TCP and H2 Proxy port range

[Romero027]

It looks like these two proxies are intercepting more traffic than expected. For now, I’ve narrowed the port range, but we should investigate why this is happening and address the underlying issue.

Pointer to code: https://github.com/appnet-org/arpc/blob/main/cmd/proxy-tcp/apply_iptables_local.sh#L32

2025-11-28T14:57:24.551-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-9", "clientAddr": "176.65.148.224:52462", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:57:24.551-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-9", "original_dst": "130.127.133.185:17001", "clientAddr": "176.65.148.224:52462"}
2025-11-28T14:57:24.551-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-9", "target": "130.127.133.185:17001", "clientAddr": "176.65.148.224:52462", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:17001: connect: connection refused"}
2025-11-28T14:58:16.246-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-10", "clientAddr": "35.203.211.200:60786", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:58:16.246-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-10", "original_dst": "130.127.133.185:38880", "clientAddr": "35.203.211.200:60786"}
2025-11-28T14:58:16.246-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-10", "target": "130.127.133.185:38880", "clientAddr": "35.203.211.200:60786", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:38880: connect: connection refused"}
2025-11-28T14:59:28.044-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-11", "clientAddr": "147.185.132.54:58254", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:59:28.044-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-11", "original_dst": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58254"}
2025-11-28T14:59:28.044-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-11", "target": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58254", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:20547: connect: connection refused"}
2025-11-28T14:59:29.083-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-12", "clientAddr": "147.185.132.54:58266", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:59:29.083-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-12", "original_dst": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58266"}
2025-11-28T14:59:29.083-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-12", "target": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58266", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:20547: connect: connection refused"}
2025-11-28T14:59:29.222-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-13", "clientAddr": "147.185.132.54:58268", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:59:29.222-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-13", "original_dst": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58268"}
2025-11-28T14:59:29.222-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-13", "target": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58268", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:20547: connect: connection refused"}
2025-11-28T14:59:30.261-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-14", "clientAddr": "147.185.132.54:58284", "localAddr": "130.127.133.185:15006"}
2025-11-28T14:59:30.261-0500    INFO    proxy-tcp/main.go:248   Using iptables original destination     {"connID": "conn-14", "original_dst": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58284"}
2025-11-28T14:59:30.262-0500    WARN    proxy-tcp/main.go:262   Failed to connect to target     {"connID": "conn-14", "target": "130.127.133.185:20547", "clientAddr": "147.185.132.54:58284", "localAddr": "130.127.133.185:15006", "error": "dial tcp 130.127.133.185:20547: connect: connection refused"}
2025-11-28T15:01:10.167-0500    INFO    proxy-tcp/main.go:239   New TCP connection      {"connID": "conn-15", "clientAddr": "87.120.191.94:33420", "localAddr": "130.127.133.185:15006"}