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Good day can anybody help me I'm installing a new version CentOS (CentOS 5)
after installing and try to ping to other network I cannot ping, I already checked
my newly installed cable and it works fine..
Distribution: debian, gentoo, os x (darwin), ubuntu
nslookup tries to contact a dns server, as this is pointing to your machine itself, of course it will fail
though if you try to ping that ip address, it will not look for a dns server. it will solely have a look at the routing table (which looks alright) to know where to send the packet to (ie. the gateway provided by the isp)
Sorry for the delayed reply but I guess its becoz of my firewall settings I can't understand it I found it at /etc/sysconfig/iptables...
This IP address was newly sent by our ISP I want to use it for our webserver and since it is my first time to set it up I can't find any idea how to fix or begin with but I just finished installing my CentOS 5 linux box..
I think I need to open a ports or something so that I can connect to the public or ping to my network.
Below is my default iptables setup:
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 22.214.171.124 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited