apache - Port 80 open on server but cannot connect to it -

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i have issue have been trying resolve cannot figure out going on. have various web servers , have apache installed on them. on same network 1 giving me issue.

i have servers (.44, .45 , .46)

i can ssh .44 , ping .45 , .46 no issues. when try test , see if port 80 open, .45 gives me message.

 someadminuser@somelocation:/var/www$ telnet 10.0.0.45 80  trying 10.0.0.45...  telnet: unable connect remote host: connection refused

here same test on .46

 someadminuser@somelocation:/var/www$ telnet 10.0.0.46 80  trying 10.0.0.46...  connected 10.0.0.46.  escape character '^]'.

so ssh .45 see port.

 someadminuser@somelocation:~$ netstat -tulpn | grep :80  (no info read "-p": geteuid()=1000 should root.)  tcp        0      0 0.0.0.0:80              0.0.0.0:*               listen    someadminuser@somelocation:~$ sudo iptables -l  chain input (policy accept)  target     prot opt source               destination            accept     tcp  --  anywhere             anywhere             tcp dpt:httpflags:   accept     tcp  --  anywhere             anywhere             tcp dpt:http  accept     tcp  --  anywhere             anywhere             tcp dpt:http  accept     tcp  --  anywhere             anywhere             tcp dpt:http  accept     tcp  --  anywhere             anywhere             tcp dpt:http

any appreciated.

****************update****************

i saved ipv4 table , got:

 # generated iptables-save v1.4.12 on thu may 29 14:05:31 2014  *nat  :prerouting accept [3416:231940]  :input accept [1175:75880]  :output accept [337:25196]  :postrouting accept [337:25196]  -a prerouting -p tcp -m tcp --dport 80 -j redirect --to-ports 3000  -a output -d 127.0.0.1/32 -p tcp -m tcp --dport 80 -j redirect --to-ports 3000

of course, there more part suspicious.

so server redirecting connections local port 80 local port 3000. presumably there nothing listening on port 3000 , why seeing "connection refused".

if working servers don't have configuration, need remove (or fix) iptables. if other servers do have that, need figure out have running on port 3000 , why failing server not have same.


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