Hello,
I'm a little confused on which networking option I need to choose when setting up a VM.
I set up two VMs this past weekend both with NAT. Both able to were access the internet.
The first one, I created in my / file system but didn't really have the space so I deleted it.
The second one, I created in /home/kvm, but deleted it as well when I couldn't access it FROM the internet. I had a full backup scheduled for that night and deleted it as well.
I have one of those free domains/DNS from no-ip.com, centos7vm.ddns.net I plan to use as the host name.
I want to be able to access this VM from the internet.
So, how much in the network setup for the new installation do I need to do? Do I need to go with NAT or bridged?
I did four installations last night and could get any of the access the internet with ym. Must have been dumb luck the first two times.
I think it maybe something in iptables from one of the previous installs causing the problem. In ifconfig, I still have virbr0 and virbr1. Didn't have those before.
Here's my iptables:
# Generated by iptables-save v1.4.7 on Tue Sep 27 22:17:35 2016 *mangle :PREROUTING ACCEPT [29980:14598541] :INPUT ACCEPT [4740:1518258] :FORWARD ACCEPT [25240:13080283] :OUTPUT ACCEPT [6749:1743387] :POSTROUTING ACCEPT [30207:14647456] -A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill -A POSTROUTING -o virbr1 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill -A POSTROUTING -o virbr0 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill -A POSTROUTING -o virbr1 -p udp -m udp --dport 68 -j CHECKSUM --checksum-fill COMMIT # Completed on Tue Sep 27 22:17:35 2016 # Generated by iptables-save v1.4.7 on Tue Sep 27 22:17:35 2016 *nat :PREROUTING ACCEPT [1130:73984] :POSTROUTING ACCEPT [20:1245] :OUTPUT ACCEPT [245:19366] -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p tcp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -p udp -j MASQUERADE --to-ports 1024-65535 -A POSTROUTING -s 192.168.122.0/24 ! -d 192.168.122.0/24 -j MASQUERADE -A POSTROUTING -o eth1 -j MASQUERADE -A POSTROUTING -o br0 -j MASQUERADE -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Tue Sep 27 22:17:35 2016 # Generated by iptables-save v1.4.7 on Tue Sep 27 22:17:35 2016 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :IP4BOGONS - [0:0] :f2b-default - [0:0] :f2b-dovecot-pop3imap - [0:0] -A INPUT -m set --match-set blacklistnet src -j DROP -A INPUT -m set --match-set blacklist src -j DROP -A INPUT -s 127.0.0.1/32 -j ACCEPT -A INPUT -m set --match-set block src -j DROP COMMIT # Completed on Tue Sep 27 22:17:35 2016
And my ifconfig:
eth0 Link encap:Ethernet HWaddr 44:37:E6:53:1E:E2 inet addr:192.168.1.110 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::4637:e6ff:fe53:1ee2/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:601486 errors:0 dropped:0 overruns:0 frame:0 TX packets:601818 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:412662650 (393.5 MiB) TX bytes:508284675 (484.7 MiB) Interrupt:20 Memory:fe500000-fe520000
eth1 Link encap:Ethernet HWaddr 00:1B:21:AF:6D:22 inet addr:192.168.0.111 Bcast:255.255.255.255 Mask:255.255.255.0 inet6 addr: fe80::21b:21ff:feaf:6d22/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:260 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:53372 (52.1 KiB)
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:65536 Metric:1 RX packets:44216 errors:0 dropped:0 overruns:0 frame:0 TX packets:44216 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:26786210 (25.5 MiB) TX bytes:26786210 (25.5 MiB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:3 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:162 (162.0 b)
virbr1 Link encap:Ethernet HWaddr 00:00:00:00:00:00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 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:0 (0.0 b) TX bytes:244 (244.0 b)
Currently, the are no VMs installed or running.
Any help would be greatly appreciated!