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Thread: can't open port 80 on ubuntu 12.04 LTS

  1. #1
    Join Date
    Jul 2013
    Beans
    1

    Angry can't open port 80 on ubuntu 12.04 LTS

    Hi peeps, this is my first post, so be gentle

    I run ubuntu 12.04 as host and puppy wary in vbox. Puppy runs hiawatha web server, is tested with previous host (lighthouse) an currently only serves pages on localhost.

    router also has correct port forward, tested with previous setup

    virtual box is in NAT mode with port forward enabled

    and now for ubuntu...

    sudo ufw status
    Code:
    Status: active
    
    To                         Action      From
    --                         ------      ----
    80                         ALLOW       Anywhere
    80                         ALLOW       Anywhere (v6)
    
    80                         ALLOW OUT   Anywhere
    80                         ALLOW OUT   Anywhere (v6)
    sudo iptables -L
    Code:
    Chain INPUT (policy ACCEPT)
    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 DROP)
    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         
    LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
    
    Chain ufw-after-logging-input (1 references)
    target     prot opt source               destination         
    
    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         
    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             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     udp  --  anywhere             224.0.0.251          udp dpt:mdns
    ACCEPT     udp  --  anywhere             239.255.255.250      udp dpt:1900
    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             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         
    DROP       all  --  anywhere             anywhere            
    
    Chain ufw-skip-to-policy-input (7 references)
    target     prot opt source               destination         
    ACCEPT     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         
    ACCEPT     tcp  --  anywhere             anywhere             state NEW
    ACCEPT     udp  --  anywhere             anywhere             state NEW
    
    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         
    ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http
    ACCEPT     udp  --  anywhere             anywhere             udp dpt:http
    
    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         
    ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http
    ACCEPT     udp  --  anywhere             anywhere             udp dpt:http
    entering the lan ip in ubuntu browser gives
    Firefox can't establish a connection to the server at 192.168.1.100.

    what am I doing wrong?

  2. #2
    Join Date
    Dec 2008
    Beans
    10

    Re: can't open port 80 on ubuntu 12.04 LTS

    Are you able to get the page without iptables started?

  3. #3
    Join Date
    Sep 2012
    Location
    United Kingdom
    Beans
    93
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    is trying From what I read, you're trying to access your virtual machine's web server

    From what I read, you're trying to access your virtual machine's web server through port 80 using NAT port forwarding.

    I came across this from the Virtualbox Manual:
    Forwarding host ports < 1024 impossible:
    On Unix-based hosts (e.g. Linux, Solaris, Mac OS X) it is not possible to bind to ports below 1024 from applications that are not run by root. As a result, if you try to configure such a port forwarding, the VM will refuse to start.
    Meaning that unless Virtualbox is ran as root (not recommended!) then your VM isn't able to bind port 80 and pass traffic through the Ubuntu host to the VM.

    A workaround is to try another port above 1024, and access it at http://192.168.1.100:1024 or http://localhost:1024
    Or switch to bridged networking so the VM has access to all network resources and gets its own IP address, if this is suitable for your needs.

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