I have had a Networking problem over this past week that I hope someone here has the ability to resolve for me or can show me the procedure that I need to follow in order to resolve this problem myself.
PROBLEM: The problem is my inability to Ping or access my own Hostname. After a Fresh Boot of the System, this is the information that comes up when I attempt to ping my own Hostname.
ping -c 3 sevencardstud.dynaccess.com PING sevencardstud.dynaccess.com (192.168.1.47) 56(84) bytes of data. From sevencardstud (192.168.1.45) icmp_seq=1 Destination Host Unreachable From sevencardstud (192.168.1.45) icmp_seq=2 Destination Host Unreachable From sevencardstud (192.168.1.45) icmp_seq=3 Destination Host Unreachable --- sevencardstud.dynaccess.com ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2015ms pipe 3
I'm able to get to the Internet fine but no one can come into my system successfully. This System has been very stable and I have been running it for Months without any problems till this occured. This problem just came up after a normal re-boot of the System. I don't remember making any changes to my System prior to the Re-boot but that's not to say that I might not have screwed up something unintentially.
As a futher indication of this problem, I have a User written Server running in my system using port 7000 I have not been able to bring this Server up successfully ever since this Re_boot. I get the following error message from the bind command: Server Name= sevencardstud.dynaccess.com, Server Address= 192.168.1.47
bind: Cannot assign requested address BIND ErrorProblem with the Server connecting to the Network
No changes have been made to this Server for over a year.
CONFIGURATION: My System is Ubuntu, Precise, 12.04. My Router/Modem is a Westell DSL 6100.
NETWORK COMMANDS: Following are the output of various Network related commands that I thought might be useful to anyone trying to help me with this problem. Any additional information that you would need, I will gladly supply.
The Westell 6100 Router address is 192.168.1.47
sevencardstud.dynaccess.com has address 192.168.1.1
eth0 Link encap:Ethernet HWaddr 00:1c:c0:ee:06:30 inet addr:192.168.1.45 Bcast:255.255.255.255 Mask:255.255.255.0 inet6 addr: fe80::21c:c0ff:feee:630/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:104 errors:0 dropped:0 overruns:0 frame:0 TX packets:159 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:11102 (11.1 KB) TX bytes:18671 (18.6 KB) Interrupt:40 Base address:0x2000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:240 (240.0 B) TX bytes:240 (240.0 B) vmnet1 Link encap:Ethernet HWaddr 00:50:56:c0:00:01 inet addr:172.16.73.1 Bcast:172.16.73.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:55 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) vmnet8 Link encap:Ethernet HWaddr 00:50:56:c0:00:08 inet addr:192.168.62.1 Bcast:192.168.62.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:56 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default sevencardstud.d 0.0.0.0 UG 100 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 172.16.73.0 * 255.255.255.0 U 0 0 0 vmnet1 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 192.168.62.0 * 255.255.255.0 U 0 0 0 vmnet8
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 UG 100 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0 172.16.73.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.62.0 0.0.0.0 255.255.255.0 U 0 0 0 vmnet8
traceroute to sevencardstud.dynaccess.com (192.168.1.47), 30 hops max, 60 byte packets 1 sevencardstud (192.168.1.45) 2999.270 ms !H 2999.268 ms !H 2999.264 ms !H
Address HWtype HWaddress Flags Mask Iface sevencardstud.dynaccess ether 00:18:3a:2e:ce:d8 C eth0
sudo ufw status
NETWORK RELATED FILES: Here are various files relating to the Network
127.0.0.1 localhost 192.168.1.47 sevencardstud.dynaccess.com sevencardstud
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 192.168.1.1 nameserver 220.127.116.11 nameserver 18.104.22.168 search dynaccess.com
auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp dns-nameservers 22.214.171.124 126.96.36.199
I'm computer literate so any information or directions that someone gave me to solve this problem, I would be able to follow.
Any help that someone can give me, especially if there is a procedure that can be followed to lead to a solution, would be greatly appreciated.
To anyone concerned,
I just want to give you the final results of my solving of this problem.
Ultimately, I had to make the following changes in /etc/network/interfaces I had to change from using dhcp to use static and then using information that I had gotten from the command "ifconfig eth0" I added the following parameters to /etc/network/interfaces
auto eth0 iface eth0 inet static address 192.168.1.47 netmask 255.255.255.0 gateway 192.168.1.1 network 192.168.1.0 broadcast 255.255.255.255 dns-nameservers 188.8.131.52 184.108.40.206
I don't know what changed on my system that would cause me to have to make these changes.
I think maybe something on my Network connection, which is with QWest, may have changed but I will never know for sure.
Any way, this is what I had to do to solve this problem.
I hope this information is of some use to someone here.
Thank you for who ever may have looked at this problem.