Aspirin for net

▣ Access-lists ① standard list access-list num_ {remark | deny | permit} source R1(config)#access-list 10 permit 100.100.100.0 0.0.0.255 in inf ip access-group 10 in ② extended list access-list num_ {remark | deny | permit} {ip|tcp|udp|...|} src dst [log] ③ named list R1(config)#ip access-list standard name R1(config-std-nacl)#[sequence num] permit 100.100.100 0.0.0.255 ; sequence num i..

▣ PAT + DNAT ① PAT Inside (Src.A: 100.100.100.X/24, Dst.A: X.X.X.X: *) -> Outside (Src.A: fastethernet0/0, Dst.A: X.X.X.X: *) interface FastEthernet0/0 description ### for Internet ### ip address dhcp ip nat outside ip virtual-reassembly interface FastEthernet0/1 description ### local network ### ip address 100.100.100.1 255.255.255.0 ip nat inside ip virtual-reassembly access-list 10 pe..

▣ default route on DHCP, PPPoE, dialer used environment ① on dialer (pppoe) interface dialer1 ip route 0.0.0.0 0.0.0.0 dialer1 ② on DHCP interface fastethernet0/1 ip address dhcp default route (auto installed) : ③ ignore installing default route from DHCP router (option 3) interface fastethernet0/1 ip address dhcp no ip dhcp client request router ref) http://blog.ioshints.info/2007/06/d..