on lpdza1, whats the output of netstat -tunlp ? check if the port is listening on the correct interface.
On Sat, Oct 20, 2012 at 9:39 PM, Anuerin Diaz <[email protected]> wrote: > They are using bridged networking. I am using Xen and starting to think > maybe I should have used Virtual box instead. :| > > ciao! > > On Oct 20, 2012 8:26 PM, "Heherson Pagcaliwagan" <[email protected]> wrote: >> >> How is your networking setup? Are the nodes using bridged networking or >> simpla NAT? >> >> Out of curiosity, what's the virt solution you are using?(i.e. kvm, lc, >> openvz, vmware, virtualbox, ...) >> >> --herson >> >> On Oct 20, 2012, at 6:15 PM, Anuerin Diaz <[email protected]> wrote: >> >> Hi, >> >> I have 2 virtualized CentOS machines (lpdza1 and lpdza2) where I am >> setting up clustered WebLogic nodes. The current problem I have is that I >> cannot make the port 7028 in lpdza1 accept external connections. Connection >> from within lpdza1 works but I need lpdza2 to be able to access the admin >> port (7028). I have tried alternately disabling iptables and ip6tables, as >> well as flushing and stopping them to no avail. I have also tried >> configuring and disabling them from the desktop GUI >> (Administration->Securtiy and Firewall settings, >> Administration->Services->restart). I have tried accessing from other >> virtual machines (Ubuntu, WindowsXP) to isolate that it is not a problem on >> the second machine (lpdza2). >> >> What am I missing? Below is the sequence of commands I executed which is >> based from http://wiki.centos.org/HowTos/Network/IPTables. >> >> ====================== >> >> [root@lpdza1 ~]# iptables -L >> Chain INPUT (policy ACCEPT) >> target prot opt source destination >> >> Chain FORWARD (policy ACCEPT) >> target prot opt source destination >> >> Chain OUTPUT (policy ACCEPT) >> target prot opt source destination >> >> [root@lpdza1 ~]# netstat -an | grep 7028 >> tcp 0 0 ::ffff:127.0.0.1:7028 :::* >> LISTEN >> >> [root@lpdza1 ~]# service iptables status >> Table: filter >> Chain INPUT (policy ACCEPT) >> num target prot opt source destination >> >> Chain FORWARD (policy ACCEPT) >> num target prot opt source destination >> >> Chain OUTPUT (policy ACCEPT) >> num target prot opt source destination >> >> >> [root@lpdza1 ~]# iptables -P INPUT ACCEPT >> [root@lpdza1 ~]# iptables -F >> [root@lpdza1 ~]# iptables -A INPUT -p tcp --dport 22 -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -p tcp --dport 7028 -j ACCEPT >> [root@lpdza1 ~]# iptables -P INPUT DROP >> [root@lpdza1 ~]# iptables -P FORWARD DROP >> [root@lpdza1 ~]# iptables -P OUTPUT ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -i lo -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -i eth0 -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -m state --state >> NEW,ESTABLISHED,RELATED -j ACCEPT >> >> [root@lpdza1 ~]# /sbin/service iptables save >> [root@lpdza1 ~]# /sbin/service iptables reload >> [root@lpdza1 ~]# /sbin/service iptables start >> >> [root@lpdza1 ~]# iptables -L -v >> Chain INPUT (policy DROP 0 packets, 0 bytes) >> pkts bytes target prot opt in out source >> destination >> 468 35641 ACCEPT tcp -- any any anywhere >> anywhere tcp dpt:ssh >> 13 708 ACCEPT tcp -- any any anywhere >> anywhere tcp dpt:7028 >> 22 1299 ACCEPT all -- lo any anywhere >> anywhere >> 733 124K ACCEPT all -- eth0 any anywhere >> anywhere >> 0 0 ACCEPT all -- any any anywhere >> anywhere state NEW,RELATED,ESTABLISHED >> >> Chain FORWARD (policy DROP 0 packets, 0 bytes) >> pkts bytes target prot opt in out source >> destination >> >> Chain OUTPUT (policy ACCEPT 1094 packets, 168K bytes) >> pkts bytes target prot opt in out source >> destination >> >> >> [root@lpdza1 ~]# ip6tables -P INPUT ACCEPT >> [root@lpdza1 ~]# ip6tables -F >> [root@lpdza1 ~]# ip6tables -A INPUT -p tcp --dport 22 -j ACCEPT >> [root@lpdza1 ~]# ip6tables -A INPUT -p tcp --dport 7028 -j ACCEPT >> [root@lpdza1 ~]# ip6tables -P INPUT DROP >> [root@lpdza1 ~]# ip6tables -P FORWARD DROP >> [root@lpdza1 ~]# ip6tables -P OUTPUT ACCEPT >> [root@lpdza1 ~]# ip6tables -A INPUT -i lo -j ACCEPT >> [root@lpdza1 ~]# ip6tables -A INPUT -i eth0 -j ACCEPT >> [root@lpdza1 ~]# ip6tables -A INPUT -m state --state >> NEW,ESTABLISHED,RELATED -j ACCEPT >> >> [root@lpdza1 ~]# /sbin/service ip6tables save >> [root@lpdza1 ~]# /sbin/service ip6tables reload >> [root@lpdza1 ~]# /sbin/service ip6tables start >> >> [root@lpdza1 ~]# iptables -P INPUT ACCEPT >> [root@lpdza1 ~]# iptables -F >> [root@lpdza1 ~]# iptables -A INPUT -p tcp --dport 22 -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -p tcp --dport 7028 -j ACCEPT >> [root@lpdza1 ~]# iptables -P INPUT DROP >> [root@lpdza1 ~]# iptables -P FORWARD DROP >> [root@lpdza1 ~]# iptables -P OUTPUT ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -i lo -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -i eth0 -j ACCEPT >> [root@lpdza1 ~]# iptables -A INPUT -m state --state >> NEW,ESTABLISHED,RELATED -j ACCEPT >> >> [root@lpdza1 ~]# /sbin/service iptables save >> [root@lpdza1 ~]# /sbin/service iptables reload >> [root@lpdza1 ~]# /sbin/service iptables start >> >> >> # test from first CentOS machine >> >> [root@lpdza1 ~]# nc -zv -w 2 lpdza1 22 >> Connection to lpdza1 22 port [tcp/ssh] succeeded! >> [root@lpdza1 ~]# nc -zv -w 2 lpdza1 7028 >> Connection to lpdza1 7028 port [tcp/*] succeeded! >> >> #switch to second CentOS machine >> [adiaz@lpdza2 ~]$ ping -c 1 lpdza1 >> PING lpdza1 (192.168.122.185) 56(84) bytes of data. >> 64 bytes from lpdza1 (192.168.122.185): icmp_seq=1 ttl=64 time=0.567 ms >> >> [adiaz@lpdza2 ~]$ nc -zv -w 2 lpdza1 22 >> Connection to lpdza1 22 port [tcp/ssh] succeeded! >> [adiaz@lpdza2 ~]$ nc -zv -w 2 lpdza1 7028 >> nc: connect to lpdza1 port 7028 (tcp) failed: Connection refused >> >> ====================== >> >> Any pointers is very much appreciated. Thank you. >> >> ciao! >> >> -- >> "Programming, an artform that fights back" >> >> Anuerin G. Diaz >> Registered Linux User #246176 >> http://ramfree17.net/capsule , when you absolutely have nothing else >> better to do >> >> _________________________________________________ >> Philippine Linux Users' Group (PLUG) Mailing List >> http://lists.linux.org.ph/mailman/listinfo/plug >> Searchable Archives: http://archives.free.net.ph >> >> >> _________________________________________________ >> Philippine Linux Users' Group (PLUG) Mailing List >> http://lists.linux.org.ph/mailman/listinfo/plug >> Searchable Archives: http://archives.free.net.ph > > > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
