Background: We've had a Moodle Appliance running happily for quite some time. Other machines (virtual and physical) sitting in the DMZ appear to be working fine. A week or two ago, we upgraded our internet bandwidth and router along with it. We have a mikrotik router, and all port forwards appear to be working properly, all NAT/Firewall rules were set up identically to the original router. The machine can ping the outside world (by name or IP), but I can't seem to interract with the internet, otherwise. 'apt-get update' gives me a timed out connection. All i'm seeing in my postfix logs are 'Connection timed out'. I appear to be unable to run a normal traceroute, as well.
I should also mention, that I can access the server from the internet without issue. The webserver is running, and responding to requests, even outside of the LAN.
root@moodle ~# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:50:56:9e:1d:c1
inet addr:10.11.1.50 Bcast:10.11.1.255 Mask:255.255.255.0 inet6 addr: fe80::250:56ff:fe9e:1dc1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1492 Metric:1 RX packets:11066 errors:0 dropped:0 overruns:0 frame:0 TX packets:15816 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1213290 (1.2 MB) TX bytes:5193934 (5.1 MB) Interrupt:19 Base address:0x2000 root@moodle ~# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.11.1.0 * 255.255.255.0 U 0 0 0 eth1 default 10.11.1.1 0.0.0.0 UG 100 0 0 eth1
Anyone have any suggestions? If any additional information might be helpful, just let me know. I realize this may be more of an Ubuntu issue, but I thought I'd start here.
EDIT: It appears that a normal traceroute is successful. A forum post I saw recommended trying 'traceroute -I' and 'traceroute -T'. The latter, is unsuccessful, however.