Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Fail to visit homepage
#1

Hi folks,

 

Ubuntu-6.06.1-LAMP-server-amd64

Apache2

Domain: satimis.homelinux.com

(registered with dynsdn.com)

 

Apache is running on this server which is for test purpose.

 

On browser

[/url]http://satimis.homelinux.com

https://satimis.homelinux.com

satimis.homelinux.com

http://satimis.homelinux.com:443

https://satimis.homelinux.com:443

satimis.homelinux.com:443

http://satimis.homelinux.com:8080

https://satimis.homelinux.com:8080

satimis.homelinux.com:8080

 

all of them failed to visit the homepage on /var/www/. They only hung there until time out.

 

Both ports 443 and 8080 are open and not stealth. I have them checked on;

[url=http://www.grc.com/]http://www.grc.com/

SheildsUp

 

# cat /etc/hosts

Code:
127.0.0.1       localhost.localdomain   localhost
192.168.0.100   sever1.example.com   server1
ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts




 

However

//localhost

//localhost:443

//localhost:8080

 

all displayed the homepage.

 

There is no hardware firewall between server and Internet. The server is connected with a CAT5 cable to an ADSL modem. Another end of the ADSL modem is connected to telephone wall socket with a telephone line. The ADSL modem is supplied by ISP and does not require setup.

 

Please help. TIA

 

B.R.

satimis

Reply
#2

are you absolutely SURE that iptables/firewall is not blocking those ports ?

 

and is apache really listening on those ports ?

 

netstat -an |grep tcp

 

should show you what is listening

Reply
#3

Hi anyweb,

 

Quote:are you absolutely SURE that iptables/firewall is not blocking those ports ?
Whether you meant 80, 443 and 8080? 

Quote:and is apache really listening on those ports ? 

netstat -an |grep tcp

 

should show you what is listening
$ netstat -an | grep tcp

Code:
tcp        0      0 0.0.0.0:2049            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:932             0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:45350         0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:747             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:56877           0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:111           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:6000            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:753             0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:46292         0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN
tcp        0      0 58.152.169.2:53         0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:45350         127.0.0.1:43988         ESTABLISHED
tcp        0      0 127.0.0.1:43988         127.0.0.1:45350         ESTABLISHED
tcp        0      0 58.152.169.2:52172      72.14.253.147:80        ESTABLISHED
tcp        0      0 58.152.169.2:54508      72.14.255.147:80        ESTABLISHED
tcp6       0      0 :::993                  :::*                    LISTEN
tcp6       0      0 :::995                  :::*                    LISTEN
tcp6       0      0 :::2222                 :::*                    LISTEN
tcp6       0      0 :::110                  :::*                    LISTEN
tcp6       0      0 :::143                  :::*                    LISTEN
tcp6       0      0 :::6000                 :::*                    LISTEN
tcp6       0      0 :::80                   :::*                    LISTEN
tcp6       0      0 :::8080                 :::*                    LISTEN
tcp6       0      0 :::25                   :::*                    LISTEN
tcp6       0      0 ::1:953                 :::*                    LISTEN
tcp6       0      0 :::443                  :::*                    LISTEN




ports 80, 443, 8080 are listened by tcp6.

 

Tks.

 

 

B.R.

satimis

Reply
#4

yep, meaning that it's listening for ipv6 connections and not 'normal' internet traffic

 

i dont know how you've configured it to do that but it's certaintly not listening on regular port 80

 

checkout my webserver listen properties

 

Quote:tcp 0 0 192.168.0.128:80 0.0.0.0:* LISTEN
 

so, are you using ipv6 at all ? if not re-configure your network settings and/or httpd.conf to listen on your IP and not your IPV6

 

cheers

anyweb

Reply
#5

Hi anyweb,

 

Quote:yep, meaning that it's listening for ipv6 connections and not 'normal' internet traffic 

i dont know how you've configured it to do that but it's certaintly not listening on regular port 80
I haven't configured the network after installing Ubuntu-6.06.1-LAMP-server-amd6.  

I followed;

[/url][url=http://www.howtoforge.com/perfect_setup_ubuntu_6.06]http://www.howtoforge.com/perfect_setup_ubuntu_6.06

 

to build this server for test and absorbing knowhow as well. Neither I configured listening ipv6. I even don't fully understand its application.

 

Quote:so, are you using ipv6 at all ? if not re-configure your network settings and/or httpd.conf to listen on your IP and not your IPV6
Please advise which file shall I edit;

 

$ cat /etc/hosts

Code:
127.0.0.1       localhost.localdomain   localhost
192.168.0.100   sever1.example.com   server1
ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts




 

$ cat /etc/network/interfaces

Code:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback
address 127.0.0.1
netmask 255.0.0.0

auth eth0
iface eth0 inet dhcp

auto dsl-provider
iface dsl-provider inet ppp
provider dsl-provider

# added by pppoeconf
auto eth0
#pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf




 

$ cat /etc/apache2/httpd.conf

Code:
# This is here for backwards compatability reasons and to support
#  installing 3rd party modules directly via apxs2, rather than
#  through the /etc/apache2/mods-{available,enabled} mechanism.
#
#LoadModule mod_placeholder /usr/lib/apache2/modules/mod_placeholder.so

ServerName "localhost"

# httpd.conf listen directive, change "80" to some other value
#Listen 80




No entry on this file.

 

and how to make such a change. TIA

 

 

B.R.

satimis

Reply
#6

try this

 

[/url][url=http://www.ubuntuforums.org/archive/index.php/t-87798.html]http://www.ubuntuforums.org/archive/index.php/t-87798.html

 

and then restart, and do a new netstat -an |grep tcp

 

is apache listening on tcp port 80 then ?

Reply
#7

Hi anyweb,

 

Tks for your URL

 

Performed following test;

 

on /etc/modprobe.d/aliases

 

added follows;

alias net-pf-10 ipv6 off

alias net-pf-10 off

alias ipv6 off

#alias net-pf-10 ipv6

 



Code:
# network protocols ##########################################################
alias net-pf-1  unix
alias net-pf-2  ipv4
alias net-pf-3  ax25
alias net-pf-4  ipx
alias net-pf-5  appletalk
alias net-pf-6  netrom
alias net-pf-7  bridge
alias net-pf-8  atm
alias net-pf-9  x25
alias net-pf-10 ipv6 off
alias net-pf-10 off
alias ipv6 off
#alias net-pf-10 ipv6
alias net-pf-11 rose
alias net-pf-12 decnet
# 13 NETBEUI
alias net-pf-15 af_key
alias net-pf-16 af_netlink
alias net-pf-17 af_packet
# 18 ASH
alias net-pf-19 af_econet
alias net-pf-20 atm
# 22 SNA
alias net-pf-23 irda
alias net-pf-24 pppoe
alias net-pf-25 wanrouter
alias net-pf-26 llc
alias net-pf-31 bluetooth
....




 

Rebooted PC

 

On browser;

satimis.homelinux.com (still failed displaying webpage)

219.79.147.166 (displayed webpage. IP address on connection)

 

$ sudo ping -c 3 satimis.homelinux.com

Code:
Password:
PING satimis.homelinux.com (58.152.181.13) 56(84) bytes of data.

--- satimis.homelinux.com ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2002ms




 

$ sudo netstat -an |grep tcp

Code:
tcp        0      0 0.0.0.0:2049            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:43211         0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:716             0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:111           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:6000            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:913             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:722             0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:36242         0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN
tcp        0      0 219.79.147.166:53       0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:57499           0.0.0.0:*               LISTEN
tcp        0      0 219.79.147.166:42524    72.14.255.104:80        ESTABLISHED
tcp        0      0 219.79.147.166:42608    72.14.255.104:80        ESTABLISHED
tcp        0      0 127.0.0.1:54789         127.0.0.1:36242         ESTABLISHED
tcp        0      0 127.0.0.1:36242         127.0.0.1:54789         ESTABLISHED
tcp6       0      0 :::993                  :::*                    LISTEN
tcp6       0      0 :::995                  :::*                    LISTEN
tcp6       0      0 :::2222                 :::*                    LISTEN
tcp6       0      0 :::110                  :::*                    LISTEN
tcp6       0      0 :::143                  :::*                    LISTEN
tcp6       0      0 :::6000                 :::*                    LISTEN
tcp6       0      0 :::80                   :::*                    LISTEN
tcp6       0      0 :::8080                 :::*                    LISTEN
tcp6       0      0 :::25                   :::*                    LISTEN
tcp6       0      0 ::1:953                 :::*                    LISTEN
tcp6       0      0 :::443                  :::*                    LISTEN




 

Tks.

 

 

B.R.

satimis

Reply
#8

This is a firewall issue, attempting to scan that system shows:

 



Code:
Host n058152181013.netvigator.com (58.152.181.13) appears to be up ... good.
Interesting ports on n058152181013.netvigator.com (58.152.181.13):
PORT     STATE    SERVICE
80/tcp   filtered http
443/tcp  filtered https
8080/tcp filtered http-proxy




 

Obviously there is no IPv6 address, so I can't scan those ports, so all ports are filtered.

 

Look into your firewall setup.

Reply
#9

znx,

 

Quote:Obviously there is no IPv6 address, so I can't scan those ports, so all ports are filtered. 

Look into your firewall setup.
$ sudo iptables -L

Code:
Password:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
TCPMSS     tcp  --  anywhere             anywhere            tcp flags:SYN,RST/S YN tcpmss match 1400:1536 TCPMSS clamp to PMTU

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination




 

$ sudo iptables -L -n -v

Code:
Chain INPUT (policy ACCEPT 10142 packets, 9083K bytes)
pkts bytes target     prot opt in     out     source               destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target     prot opt in     out     source               destination
0     0 TCPMSS     tcp  --  *      ppp0    0.0.0.0/0            0.0.0.0/0           tcp flags:0x06/0x02 tcpmss match 1400:1536 TCPMSS clamp to PMTU

Chain OUTPUT (policy ACCEPT 9482 packets, 1410K bytes)
pkts bytes target     prot opt in     out     source               destination




It is quite strange to me. I can ping 219.79.144.63 which is the IP address on connection. But failed to ping "satimis.homelinux.com"

 

On browser 219.79.144.63 can browse the webpage and "satimis.homelinux.com" failed.

 

I login DYNDNS.COM and found the IP there has been updated 219.79.144.63. It seems DYNDNS.COM has not redirected satimis.homelinux.com to 219.79.144.63

 

My server is off if I'm not working on it.

 

 

B.R.

satimis

Reply
#10

Quote:On browser;satimis.homelinux.com (still failed displaying webpage)

219.79.147.166 (displayed webpage. IP address on connection)

 

$ sudo ping -c 3 satimis.homelinux.com

CODE

 

Password:

PING satimis.homelinux.com (58.152.181.13) 56(84) bytes of data.

 

--- satimis.homelinux.com ping statistics ---

3 packets transmitted, 0 received, 100% packet loss, time 2002ms
 

something about that ^ doesnt look right

 

which ip should you be, the 58 one or the 219 one ?

 

sort that out first then see if you can fix this issue

 

cheers

 

anyweb

Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)