1.1.0b fails to negotiate from an old program that uses OpenSSL. The same old program can connect to 1.0.2h without any problem. Here is the debug log of the server. Maybe someone can point me in the right direction what the problem might be. openssl s_server -debug -state -bugs -serverpref -tlsextdebug -accept 25 -cert selfsigned.pem Using default temp DH parameters ACCEPT SSL_accept:before SSL initialization read from 0x14fffe0 [0x1509b53] (5 bytes => 5 (0x5)) 0000 - 80 c8 01 03 01 ..... read from 0x14fffe0 [0x1509b58] (197 bytes => 197 (0xC5)) 0000 - 00 9f 00 00 00 20 00 c0-14 00 c0 0a 00 00 39 00 ..... ........9. 0010 - 00 38 00 c0 0f 00 c0 05-00 00 35 00 00 88 00 00 .8........5..... 0020 - 87 00 00 84 00 c0 12 00-c0 08 00 00 16 00 00 13 ................ 0030 - 00 c0 0d 00 c0 03 00 00-0a 07 00 c0 00 c0 13 00 ................ 0040 - c0 09 00 00 33 00 00 32-00 c0 0e 00 c0 04 00 00 ....3..2........ 0050 - 2f 00 00 9a 00 00 99 00-00 45 00 00 44 00 00 96 /........E..D... 0060 - 00 00 41 00 00 07 05 00-80 03 00 80 00 c0 11 00 ..A............. 0070 - c0 07 00 c0 0c 00 c0 02-00 00 05 00 00 04 01 00 ................ 0080 - 80 00 00 15 00 00 12 00-00 09 06 00 40 00 00 14 ............ at ... 0090 - 00 00 11 00 00 08 00 00-06 04 00 80 00 00 03 02 ................ 00a0 - 00 80 00 00 ff 30 16 85-97 e0 9f e3 aa b1 07 47 .....0.........G 00b0 - 99 a5 7c 38 20 cd 51 39-a1 14 2f 60 50 87 26 62 ..|8 .Q9../`P.&b 00c0 - 0e c8 73 53 86 ..sS. SSL_accept:before SSL initialization SSL_accept:SSLv3/TLS read client hello SSL_accept:SSLv3/TLS write server hello SSL_accept:SSLv3/TLS write certificate SSL_accept:SSLv3/TLS write key exchange write to 0x14fffe0 [0x1512d58] (1281 bytes => 1281 (0x501)) 0000 - 16 03 01 00 51 02 00 00-4d 03 01 2c 21 40 97 a5 ....Q...M..,!@.. 0010 - 67 b2 a4 a7 63 cc f0 58-af 24 a4 ca 61 d8 fa bf g...c..X.$..a... 0020 - a8 50 84 29 20 54 70 1e-f5 8e c2 20 bf ad ba d7 .P.) Tp.... .... 0030 - fa 23 5b 77 eb 0f 30 a2-49 61 f9 ca 9f 28 3f 14 .#[w..0.Ia...(?. 0040 - bb d7 cd cf 5c 1b 69 d8-6b db 0e f7 c0 14 00 00 ....\.i.k....... 0050 - 05 ff 01 00 01 00 16 03-01 03 6e 0b 00 03 6a 00 ..........n...j. 0060 - 03 67 00 03 64 30 82 03-60 30 82 02 48 02 09 00 .g..d0..`0..H... 0070 - c0 99 99 49 38 26 56 04-30 0d 06 09 2a 86 48 86 ...I8&V.0...*.H. 0080 - f7 0d 01 01 05 05 00 30-72 31 0b 30 09 06 03 55 .......0r1.0...U 0090 - 04 06 13 02 41 54 31 0b-30 09 06 03 55 04 08 13 ....AT1.0...U... 00a0 - 02 41 54 31 0b 30 09 06-03 55 04 07 13 02 41 54 .AT1.0...U....AT 00b0 - 31 0d 30 0b 06 03 55 04-0a 13 04 54 45 53 54 31 1.0...U....TEST1 00c0 - 0d 30 0b 06 03 55 04 0b-13 04 54 45 53 54 31 0d .0...U....TEST1. 00d0 - 30 0b 06 03 55 04 03 13-04 54 45 53 54 31 1c 30 0...U....TEST1.0 00e0 - 1a 06 09 2a 86 48 86 f7-0d 01 09 01 16 0d 74 65 ...*.H........te 00f0 - 73 74 40 74 65 73 74 2e-63 6f 6d 30 1e 17 0d 31 st at test.com0...1 0100 - 33 30 31 31 30 31 37 31-38 34 33 5a 17 0d 31 37 30110171843Z..17 0110 - 30 31 30 39 31 37 31 38-34 33 5a 30 72 31 0b 30 0109171843Z0r1.0 0120 - 09 06 03 55 04 06 13 02-41 54 31 0b 30 09 06 03 ...U....AT1.0... 0130 - 55 04 08 13 02 41 54 31-0b 30 09 06 03 55 04 07 U....AT1.0...U.. 0140 - 13 02 41 54 31 0d 30 0b-06 03 55 04 0a 13 04 54 ..AT1.0...U....T 0150 - 45 53 54 31 0d 30 0b 06-03 55 04 0b 13 04 54 45 EST1.0...U....TE 0160 - 53 54 31 0d 30 0b 06 03-55 04 03 13 04 54 45 53 ST1.0...U....TES 0170 - 54 31 1c 30 1a 06 09 2a-86 48 86 f7 0d 01 09 01 T1.0...*.H...... 0180 - 16 0d 74 65 73 74 40 74-65 73 74 2e 63 6f 6d 30 ..test at test.com0 0190 - 82 01 22 30 0d 06 09 2a-86 48 86 f7 0d 01 01 01 .."0...*.H...... 01a0 - 05 00 03 82 01 0f 00 30-82 01 0a 02 82 01 01 00 .......0........ 01b0 - d3 32 55 70 37 65 9c 8d-63 cf 8c 65 fb ac cf 44 .2Up7e..c..e...D 01c0 - 70 33 64 ae 9c db e6 3a-1d c5 be 66 f1 9a d0 79 p3d....:...f...y 01d0 - c3 6b 54 23 0e 3a 62 56-75 b2 c5 73 38 7c 02 4f .kT#.:bVu..s8|.O 01e0 - ee 54 e3 99 e9 23 23 c8-ed f9 56 ea 0d 58 4f c0 .T...##...V..XO. 01f0 - 39 ea 55 57 7d e4 6a 24-25 c3 50 f0 49 79 f7 8a 9.UW}.j$%.P.Iy.. 0200 - 3d f1 a4 dc 5f 0f 3f e4-1c 1c 24 0b 7c 8a 70 ef =..._.?...$.|.p. 0210 - 22 80 bd 63 1d 3f 59 fd-aa 38 1d d4 9b be e8 f8 "..c.?Y..8...... 0220 - b3 6b cd 4f 0b 6f f4 91-db 3c 0a 57 c1 d4 78 f7 .k.O.o...<.W..x. 0230 - 55 b1 f5 d4 f8 e6 27 6e-a6 24 8d d5 b0 59 ad 57 U.....'n.$...Y.W 0240 - 74 78 16 cf 96 4f f3 1b-0f f7 00 2e f2 10 78 a1 tx...O........x. 0250 - 46 2a 70 00 f1 17 ae 9f-c8 79 5f 2c e9 fd bb 93 F*p......y_,.... 0260 - 1d e1 61 08 35 e7 8a 8a-93 16 70 ea d7 34 33 41 ..a.5.....p..43A 0270 - 60 74 ab 9d 0c f3 19 a0-e5 0b 89 54 6f eb e7 de `t.........To... 0280 - 6e 09 b3 fd 8e e7 c4 6c-91 1b a7 c6 d4 72 39 09 n......l.....r9. 0290 - 74 f4 8c c5 6a 44 01 8a-e0 68 44 55 ea 7d 4e 13 t...jD...hDU.}N. 02a0 - 9f 2f ac fc 8a 39 e7 ee-d4 ce 04 00 10 cf 50 6b ./...9........Pk 02b0 - 02 03 01 00 01 30 0d 06-09 2a 86 48 86 f7 0d 01 .....0...*.H.... 02c0 - 01 05 05 00 03 82 01 01-00 01 5e a3 08 b1 67 4f ..........^...gO 02d0 - bc 31 ae 14 3f bf c2 25-5f b3 e2 78 56 60 34 f7 .1..?..%_..xV`4. 02e0 - de ae ad 16 cb a0 b9 3d-66 50 98 e6 33 75 09 63 .......=fP..3u.c 02f0 - 43 02 fd d9 d0 ad 6d 32-8e 54 ef 62 fe cb 05 58 C.....m2.T.b...X 0300 - 3d 85 75 88 80 db 5e 8b-14 36 eb a6 a0 a1 c7 18 =.u...^..6...... 0310 - 8b 87 77 a0 9e dc 6d ca-12 77 2a 8e d6 17 5c 02 ..w...m..w*...\. 0320 - 30 c7 e8 06 fe 2c f9 a5-86 37 84 3d ff f0 ae 48 0....,...7.=...H 0330 - a0 42 5a a0 a3 0e ef fd-49 dc 4d e5 20 91 6b d5 .BZ.....I.M. .k. 0340 - 77 b0 74 61 9f 52 7b 85-26 e1 31 fa 97 b2 17 1b w.ta.R{.&.1..... 0350 - 93 25 8d 78 ed 45 03 95-04 9f 61 73 7a 34 06 14 .%.x.E....asz4.. 0360 - 91 aa 40 1f 3d 99 ec 05-d0 c7 25 a0 26 3d 0d 58 .. at .=.....%.&=.X 0370 - 0f 95 d8 e2 6d 96 5c fc-20 16 03 43 14 54 7a dc ....m.\. ..C.Tz. 0380 - 8d ca 9f 62 86 b1 f0 4a-fc 5b 0e 56 fb 97 6d 43 ...b...J.[.V..mC 0390 - d9 68 66 47 53 7c 63 d4-61 51 05 ba 9f 2b 8d 8a .hfGS|c.aQ...+.. 03a0 - c1 61 51 33 e2 ed 7f db-52 ce 47 0f 84 33 b8 12 .aQ3....R.G..3.. 03b0 - 0c c7 fe 75 9c b2 ab 6a-01 39 05 62 9d 77 d4 f4 ...u...j.9.b.w.. 03c0 - fd 38 89 a4 11 1b 02 e4-e7 16 03 01 01 2a 0c 00 .8...........*.. 03d0 - 01 26 03 00 1d 20 4f b4-34 86 a8 a0 0a 45 5b 80 .&... O.4....E[. 03e0 - b0 79 9e bf 4b 91 ed ae-2c b7 ee 64 ff 39 78 c8 .y..K...,..d.9x. 03f0 - a0 e7 37 e6 a5 13 01 00-1a 9f 48 8e 91 73 55 3e ..7.......H..sU> 0400 - 86 16 04 7e a9 b2 49 16-d6 f6 b3 c2 17 d1 4e 11 ...~..I.......N. 0410 - c4 67 7c 81 e6 49 a2 04-d7 bc 42 04 8c 2a 0f da .g|..I....B..*.. 0420 - a0 75 7d 80 98 5b 1a 0f-e2 48 55 06 95 38 0d a6 .u}..[...HU..8.. 0430 - 84 f0 42 37 6b ee ca e9-e5 7e 13 11 d7 f9 3e f4 ..B7k....~....>. 0440 - b2 ae f1 01 e6 56 ab 7b-46 3b bd 66 de aa ad d7 .....V.{F;.f.... 0450 - 41 59 2b 80 2d 76 98 a0-82 c8 d1 00 05 e8 11 da AY+.-v.......... 0460 - c3 4b c5 15 23 c0 ba 66-8c 9b fc 80 33 c4 e8 f9 .K..#..f....3... 0470 - 1f c7 82 ba b1 58 0c 87-54 42 b4 ce ed 66 4e 4e .....X..TB...fNN 0480 - 3e 51 d4 9f 5f 1e 20 18-b1 5e 6a b9 bb e7 6c b2 >Q.._. ..^j...l. 0490 - 2d 27 52 90 70 9f b0 97-cb 6d 23 0b 9d 1c e6 9d -'R.p....m#..... 04a0 - 71 2a ab 9b a9 42 c9 16-ce a1 86 63 96 fe b2 b6 q*...B.....c.... 04b0 - 49 69 5c 80 7b 9d 3d 40-a8 4a 70 51 0a a1 99 a8 Ii\.{.=@.JpQ.... 04c0 - b8 72 52 39 6b 8c c6 91-13 36 fb d5 fe 7d 2b db .rR9k....6...}+. 04d0 - 45 3d 73 d9 be de fd 40-19 ed ec 41 84 d5 17 a7 E=s.... at ...A.... 04e0 - 6e 32 05 51 5b e6 56 44-40 2b e8 54 d9 36 cc bb n2.Q[.VD at +.T.6.. 04f0 - 77 17 cd f3 7c e7 00 60-16 03 01 00 04 0e w...|..`...... 0501 - <SPACES/NULS> SSL_accept:SSLv3/TLS write server done read from 0x14fffe0 [0x1509b53] (5 bytes => 5 (0x5)) 0000 - 15 03 01 00 02 ..... read from 0x14fffe0 [0x1509b58] (2 bytes => 2 (0x2)) 0000 - 02 50 .P SSL3 alert read:fatal:internal error SSL_accept:error in SSLv3/TLS write server done ERROR 0:error:14094438:SSL routines:ssl3_read_bytes:tlsv1 alert internal error:ssl\record\rec_layer_s3.c:1382:SSL alert number 80 shutting down SSL CONNECTION CLOSED -- Michael Kocum [DataEnter] michael at dataenter.co.at