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2 1 ping traceroute netstat netstat -i netstat -r netstat -s netstat -a ifconfig route nslookup set type=soa set type=ns set type=mx set type=any host/dig host/dig host/dig

3 1 ping ping ping %ping -c PING ( ): 56 data bytes 64 bytes from : icmp_seq=0 ttl=64 time=0.356 ms 64 bytes from : icmp_seq=1 ttl=64 time=0.273 ms 64 bytes from : icmp_seq=2 ttl=64 time=0.262 ms 64 bytes from : icmp_seq=3 ttl=64 time=0.274 ms 64 bytes from : icmp_seq=4 ttl=64 time=0.290 ms ping statistics packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.262/0.291/0.356/0.034 ms PING ( ): 56 data bytes IP ping icmp_seq ICMP ttl 64 bytes from : icmp_seq=0 ttl=64 time=0.356 ms icmp_seq= packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev = 0.262/0.291/0.356/0.034 ms

4 ping 56 1 %ping -c 5 -s PING ( ): 8184 data bytes 8192 bytes from : icmp_seq=0 ttl=64 time=2.145 ms 8192 bytes from : icmp_seq=1 ttl=64 time=2.105 ms 8192 bytes from : icmp_seq=2 ttl=64 time=2.131 ms 8192 bytes from : icmp_seq=3 ttl=64 time=2.094 ms 8192 bytes from : icmp_seq=4 ttl=64 time=2.079 ms ping statistics packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max/stddev = 2.079/2.111/2.145/0.024 ms %ping -c 5 -s PING ( ): 8185 data bytes ping: sendto: Message too long ping: sendto: Message too long ping: sendto: Message too long ping: sendto: Message too long ping: sendto: Message too long ping statistics packets transmitted, 0 packets received, 100% packet loss %sudo ping -c 5 -s PING mail.haruhi.tv ( ): 9000 data bytes 9008 bytes from : icmp_seq=0 ttl=50 time= ms 9008 bytes from : icmp_seq=1 ttl=50 time= ms 9008 bytes from : icmp_seq=3 ttl=50 time= ms 9008 bytes from : icmp_seq=4 ttl=50 time= ms 4

5 --- mail.haruhi.tv ping statistics packets transmitted, 4 packets received, 20% packet loss round-trip min/avg/max/stddev = /63.797/66.752/2.071 ms 1 root OS icpm s eq = 3 ttl 2 traceroute traceroute 1 ping traceroute ping %raceroute traceroute to mail.haruhi.tv ( ), 64 hops max, 40 byte packets ( ) ms ms ms ( ) ms ms ms cc.u-ryukyu.ac.jp ( ) ms ms ms 4 ryukyu-1-g sinet.ad.jp ( ) ms ms ms 5 kyushu-s1-g4-1-0.sinet.ad.jp ( ) ms ms ms 6 osaka-core1-p6-0.sinet.ad.jp ( ) ms ms ms 7 tokyo-core2-p4-0.sinet.ad.jp ( ) ms ms ms 8 tokyo-core1-p13-0.sinet.ad.jp ( ) ms ms ms 9 tokyo-core-ix1-tge1-1.sinet.ad.jp ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms 5

6 ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms ( ) ms ms ms 17 gw2-s firstserver.ne.jp ( ) ms ms ms 18 mail.haruhi.tv ( ) ms ms ms traceroute to mail.haruhi.tv ( ), 64 hops max, 40 byte packets mail.haruhi.tv traceroute traceroute 64 (IP) ( ) ms ms ms IP ms /5.980 ms /1.109 ms traceroute UDP 3 mail.haruhi.tv 3 netstat netstat -i -r -s -a netstat -i %netstat -i Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll lo <Link#1> lo localhost lo localhost :: gif0* 1280 <Link#2>

7 stf0* 1280 <Link#3> en <Link#4> 00:11:24:6e:3b: en <Link#5> 00:11:24:2d:bb: en /20 nw0517.st.ie.u fw <Link#6> 00:11:24:ff:fe:6e:3b: Name Network Address IP Mtu 1 Ipkts Ierrs Opkts Oerrs Coll ( ) netstat -r %netstat -r Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default router.ie.u-ryukyu UGSc en1 127 localhost UCS 0 0 lo0 localhost localhost UH lo /20 link#5 UCS 62 0 en1 kanai.ie.u-ryukyu. 0:13:21:c8:63:3b UHLW en news.ie.u-ryukyu.a 0:13:21:c8:60:c7 UHLW en1 757 shongane.ie.u-ryuk 0:d:93:9e:54:e7 UHLW 0 49 en ( ) nw0656.st.ie.u-ryu 0:14:51:9b:d:ca UHLW 0 7 en1 636 pooh.dit.ie.u-ryuk 0:d:93:80:5a:86 UHLW 1 1 en ozeki.loc.ie.u-ryu 0:a:95:9e:41:b6 UHLW 0 1 en link#5 UCS 0 0 en1 Internet6: Destination Gateway Flags Netif Expire localhost link#1 UHL lo0 7

8 ff01:: localhost U lo0 ff02::%lo0 localhost UC lo0 Internet IPv4 Internet6 IPv6 Destination Gateway Flags Refs Use Netif Expire netstat -s %netstat -s tcp: packets sent data packets ( bytes) 33 data packets (26287 bytes) retransmitted 0 resends initiated by MTU discovery ack-only packets (93 delayed) 0 URG only packets 0 window probe packets 397 window update packets 1618 control packets packets received acks (for bytes) 809 duplicate acks 0 acks for unsent data packets ( bytes) received in-sequence 3 completely duplicate packets (4010 bytes) 0 old duplicate packets 0 packets with some dup. data (0 bytes duped) 61 out-of-order packets (33993 bytes) 8

9 udp: ip: 0 packets (0 bytes) of data after window 0 window probes window update packets 4 packets received after close 0 discarded for bad checksums 0 discarded for bad header offset fields 0 discarded because packet too short 796 connection requests 80 connection accepts 0 bad connection attempts 0 listen queue overflows 872 connections established (including accepts) 1902 connections closed (including 30 drops) 66 connections updated cached RTT on close 66 connections updated cached RTT variance on close 27 connections updated cached ssthresh on close 1023 embryonic connections dropped segments updated rtt (of attempts) 63 retransmit timeouts 0 connections dropped by rexmit timeout 1 persist timeout 0 connections dropped by persist timeout 6 keepalive timeouts 0 keepalive probes sent 4 connections dropped by keepalive correct ACK header predictions correct data packet header predictions datagrams received 0 with incomplete header 0 with bad data length field 0 with bad checksum 147 dropped due to no socket broadcast/multicast datagrams dropped due to no socket 0 dropped due to full socket buffers 0 not for hashed pcb delivered 3053 datagrams output 9

10 icmp: total packets received 0 bad header checksums 0 with size smaller than minimum 0 with data size < data length 0 with ip length > max ip packet size 0 with header length < data size 0 with data length < header length 0 with bad options 0 with incorrect version number 346 fragments received 0 fragments dropped (dup or out of space) 14 fragments dropped after timeout 121 packets reassembled ok packets for this host 5055 packets for unknown/unsupported protocol 0 packets forwarded (0 packets fast forwarded) 1590 packets not forwardable packets received for unknown multicast group 0 redirects sent packets sent from this host 108 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 9 output packets discarded due to no route 5 output datagrams fragmented 35 fragments created 0 datagrams that can t be fragmented 0 tunneling packets that can t find gif 0 datagrams with bad address in header 147 calls to icmp_error 0 errors not generated cuz old message was icmp Output histogram: destination unreachable: messages with bad code fields 0 messages < minimum length 0 bad checksums 0 messages with bad length 0 multicast echo requests ignored 0 multicast timestamp requests ignored 10

11 igmp: ipsec: ip6: Input histogram: echo reply: 9 destination unreachable: 9 time exceeded: message responses generated ICMP address mask responses are disabled 5052 messages received 0 messages received with too few bytes 0 messages received with bad checksum 475 membership queries received 0 membership queries received with invalid field(s) 4577 membership reports received 0 membership reports received with invalid field(s) 4577 membership reports received for groups to which we belong 44 membership reports sent 0 inbound packets processed successfully 0 inbound packets violated process security policy 0 inbound packets with no SA available 0 invalid inbound packets 0 inbound packets failed due to insufficient memory 0 inbound packets failed getting SPI 0 inbound packets failed on AH replay check 0 inbound packets failed on ESP replay check 0 inbound packets considered authentic 0 inbound packets failed on authentication 0 outbound packets processed successfully 0 outbound packets violated process security policy 0 outbound packets with no SA available 0 invalid outbound packets 0 outbound packets failed due to insufficient memory 0 outbound packets with no route 208 total packets received 0 with size smaller than minimum 0 with data size < data length 0 with bad options 0 with incorrect version number 11

12 icmp6: 0 fragments received 0 fragments dropped (dup or out of space) 0 fragments dropped after timeout 0 fragments that exceeded limit 0 packets reassembled ok 208 packets for this host 0 packets forwarded 0 packets not forwardable 0 redirects sent 208 packets sent from this host 0 packets sent with fabricated ip header 0 output packets dropped due to no bufs, etc. 0 output packets discarded due to no route 0 output datagrams fragmented 0 fragments created 0 datagrams that can t be fragmented 0 packets that violated scope rules 0 multicast packets which we don t join Input histogram: UDP: 208 Mbuf statistics: 0 one mbuf two or more mbuf: lo0= one ext mbuf 0 two or more ext mbuf 0 packets whose headers are not continuous 0 tunneling packets that can t find gif 0 packets discarded due to too may headers 0 failures of source address selection source addresses on an outgoing I/F 208 node-locals source addresses of a different scope 208 node-locals 0 forward cache hit 0 forward cache miss 0 calls to icmp_error 0 errors not generated because old message was icmp error or so 12

13 0 errors not generated because rate limitation 0 messages with bad code fields 0 messages < minimum length 0 bad checksums 0 messages with bad length Histogram of error messages to be generated: 0 no route 0 administratively prohibited 0 beyond scope 0 address unreachable 0 port unreachable 0 packet too big 0 time exceed transit 0 time exceed reassembly 0 erroneous header field 0 unrecognized next header 0 unrecognized option 0 redirect 0 unknown 0 message responses generated 0 messages with too many ND options 0 messages with bad ND options 0 bad neighbor solicitation messages 0 bad neighbor advertisement messages 0 bad router solicitation messages 0 bad router advertisement messages 0 bad redirect messages 0 path MTU changes ipsec6: 0 inbound packets processed successfully 0 inbound packets violated process security policy 0 inbound packets with no SA available 0 invalid inbound packets 0 inbound packets failed due to insufficient memory 0 inbound packets failed getting SPI 0 inbound packets failed on AH replay check 0 inbound packets failed on ESP replay check 0 inbound packets considered authentic 0 inbound packets failed on authentication 13

14 rip6: pfkey: 0 outbound packets processed successfully 0 outbound packets violated process security policy 0 outbound packets with no SA available 0 invalid outbound packets 0 outbound packets failed due to insufficient memory 0 outbound packets with no route 0 messages received 0 checksum calcurations on inbound 0 messages with bad checksum 0 messages dropped due to no socket 0 multicast messages dropped due to no socket 0 messages dropped due to full socket buffers 0 delivered 0 datagrams output 0 requests sent to userland 0 bytes sent to userland 0 messages with invalid length field 0 messages with invalid version field 0 messages with invalid message type field 0 messages too short 0 messages with memory allocation failure 0 messages with duplicate extension 0 messages with invalid extension type 0 messages with invalid sa type 0 messages with invalid address extension 0 requests sent from userland 0 bytes sent from userland 0 messages toward single socket 0 messages toward all sockets 0 messages toward registered sockets 0 messages with memory allocation failure tcp 14

15 IP udp IP tcp 10 ip ) 20 icmp IP ping traceroute igmp IP IP ipsec ip6 icmp6 ipsec6 ip icmp ipsec IPv6 rip6 IPv6 15

16 pfkey USAGI netstat -a %netstat -a Active Internet connections (including servers) Proto Recv-Q Send-Q Local Address Foreign Address (state) tcp nw0517.st.ie.u-r.daap ib21.st.ie.u-ryu ESTABLISHED tcp4 0 0 nw0517.st.ie.u-r.daap ib21.st.ie.u-ryu ESTABLISHED tcp4 0 0 nw0517.st.ie.u-r.daap nw0649.st.ie.u-r ESTABLISHED tcp4 0 0 *.* *.* CLOSED tcp4 0 0 localhost.netinfo-loca localhost.1000 ESTABLISHED tcp4 0 0 localhost.1000 localhost.netinfo-loca ESTABLISHED tcp4 0 0 *.* *.* CLOSED tcp4 0 0 *.svrloc *.* LISTEN tcp4 0 0 *.daap *.* LISTEN tcp4 0 0 *.* *.* CLOSED ( ) udp4 0 0 *.* *.* udp4 0 0 localhost.netinfo-loca *.* Active LOCAL (UNIX) domain sockets Address Type Recv-Q Send-Q Inode Conn Refs Nextref Addr 1b28dd0 stream b /var/run/slp_ipc 1fecbb0 stream fecf /var/run/mdnsresponder 1fecf68 stream fecbb fecc38 stream feccc0 0 0 /var/run/mdnsresponder 1feccc0 stream fecc fecd48 stream d9c /private/var/run/cupsd 1fecdd0 stream cf /tmp/.iroha_unix/iroha 1b28220 stream b282a8 0 0 /var/run/mdnsresponder ( ) 1b28880 dgram 0 0 1e fec7f8 0 /var/run/syslog 1b28990 dgram b28cc0 1b28cc0 0 1b28cc0 dgram b b

17 Active Internet connections (including servers) proto Recv-Q Send-Q Local Address IP IP ( ) Foreign Address IP State ESTABLISHED CLOSED LISTEN Active LOCAL (UNIX) domain sockets Type dgram ( ) stream ( ) 17

18 4 ifconfig ifconfig ifconfig -a -a %ifconfig lo0: flags=8049<up,loopback,running,multicast> mtu inet netmask 0xff inet6 ::1 prefixlen 128 gif0: flags=8010<pointopoint,multicast> mtu 1280 stf0: flags=0<> mtu 1280 en0: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 1500 ether 00:11:24:6e:3b:76 media: autoselect (none) status: inactive supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-dupl en1: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 1500 inet netmask 0xfffff000 broadcast ether 00:11:24:2d:bb:76 media: autoselect status: active supported media: autoselect fw0: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 2030 lladdr 00:11:24:ff:fe:6e:3b:76 media: autoselect <full-duplex> status: inactive supported media: autoselect <full-duplex> -a %ifconfig -a lo0: flags=8049<up,loopback,running,multicast> mtu inet netmask 0xff inet6 ::1 prefixlen 128 gif0: flags=8010<pointopoint,multicast> mtu 1280 stf0: flags=0<> mtu 1280 en0: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 1500 ether 00:11:24:6e:3b:76 media: autoselect (none) status: inactive supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-dupl en1: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu

19 inet netmask 0xfffff000 broadcast ether 00:11:24:2d:bb:76 media: autoselect status: active supported media: autoselect fw0: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 2030 lladdr 00:11:24:ff:fe:6e:3b:76 media: autoselect <full-duplex> status: inactive supported media: autoselect <full-duplex> lo1 gif0 IPv6 stf0 IPv6 en0 Ethernet en1 AirMac fw0 FireWire -a ifconfig IP ifconfig %ifconfig en1 en1: flags=8822<broadcast,smart,simplex,multicast> mtu 1500 ether 00:11:24:2d:bb:76 media: autoselect (<unknown type>) status: inactive supported media: autoselect %sudo ifconfig en

20 %ifconfig en1 en1: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 1500 inet netmask 0xffff0000 broadcast ether 00:11:24:2d:bb:76 media: autoselect (<unknown type>) status: inactive supported media: autoselect inet(ipv4) netmask( ) broadcast( ) UP 5 route route netstat -r %sudo route add default route: writing to routing socket: File exists add net default: gateway : File exists %netstat -r Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default router.ie.u-ryukyu UGSc 13 4 en1 %nslookup Name: router.ie.u-ryukyu.ac.jp Address: netstat router.ie.u-r nslookup

21 5.2 8 route netstat -r %sudo route add add net : gateway %netstat -r UGSc 0 0 en1 %sudo route delete / delete net : gateway %netstat -r 6 nslookup nslookup IP IP %nslookup > Server: Address: #53 Non-authoritative answer: canonical name = sv.paniponi-dash.com. Name: sv.paniponi-dash.com 21

22 Address: %nslookup Server: Address: #53 Non-authoritative answer: canonical name = sv.paniponi-dash.com. Name: sv.paniponi-dash.com Address: IP Server: DNS Address: DNS Non-authoritative answer: DNS DNS DNS %nslookup > Server: Address: #53 Non-authoritative answer: in-addr.arpa name = nw0517.st.ie.u-ryukyu.ac.jp. Authoritative answers can be found from: in-addr.arpa nameserver = nirai.ie.u-ryukyu.ac.jp in-addr.arpa nameserver = kanai.ie.u-ryukyu.ac.jp. kanai.ie.u-ryukyu.ac.jp internet address = kanai.ie.u-ryukyu.ac.jp has AAAA address 2001:2f8:1c:d048::850d:3003 nirai.ie.u-ryukyu.ac.jp internet address = nirai.ie.u-ryukyu.ac.jp has AAAA address 2001:2f8:1c:d048::850d:3002 %nslookup Server:

23 Address: #53 Non-authoritative answer: in-addr.arpa name = nw0517.st.ie.u-ryukyu.ac.jp. Authoritative answers can be found from: in-addr.arpa nameserver = kanai.ie.u-ryukyu.ac.jp in-addr.arpa nameserver = nirai.ie.u-ryukyu.ac.jp. kanai.ie.u-ryukyu.ac.jp internet address = kanai.ie.u-ryukyu.ac.jp has AAAA address 2001:2f8:1c:d048::850d:3003 nirai.ie.u-ryukyu.ac.jp internet address = nirai.ie.u-ryukyu.ac.jp has AAAA address 2001:2f8:1c:d048::850d:3002 IP name nameserver DNS internet address IPv4 AAAA address IPv nslookup SOA NS MX %nslookup > Server: Address: #53 Non-authoritative answer: Name: Address: IP Non-authoritative answer: DNS DNS DNS 23

24 6.2.2 set type=soa > set type=soa > Server: Address: #53 Non-authoritative answer: canonical name = sv.negima.ne.jp. Authoritative answers can be found from: negima.ne.jp origin = sv.negima.ne.jp mail addr = postmaster.negima.ne.jp serial = refresh = 60 retry = 3600 expire = minimum = SOA origin mail addr postmaster negima.ne.jp serial refresh retry refresh expire minimum ( ) 24

25 6.2.3 set type=ns > set type=ns > Server: Address: #53 Non-authoritative answer: nameserver = dns-d.iij.ad.jp. nameserver = dns-e.iij.ad.jp. Authoritative answers can be found from: dns-d.iij.ad.jp internet address = dns-e.iij.ad.jp internet address = NS DNS dns-d.iij.ad.jp (IP ) dns-e.iij.ad.jp (IP ) DNS set type=mx > set type=mx > Server: Address: #53 Non-authoritative answer: mail exchanger = 10 shakugan.com. Authoritative answers can be found from: shakugan.com nameserver = ns1.sun3.net. shakugan.com nameserver = sv.dcp.ne.jp. shakugan.com internet address = sv.dcp.ne.jp internet address = ns1.sun3.net internet address =

26 MX (Mail Exchanger) shakugan.com. shakugan.com. Authoritative ans DNS IP set type=any > set type=any > Server: Address: #53 Non-authoritative answer: Name: Address: Authoritative answers can be found from: gunslingergirl.com nameserver = dns12.dion.ne.jp. gunslingergirl.com nameserver = hosting.gb-systems.com. dns12.dion.ne.jp internet address = hosting.gb-systems.com internet address = ANY IP DNS DNS IP nslookup resolv.conf DNS DNS 8 IP %nslookup > server Default server: Address: #53 >server Default server: Address: #53 26

27 > Server: Address: #53 Non-authoritative answer: Name: Address: Name: Address: server DNS DNS BIND9 nslookup host dig host/dig host %host is an alias for sv.paniponi-dash.com. sv.paniponi-dash.com has address %host in-addr.arpa domain name pointer nw0538.st.ie.u-ryukyu.ac.jp. dig %dig ; <<>> DiG <<>> ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ; IN A 27

28 ;; ANSWER SECTION: IN CNAME sv.paniponi-dash.com. sv.paniponi-dash.com IN A ;; AUTHORITY SECTION: paniponi-dash.com IN NS uns02.usen.ad.jp. paniponi-dash.com IN NS sv.starchild.co.jp. ;; ADDITIONAL SECTION: sv.starchild.co.jp IN A uns02.usen.ad.jp IN A ;; Query time: 16 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 13:20: ;; MSG SIZE rcvd: 164 %dig in-addr.arpa ptr ; <<>> DiG <<>> in-addr.arpa ptr ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 4 ;; QUESTION SECTION: ; in-addr.arpa. IN PTR ;; ANSWER SECTION: in-addr.arpa IN PTR nw0538.st.ie.u-ryukyu.ac.jp. ;; AUTHORITY SECTION: in-addr.arpa IN NS nirai.ie.u-ryukyu.ac.jp in-addr.arpa IN NS kanai.ie.u-ryukyu.ac.jp. ;; ADDITIONAL SECTION: kanai.ie.u-ryukyu.ac.jp IN A kanai.ie.u-ryukyu.ac.jp IN AAAA 2001:2f8:1c:d048::850d:

29 nirai.ie.u-ryukyu.ac.jp IN A nirai.ie.u-ryukyu.ac.jp IN AAAA 2001:2f8:1c:d048::850d:3002 ;; Query time: 4 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 13:34: ;; MSG SIZE rcvd: 212 host dig dig dig IP ex) IP.in-addr.arpa ex) in-addr.arpa dig 2 ptr ex) dig in-addr.arpa ptr dig -x IP ptr host/dig host 10 %dig -t SOA ; <<>> DiG <<>> -t SOA ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ; IN SOA ;; AUTHORITY SECTION: saikano.net IN SOA ns1.friend.co.jp. root.saikano.net ;; Query time: 67 msec ;; SERVER: #53( ) 29

30 ;; WHEN: Fri May 12 14:36: ;; MSG SIZE rcvd: 90 %dig -t NS ; <<>> DiG <<>> -t NS ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ; IN NS ;; AUTHORITY SECTION: saikano-movie.com IN SOA ddns2.interlink.or.jp. root.ddns2.interli ;; Query time: 57 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 14:39: ;; MSG SIZE rcvd: 101 %dig -t MX ; <<>> DiG <<>> -t MX ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ; IN MX ;; AUTHORITY SECTION: yume-mahou.com IN SOA ns.namedserver.net. root.namedserver.net. ;; Query time: 57 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 14:52:

31 ;; MSG SIZE rcvd: 95 %dig -t ANY ; <<>> DiG <<>> -t ANY ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 1 ;; QUESTION SECTION: ; IN ANY ;; ANSWER SECTION: IN A IN A ;; AUTHORITY SECTION: geneon-ent.co.jp. 575 IN NS ns2.iprevolution.co.jp. geneon-ent.co.jp. 575 IN NS ns1.internetfacilities.ne.jp. ;; ADDITIONAL SECTION: ns2.iprevolution.co.jp IN A ;; Query time: 29 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 14:53: ;; MSG SIZE rcvd: 157 dig 10 %host -t SOA tok2.com tok2.com SOA dns1.prego.jp. root.dns1.prego.jp %host -t NS name server dns-e.iij.ad.jp. name server dns-d.iij.ad.jp. 31

32 %host -t MX mail is handled by 10 bin-kan.com. %host -t ANY has address t host/dig host 11 host nw017.st.ie.u-ryukyu.ac.jp Using domain server: Name: Address: #53 Aliases: nw017.st.ie.u-ryukyu.ac.jp has address dig 11 dig ; <<>> DiG <<>> ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 1 ;; QUESTION SECTION: ; IN A ;; ANSWER SECTION: IN CNAME dorry.nn.osnr.jp. dorry.nn.osnr.jp IN A ;; AUTHORITY SECTION: nn.osnr.jp IN NS tomo.nn.osnr.jp. 32

33 ;; ADDITIONAL SECTION: tomo.nn.osnr.jp IN A ;; Query time: 15 msec ;; SERVER: #53( ) ;; WHEN: Fri May 12 14:07: ;; MSG SIZE rcvd: 103 host DNS host DNS dig 7 table pdf [1] nagayan/index.php?slab1-network-command [2] UNIX [3] UNIX 68user/unix/ [4] JM Project 33

I j

I j I j06062 19.5.22 19.5.25 19.5.25 1 1 1 ping 3 2 2 ping 4 3 3 traceroute 5 4 4 netstat 5 4.1 netstat -i............................................. 5 4.2 netstat -r.............................................