Hello again,

The problem occurred again, I was not able to access the internet for
almost an hour. so I tried the tests you described:

TEST1: Try pinging to a real IP address instead to eliminate any DNS
problems.
I tried to ping 66.102.7.99 (www.google.com) from the gateway machine:
PING 66.102.7.99 (66.102.7.99): 56 data bytes
^C
--- 66.102.7.99 ping statistics ---
85 packets transmitted, 0 packets received, 100% packet loss

TEST2: Further try pinging to an IP of the "company's network"
PING 172.17.10.54 (172.17.10.54): 56 data bytes
64 bytes from 172.17.10.54: icmp_seq=0 ttl=255 time=3.414 ms
64 bytes from 172.17.10.54: icmp_seq=1 ttl=255 time=0.717 ms
64 bytes from 172.17.10.54: icmp_seq=2 ttl=255 time=0.807 ms
64 bytes from 172.17.10.54: icmp_seq=3 ttl=255 time=0.799 ms
64 bytes from 172.17.10.54: icmp_seq=4 ttl=255 time=0.821 ms
64 bytes from 172.17.10.54: icmp_seq=5 ttl=255 time=0.815 ms
64 bytes from 172.17.10.54: icmp_seq=6 ttl=255 time=0.807 ms
64 bytes from 172.17.10.54: icmp_seq=7 ttl=255 time=0.926 ms
64 bytes from 172.17.10.54: icmp_seq=8 ttl=255 time=0.781 ms
^C
--- 172.17.10.54 ping statistics ---
9 packets transmitted, 9 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.717/1.099/3.414/0.820 ms

TEST3:  In case ICMP is somehow blocked along the lines, try telneting
to port 80
of a web server on the Internet.
Sorry, I don't know how to do this, and by the time I was trying to
find out how, the internet was back again.

I found something interesting that I quite couldn't understand. As I
described before, we have 2 LANs at the office, one for the Company to
access the internet and other machines in the company, and one local
network for our team's development purposes. the 2 are connected via a
gateway running freeBSD. Obviously, The gateway machine has 2 network
interfaces. The interesting thing is that when I plug my machine to the
company network directly I was able to access the internet normally.
But the gateway itself couldn't! could this be a problem with the
gateway itself or an external problem from the main company server?
could it be that the company server is blocking our gateway for
sometime because it has too many requests?

I Appreciate your feedback and thanks in advance.

Mohammad K.


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