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Thread: Can't Access Apache Server on the Local Network

  1. #1
    Join Date
    Apr 2009
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    Ubuntu 13.04 Raring Ringtail

    Can't Access Apache Server on the Local Network

    I'm trying to set up a small Intranet system to run OpenERP or similar using browser-based clients. I have an Ubuntu machine running 10.04 desktop edition to act as a temporary/testing server until we set up a proper, dedicated machine with 10.04 server edition.

    I have installed Apache2 from the repos and it is up and running fine - locally. That is the problem, I can't access the server from other machines on the LAN. Ping works, btw.

    So I've been reading tutorials and howtos for the past week, but for the life of me, I can't find what I'm doing wrong. The standard Apache setup seems to be made to "just work", so although I've looked at the various configuration files mentioned in the tutorials, I haven't actually changed anything.

    Therefore, dear members of the community, I turn to you asking for pointers and hints. You'll probably be wanting more information, but I'm not quite sure where to start, to be quite honest. I'm very much a noob when it comes to networking - and not much better at administration, either, I'm afraid.

    Your help is, as always, greatly appreciated.

  2. #2
    Join Date
    Oct 2010
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    12
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Can't Access Apache Server on the Local Network

    so on the linux machine you can browse to 127.0.0.1 and it works ?

    but when you browse to you linux machine from another machine on the network it doesnt work ?

  3. #3
    Join Date
    Apr 2009
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    Ubuntu 13.04 Raring Ringtail

    Re: Can't Access Apache Server on the Local Network

    Correct. I type 127.0.0.1 or the machine's IP 192.168.1.33 in the browser and the server responds "It works!...".

    Typing the IP into the browser from another computer on the local network gets me "server not found."

    As I mentioned, I can ping the IP address and get responses from it.

  4. #4
    Join Date
    Jul 2009
    Location
    Pune, India
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    8
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Can't Access Apache Server on the Local Network

    well I have a similar problem. When I first installed apache2 all went fine, and I was able to access http://localhost. The next day (after reboot) this page was not working. I checked and found that apache service was not started. So I issued this command "sudo /etc/init.d/apache2" and it errored out with message "make_sock can't bind to port 80. port in use" (or something similar.

    I used netstat to see that "tcp6" was listening on port 80. I tried to kill "tcp6" but it did nothing. So I just changed the port in my conf files, and started apache. I set the new port to 1983. I could successfully start apache2 and access http://localhost:1983

    The next day again the same problem happened, and this time this "tcp6" had attached to port 1983, causing apache2 to fail.

    what is this tcp6 and how can I resolve this conflict between tcp6 and apach2.

    thanks for helping out in advance.

  5. #5
    Join Date
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    Ubuntu 13.04 Raring Ringtail

    Re: Can't Access Apache Server on the Local Network

    Bump.. anyone?

  6. #6
    Join Date
    Nov 2008
    Location
    Southern Ontario, Canada
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    253
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    Ubuntu Development Release

    Re: Can't Access Apache Server on the Local Network

    Code:
    sudo apt-get install chkconfig
    sudo chkconfig --level 5 httpd on
    sudo init 6
    Final command will restart your system.

  7. #7
    Join Date
    Apr 2006
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    417

    Re: Can't Access Apache Server on the Local Network

    1. Is a firewall enabled on the server? If so is it setup correctly? Ubuntu comes with ufw firewall (maybe just on Ubuntu desktop?) type iptables -L on server and see what rules show up. If everything says "policy ACCEPT" then you have no firewall running.

    2. Both computers on the same subnet? Example: Server 192.168.1.33 Desktop 192.168.1.29 (same first 3 octets if using 255.255.255.0 netmask)
    If not on same subnet then then you have to have the correct routing, if using NAT you have to have port forwarding or DMZ for the server.

  8. #8
    Join Date
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    Ubuntu 13.04 Raring Ringtail

    Re: Can't Access Apache Server on the Local Network

    Quote Originally Posted by Serpher View Post
    Code:
    sudo chkconfig --level 5 httpd on
    This responds with 'httpd: unknown service'

  9. #9
    Join Date
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    Ubuntu 13.04 Raring Ringtail

    Re: Can't Access Apache Server on the Local Network

    Quote Originally Posted by bakegoodz View Post
    1. Is a firewall enabled on the server? If so is it setup correctly? Ubuntu comes with ufw firewall (maybe just on Ubuntu desktop?) type iptables -L on server and see what rules show up. If everything says "policy ACCEPT" then you have no firewall running.
    I don't think there's a firewall, but here's the output of the iptables -L command:

    Code:
    Chain INPUT (policy DROP)
    target     prot opt source               destination         
    ufw-before-logging-input  all  --  anywhere             anywhere            
    ufw-before-input  all  --  anywhere             anywhere            
    ufw-after-input  all  --  anywhere             anywhere            
    ufw-after-logging-input  all  --  anywhere             anywhere            
    ufw-reject-input  all  --  anywhere             anywhere            
    ufw-track-input  all  --  anywhere             anywhere            
    
    Chain FORWARD (policy ACCEPT)
    target     prot opt source               destination         
    ufw-before-logging-forward  all  --  anywhere             anywhere            
    ufw-before-forward  all  --  anywhere             anywhere            
    ufw-after-forward  all  --  anywhere             anywhere            
    ufw-after-logging-forward  all  --  anywhere             anywhere            
    ufw-reject-forward  all  --  anywhere             anywhere            
    
    Chain OUTPUT (policy ACCEPT)
    target     prot opt source               destination         
    ufw-before-logging-output  all  --  anywhere             anywhere            
    ufw-before-output  all  --  anywhere             anywhere            
    ufw-after-output  all  --  anywhere             anywhere            
    ufw-after-logging-output  all  --  anywhere             anywhere            
    ufw-reject-output  all  --  anywhere             anywhere            
    ufw-track-output  all  --  anywhere             anywhere            
    
    Chain ufw-after-forward (1 references)
    target     prot opt source               destination         
    
    Chain ufw-after-input (1 references)
    target     prot opt source               destination         
    ufw-skip-to-policy-input  udp  --  anywhere             anywhere            udp dpt:netbios-ns 
    ufw-skip-to-policy-input  udp  --  anywhere             anywhere            udp dpt:netbios-dgm 
    ufw-skip-to-policy-input  tcp  --  anywhere             anywhere            tcp dpt:netbios-ssn 
    ufw-skip-to-policy-input  tcp  --  anywhere             anywhere            tcp dpt:microsoft-ds 
    ufw-skip-to-policy-input  udp  --  anywhere             anywhere            udp dpt:bootps 
    ufw-skip-to-policy-input  udp  --  anywhere             anywhere            udp dpt:bootpc 
    ufw-skip-to-policy-input  all  --  anywhere             anywhere            ADDRTYPE match dst-type BROADCAST 
    
    Chain ufw-after-logging-forward (1 references)
    target     prot opt source               destination         
    
    Chain ufw-after-logging-input (1 references)
    target     prot opt source               destination         
    LOG        all  --  anywhere             anywhere            limit: avg 3/min burst 10 LOG level warning prefix `[UFW BLOCK] ' 
    
    Chain ufw-after-logging-output (1 references)
    target     prot opt source               destination         
    
    Chain ufw-after-output (1 references)
    target     prot opt source               destination         
    
    Chain ufw-before-forward (1 references)
    target     prot opt source               destination         
    ACCEPT     all  --  192.168.0.0/24       anywhere            
    ACCEPT     all  --  anywhere             192.168.0.0/24      
    ufw-user-forward  all  --  anywhere             anywhere            
    
    Chain ufw-before-input (1 references)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            
    ACCEPT     all  --  anywhere             anywhere            
    ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
    ufw-logging-deny  all  --  anywhere             anywhere            state INVALID 
    DROP       all  --  anywhere             anywhere            state INVALID 
    ACCEPT     icmp --  anywhere             anywhere            icmp destination-unreachable 
    ACCEPT     icmp --  anywhere             anywhere            icmp source-quench 
    ACCEPT     icmp --  anywhere             anywhere            icmp time-exceeded 
    ACCEPT     icmp --  anywhere             anywhere            icmp parameter-problem 
    ACCEPT     icmp --  anywhere             anywhere            icmp echo-request 
    ACCEPT     udp  --  anywhere             anywhere            udp spt:bootps dpt:bootpc 
    ufw-not-local  all  --  anywhere             anywhere            
    ACCEPT     all  --  BASE-ADDRESS.MCAST.NET/4  anywhere            
    ACCEPT     all  --  anywhere             BASE-ADDRESS.MCAST.NET/4 
    ufw-user-input  all  --  anywhere             anywhere            
    
    Chain ufw-before-logging-forward (1 references)
    target     prot opt source               destination         
    
    Chain ufw-before-logging-input (1 references)
    target     prot opt source               destination         
    
    Chain ufw-before-logging-output (1 references)
    target     prot opt source               destination         
    
    Chain ufw-before-output (1 references)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            
    ACCEPT     all  --  anywhere             anywhere            
    ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
    ufw-user-output  all  --  anywhere             anywhere            
    
    Chain ufw-logging-allow (0 references)
    target     prot opt source               destination         
    LOG        all  --  anywhere             anywhere            limit: avg 3/min burst 10 LOG level warning prefix `[UFW ALLOW] ' 
    
    Chain ufw-logging-deny (2 references)
    target     prot opt source               destination         
    RETURN     all  --  anywhere             anywhere            state INVALID limit: avg 3/min burst 10 
    LOG        all  --  anywhere             anywhere            limit: avg 3/min burst 10 LOG level warning prefix `[UFW BLOCK] ' 
    
    Chain ufw-not-local (1 references)
    target     prot opt source               destination         
    RETURN     all  --  anywhere             anywhere            ADDRTYPE match dst-type LOCAL 
    RETURN     all  --  anywhere             anywhere            ADDRTYPE match dst-type MULTICAST 
    RETURN     all  --  anywhere             anywhere            ADDRTYPE match dst-type BROADCAST 
    ufw-logging-deny  all  --  anywhere             anywhere            limit: avg 3/min burst 10 
    DROP       all  --  anywhere             anywhere            
    
    Chain ufw-reject-forward (1 references)
    target     prot opt source               destination         
    
    Chain ufw-reject-input (1 references)
    target     prot opt source               destination         
    
    Chain ufw-reject-output (1 references)
    target     prot opt source               destination         
    
    Chain ufw-skip-to-policy-forward (0 references)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            
    
    Chain ufw-skip-to-policy-input (7 references)
    target     prot opt source               destination         
    DROP       all  --  anywhere             anywhere            
    
    Chain ufw-skip-to-policy-output (0 references)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            
    
    Chain ufw-track-input (1 references)
    target     prot opt source               destination         
    
    Chain ufw-track-output (1 references)
    target     prot opt source               destination         
    ACCEPT     tcp  --  anywhere             anywhere            state NEW 
    ACCEPT     udp  --  anywhere             anywhere            state NEW 
    
    Chain ufw-user-forward (1 references)
    target     prot opt source               destination         
    
    Chain ufw-user-input (1 references)
    target     prot opt source               destination         
    
    Chain ufw-user-limit (0 references)
    target     prot opt source               destination         
    LOG        all  --  anywhere             anywhere            limit: avg 3/min burst 5 LOG level warning prefix `[UFW LIMIT BLOCK] ' 
    REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable 
    
    Chain ufw-user-limit-accept (0 references)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            
    
    Chain ufw-user-logging-forward (0 references)
    target     prot opt source               destination         
    
    Chain ufw-user-logging-input (0 references)
    target     prot opt source               destination         
    
    Chain ufw-user-logging-output (0 references)
    target     prot opt source               destination         
    
    Chain ufw-user-output (1 references)
    target     prot opt source               destination
    all machines have the same subnet mask.

    Thanks for answering so far, guys. Keep 'em coming.

  10. #10
    Join Date
    Apr 2009
    Beans
    174
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: Can't Access Apache Server on the Local Network

    Rebump - hope this doesn't cause trouble, but I really need some help with this issue.

    Cheers.

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