn't netstat show the HTTP connection I am logged in on?


I can log in, using a browser, remotely to a box running embedded Linux, but netstat does not show the HTTP connection or listener. Also ps does not show a process that looks like a web server. I can start a new listener and netstat will show it listening but attempts to connect to it from outside get nowhere - they simply receive an immediate reset (and iptables does not appear to be blocking the port). Anyone have any idea how/why this could be occurring?

I have done almost nothing with embedded systems, but I know this box is complex. It contains multiple boards, each with multiple processors, and there are multiple Ethernet devices, some apparently used for internal communication. One possibility in my mind is that the web server is actually running on another processor that is hidden from me. That seems odd though in that the IP and MAC addresses reported by the processor that I do see match the values see from outside.

Thanks for any help.
 
Old 09-08-2015, 01:40 PM   #2
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show us the netstat command you used?
 
Old 09-08-2015, 02:53 PM   #3
knokej
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Here's the output of the netstat command I used:

netstat -a

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 (null):sunrpc (null):* LISTEN
tcp 0 0 (null):30000 (null):* LISTEN
tcp 0 0 (null):ftp (null):* LISTEN
tcp 0 0 (null):1110 (null):* LISTEN
tcp 0 0 (null):1120 (null):* LISTEN
tcp 0 0 (null):2049 (null):* LISTEN
tcp 0 0 (null):37382 (null):* LISTEN
tcp 0 0 (null):60744 (null):* LISTEN
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15050 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):15051 (null):*
udp 0 0 (null):57045 (null):*
udp 0 0 (null):38218 (null):*
udp 0 0 (null):48026 (null):*
udp 0 0 (null):2049 (null):*
udp 0 0 (null):2052 (null):*
udp 0 0 (null):2053 (null):*
udp 0 0 (null):1059 (null):*
udp 0 0 (null):33333 (null):*
udp 0 0 (null):sunrpc (null):*
udp 0 0 (null):1162 (null):*

Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node Path
 
  


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