So, you can ping outside of your network but you can't ping your router,
right? Is your router denying ICMP requests? What kinda box is your
router?
>>Let's start from the "beginning". What's the output of
>ifconfig -a?
>
>[root@mailsrv floppy]# ifconfig -a
>eth0 Link encap:Ethernet HWaddr 00:00:E8:DA:45:4C
> inet addr:216.64.108.206 Bcast:216.64.108.255
>Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:88 errors:0 dropped:0 overruns:0 frame:0
> TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:100
> Interrupt:5 Base address:0xff80
>
>lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:3924 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
>[root@mailsrv floppy]# cat /etc/hosts
>216.64.108.206 mailsrv mailsrv.image-src.com
>127.0.0.1 localhost localhost.localdomain
>216.64.108.124 postoffice postoffice.image-src.com
>216.64.108.207 bandit bandit.image-src.com
>216.64.108.208 ns1 ns1.image-src.com
>216.64.108.209 ns2 ns2.image-src.com
>[root@mailsrv floppy]# cat /etc/resolv.conf
>domain image-src.com
>search image-src.com
>nameserver 216.64.31.76
>nameserver 216.7.161.32
>[root@mailsrv floppy]# route
>Kernel IP routing table
>Destination Gateway Genmask Flags Metric Ref
>Use Iface
>mailsrv * 255.255.255.255 UH 0 0
>0 eth0
>216.64.108.0 * 255.255.255.0 U 0 0
>0 eth0
>127.0.0.0 * 255.0.0.0 U 0 0
>0 lo
>default 216.64.108.1 0.0.0.0 UG 0 0
>0 eth0
>[root@mailsrv floppy}# nslookup www.redhat.com
>Server: ns1.vitts.com
>Address: 216.64.31.76
>
>Non-authoritative answer:
>Name: www.portal.redhat.com
>Addresses: 206.132.41.231, 206.132.41.202, 206.132.41.203
>Aliases: www.redhat.com
>
>[root@mailsrv floppy]# ping www.redhat.com
>ping: unknown host www.redhat.com
>[root@mailsrv floppy]# ping 216.64.108.1
>PING 216.64.108.1 (216.64.108.1) from 216.64.108.206 : 56(84) bytes
>of data
>Segmentation fault (core dumped)
>[root@mailsrv floppy]# ping bandit
>PING bandit (216.64.108.207) from 216.64.108.206 : 56(84) bytes of
>data.
>64 bytes from bandit (216.64.108.207): icmp_seq=0 ttl=255 time=0.9
>ms
>64 bytes from bandit (216.64.108.207): icmp_seq=1 ttl=255 time=0.7
>ms
>64 bytes from bandit (216.64.108.207): icmp_seq=2 ttl=255 time=0.7
>ms
>64 bytes from bandit (216.64.108.207): icmp_seq=3 ttl=255 time=0.7
>ms
>64 bytes from bandit (216.64.108.207): icmp_seq=4 ttl=255 time=0.7
>ms
>64 bytes from bandit (216.64.108.207): icmp_seq=5 ttl=255 time=0.7
>ms
>
>--- bandit ping statistics ---
>6 packets transmitted, 6 packets received, 0% packet loss
>round-trip min/avg/max = 0.7/0.7/0.9 ms
>[root@mailsrv floppy]# ping 216.64.108.206
>PING 216.64.108.206 (216.64.108.206) from 216.64.108.206 : 56(84)
>bytes of data.
>64 bytes from mailsrv (216.64.108.206): icmp_seq=0 ttl=255 time=0.3
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=1 ttl=255 time=0.2
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=2 ttl=255 time=0.1
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=3 ttl=255 time=0.1
>ms
>
>--- 216.64.108.206 ping statistics ---
>4 packets transmitted, 4 packets received, 0% packet loss
>round-trip min/avg/max = 0.1/0.1/0.3 ms
>[root@mailsrv floppy]# ping mailsrv
>PING mailsrv (216.64.108.206) from 216.64.108.206 : 56(84) bytes of
>data.
>64 bytes from mailsrv (216.64.108.206): icmp_seq=0 ttl=255 time=0.4
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=1 ttl=255 time=0.2
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=2 ttl=255 time=0.1
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=3 ttl=255 time=0.1
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=4 ttl=255 time=0.1
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=5 ttl=255 time=0.1
>ms
>64 bytes from mailsrv (216.64.108.206): icmp_seq=6 ttl=255 time=0.1
>ms
>
>--- mailsrv ping statistics ---
>7 packets transmitted, 7 packets received, 0% packet loss
>round-trip min/avg/max = 0.1/0.1/0.4 ms
>[root@mailsrv floppy]# traceroute 216.64.108.1
>traceroute to 216.64.108.1 (216.64.108.1), 30 hops max, 38 byte
>packets
> 1 216.64.108.1 (216.64.108.1) 6.426 ms 6.354 ms 6.258 ms
>[root@mailsrv floppy]# traceroute 206.132.41.231
>traceroute to 206.132.41.231 (206.132.41.231), 30 hops max, 38 byte
>packets
>Segmentation fault (core dumped)
>[root@mailsrv floppy]#
>
>
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