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Diffstat (limited to 'examples/nat-hacks/tg13/iptables-dnat-hack.txt')
| -rw-r--r-- | examples/nat-hacks/tg13/iptables-dnat-hack.txt | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/examples/nat-hacks/tg13/iptables-dnat-hack.txt b/examples/nat-hacks/tg13/iptables-dnat-hack.txt deleted file mode 100644 index caa36a4..0000000 --- a/examples/nat-hacks/tg13/iptables-dnat-hack.txt +++ /dev/null @@ -1,140 +0,0 @@ -Since several services thought our IP's didn't belong to Norway, they sent us -to CDN's in Japan, Africa, and some other weird countries. NRK nett-tv also -didn't think we was in Norway, hence it did not let you stream things. Action -had to be taken. - -We had a /24 from our ISP that we knew would be recognized as Norwegian. We -therefore decided to NAT everything related to those services behind that /24. -We had to figure out all the destination prefixes used for the different -services, and only NAT sessions going to those networks. Tests showed that even -if Origin was being NATed behind "Norwegian IPs", it would still connect to -lol-CDN. We then decided to DNAT all connections to these specific IPs. We -found a suitable Origin-CDN hosted at Telenor/Canal Digital, that would accept -connections. - -In the process of setting this up, we found out that Cisco ASR1k doesn't (at -the time, at least) support more than _one_ DNAT-entry (with the same -destination, at least). iptables to the rescue. - -Two 10gig-interfaces was set up. One as the 'inside', and the other as the -'outside'. - -The solution worked flawlessly, and peaked at about ~2Gbps of traffic. - -## IPTABLES START -*filter -:INPUT DROP [0:0] -:FORWARD ACCEPT [497:117797] -:OUTPUT ACCEPT [0:0] --A INPUT -i lo -j ACCEPT --A INPUT -i gre5 -j ACCEPT --A INPUT -i eth2 -j ACCEPT --A INPUT -p icmp -j ACCEPT --A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT --A INPUT -j DROP --A FORWARD -i eth3 -o gre5 -m state --state RELATED,ESTABLISHED -j ACCEPT --A FORWARD -i gre5 -o eth3 -j ACCEPT --A OUTPUT -o lo -j ACCEPT --A OUTPUT -j ACCEPT -COMMIT -# NAT -*nat -:PREROUTING ACCEPT [1073:112412] -:POSTROUTING ACCEPT [65:16154] -:OUTPUT ACCEPT [2:129] -:nataccept - [0:0] --A PREROUTING -d 23.15.8.0/24 -j DNAT --to-destination 148.123.13.49 --A PREROUTING -d 23.32.241.0/24 -j DNAT --to-destination 148.123.13.49 --A PREROUTING -d 120.29.145.0/24 -j DNAT --to-destination 148.123.13.49 --A PREROUTING -d 124.40.32.0/24 -j DNAT --to-destination 148.123.13.49 --A PREROUTING -d 125.56.200.0/24 -j DNAT --to-destination 148.123.13.49 --A POSTROUTING -s 151.216.0.0/17 -o eth3 -j nataccept --A nataccept -j LOG --log-prefix "iptables nat accept " --A nataccept -j SNAT --to-source 31.169.55.2-31.169.55.254 -COMMIT -## IPTABLES END - - -## Cisco ACL -! -ip access-list extended steamorigin - remark TEST - 10 permit ip 151.216.0.0 0.0.127.255 158.37.91.0 0.0.0.255 - remark ORIGIN - 100 permit ip 151.216.0.0 0.0.127.255 23.15.8.0 0.0.0.255 - 110 permit ip 151.216.0.0 0.0.127.255 23.21.0.0 0.0.255.255 - 120 permit ip 151.216.0.0 0.0.127.255 23.23.0.0 0.0.255.255 - 130 permit ip 151.216.0.0 0.0.127.255 23.32.241.0 0.0.0.255 - 140 permit ip 151.216.0.0 0.0.127.255 23.46.0.0 0.0.255.255 - 300 permit ip 151.216.0.0 0.0.127.255 50.16.0.0 0.0.255.255 - 310 permit ip 151.216.0.0 0.0.127.255 50.17.0.0 0.0.255.255 - 320 permit ip 151.216.0.0 0.0.127.255 54.225.0.0 0.0.255.255 - 400 permit ip 151.216.0.0 0.0.127.255 81.21.146.0 0.0.0.255 - 500 permit ip 151.216.0.0 0.0.127.255 107.20.244.0 0.0.0.255 - 510 permit ip 151.216.0.0 0.0.127.255 120.29.145.0 0.0.0.255 - 520 permit ip 151.216.0.0 0.0.127.255 124.40.32.0 0.0.0.255 - 530 permit ip 151.216.0.0 0.0.127.255 125.56.200.0 0.0.0.255 - 540 permit ip 151.216.0.0 0.0.127.255 164.177.139.0 0.0.0.255 - 550 permit ip 151.216.0.0 0.0.127.255 184.73.0.0 0.0.255.255 - 560 permit ip 151.216.0.0 0.0.127.255 204.236.239.0 0.0.0.255 - remark STEAM - 5100 permit ip 151.216.0.0 0.0.127.255 72.165.61.0 0.0.0.255 - 5110 permit ip 151.216.0.0 0.0.127.255 81.171.115.0 0.0.0.255 - 5120 permit ip 151.216.0.0 0.0.127.255 87.248.217.0 0.0.0.255 - 5300 permit ip 151.216.0.0 0.0.127.255 103.28.54.0 0.0.0.255 - 5310 permit ip 151.216.0.0 0.0.127.255 146.66.152.0 0.0.0.255 - 5500 permit ip 151.216.0.0 0.0.127.255 205.185.220.0 0.0.0.255 - 5510 permit ip 151.216.0.0 0.0.127.255 208.64.200.0 0.0.0.255 - 5520 permit ip 151.216.0.0 0.0.127.255 209.197.0.0 0.0.255.255 - 5530 permit ip 151.216.0.0 0.0.127.255 212.187.201.0 0.0.0.255 - remark NRK-TV - 9000 permit ip 151.216.0.0 0.0.127.255 23.8.146.0 0.0.0.255 - 9010 permit ip 151.216.0.0 0.0.127.255 46.137.77.0 0.0.0.255 - 9020 permit ip 151.216.0.0 0.0.127.255 50.16.209.0 0.0.0.255 - 9030 permit ip 151.216.0.0 0.0.127.255 50.16.231.0 0.0.0.255 - 9040 permit ip 151.216.0.0 0.0.127.255 50.17.243.0 0.0.0.255 - 9050 permit ip 151.216.0.0 0.0.127.255 54.225.239.0 0.0.0.255 - 9060 permit ip 151.216.0.0 0.0.127.255 54.243.145.0 0.0.0.255 - 9070 permit ip 151.216.0.0 0.0.127.255 54.243.68.0 0.0.0.255 - 9080 permit ip 151.216.0.0 0.0.127.255 65.52.155.0 0.0.0.255 - 9090 permit ip 151.216.0.0 0.0.127.255 77.88.106.0 0.0.0.255 - 9100 permit ip 151.216.0.0 0.0.127.255 82.96.58.0 0.0.0.255 - 9110 permit ip 151.216.0.0 0.0.127.255 94.245.71.0 0.0.0.255 - 9120 permit ip 151.216.0.0 0.0.127.255 160.68.205.0 0.0.0.255 - 9130 permit ip 151.216.0.0 0.0.127.255 174.129.219.0 0.0.0.255 - 9140 permit ip 151.216.0.0 0.0.127.255 184.28.17.0 0.0.0.255 - 9150 permit ip 151.216.0.0 0.0.127.255 184.73.220.0 0.0.0.255 - 9160 permit ip 151.216.0.0 0.0.127.255 204.245.63.0 0.0.0.255 - 9170 permit ip 151.216.0.0 0.0.127.255 204.236.234.0 0.0.0.255 -! - -## Cisco route-map -!!!! telegw; -! -route-map nat-madness permit 10 - match ip address steamorigin - set ip next-hop 151.216.0.57 -! -! -interface Port-channel2 - ip policy route-map nat-madness -! -interface Port-channel3 - ip policy route-map nat-madness -! -interface TenGigabitEthernet4/4 - ip policy route-map nat-madness -! - -!!!! nocgw -! -route-map nat-madness permit 10 - match ip address steamorigin - set ip next-hop 151.216.125.6 -! -! -interface vlan 124 - ip policy route-map nat-madness -! -! - |