issue connecting ctp

Hi all,

i am using last uClinux dist-20160919
with kernel 4.4.0

~ # cat /proc/version

uClinux version 4.4.0-uc0amcore-001 (angelo@jerusalem)

(gcc version 4.5.1 (GCC) ) #2 Sun Dec 4 22:45:04 CET 2016

~ # cat /proc/cpuinfo

CPU: COLDFIRE(m5307)

MMU: none

FPU: none

Clocking: 88.4MHz

BogoMips: 58.98

Calibration: 29491200 loops

~ #

This in my custom board called "amcore" - mcf5307 based.

Very strangely,

- i can ping the local network from the board

- board can be pinged from local network

- board can connect tcp to host pc (by telnet)

but

- i cannot connect to any board service by TCP from

any PC of the local net, also

- i cannot connect TCP also from console, to the same board

127.0.0.1

BusyBox v1.21.0-uc0 (2016-12-04 22:11:16 CET) multi-call binary.

Usage: ps

~ # ps

PID USER VSZ STAT COMMAND

1 root 376 S init

2 root 0 SW [kthreadd]

3 root 0 SW [ksoftirqd/0]

5 root 0 SW< [kworker/0:0H]

6 root 0 SW [kworker/u2:0]

7 root 0 SW [kworker/u3:0]

8 root 0 SW< [writeback]

9 root 0 SW< [crypto]

10 root 0 SW< [bioset]

11 root 0 SW< [kblockd]

12 root 0 SW [kswapd0]

13 root 0 SW [kworker/0:1]

31 root 0 SW< [bioset]

32 root 0 SW< [bioset]

33 root 0 SW< [bioset]

34 root 0 SW< [bioset]

35 root 0 SW< [bioset]

36 root 0 SW< [bioset]

37 root 0 SW< [bioset]

38 root 0 SW< [bioset]

39 root 0 SW< [bioset]

40 root 0 SW< [bioset]

41 root 0 SW< [bioset]

42 root 0 SW< [bioset]

43 root 0 SW< [bioset]

44 root 0 SW< [bioset]

45 root 0 SW< [bioset]

46 root 0 SW< [bioset]

47 root 0 SW< [bioset]

48 root 0 SW< [bioset]

49 root 0 SW< [bioset]

50 root 0 SW< [bioset]

51 root 0 SW< [deferwq]

52 root 0 SW [kworker/u2:1]

67 root 0 SWN [jffs2_gcd_mtd2]

75 root 368 S {exe} httpd -h /home/httpd

77 root 352 S {exe} telnetd -l /bin/sh

79 root 576 S {exe} inetd

80 root 552 S -/bin/sh

81 root 0 SW [kworker/0:2]

84 root 0 SW [kworker/0:0]

86 root 384 R ps

~ #

~ # netstat -ant

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign
Address State

tcp 0 0 0.0.0.0:80
0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:21
0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:23
0.0.0.0:* LISTEN

Mainly, connecting from host side, i see 2 TCP_SYN sent, and

no replies from these services.

Seems like these services can't "accept" SYN.

If any help on what i could try, very appreciated.

Best regards,

angelo dureghello

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