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Google/Twitter/Facebook are now IP-blocked by the GFW, our approach is focusing on evading connection RST attack. IP-blocking can be only bypassed with the help of proxy-like infrastructure, e.g. proxy, VPN, decoy routing.
Dropbox can be visited with our tool, but you may need to enable DNS forwarding by editing the main.c file. specifically turning on the "opt_protect_dns_protocol" option. Because Dropbox is not IP-blocked but only DNS poisoned.
The main use case of INTANG and TCP-layer censorship evasion techniques are to prevent the GFW from performing Deep Packet Inspection on your traffic, and circumvent content detection/filtering.
When I run INTANG, I can't Ping Google.
cat /var/log/intangd.log
1511877429.351735 [INFO] Current version: 7
1511877429.351822 [INFO] Starting redis server.
1511877429.374581 [INFO] Building sync connection with redis server.
1511877429.374718 [INFO] Sync connection built successfully.
1511877429.374744 [INFO] Connecting to TCP DNS server.
1511877429.374839 [INFO] Loading historical results from redis.
1511877429.375098 [INFO] Loading TTL from redis.
1511877429.375215 [INFO] Async connection built successfully.
1511877429.832840 [INFO] Connected to TCP DNS server.
1511877445.847894 [ERROR] Send keep alive packet failed. errno: 32
1511877445.847988 [INFO] Connecting to TCP DNS server.
1511877445.941228 [INFO] Connected to TCP DNS server.
1511877527.885332 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_3254_3018320055_20480_11
1511877588.039548 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_41401_542641785_20480_10
1511877617.924538 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_17822_542641785_20480_6
1511877650.620333 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_65208_1215242864_20480_12
1511877653.327750 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_2233_1215242864_20480_17
1511877720.714658 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_2745_1215242864_20480_24
1511877721.466569 [INFO] [EVAL] STRATEGY SUCCEEDED. 3289426112_3257_1215242864_20480_17
/tmp/INTANG-master/src/dns.c send_keep_alive_packet() error,How can I solve this problem?
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