Re: syslog-ng reset connection before data transfer
Evan Rempel <[email protected]> Thu, 2 Mar 2023 11:12:42 -0800
| Newsgroups | gmane.comp.syslog-ng |
|---|---|
| Message-ID | <[email protected]> |
I have never tried to send TLS streams from an RFC3164 source. All of my sources that could support TLS also support RFC5425. What I understand you saying is that you have a source that is sending RFC54524 messages, using TLS but without the frame header. That is completely outside of any RFC combination but that's the story of syslog aggregation :-( I think you could do as you say. Use a network source driver with the syslog-protocol flag and enable TLS. This would have to be done on a special port so as not to conflict with the RFC5425 framed data streams, but it sounds like it would work. Evan. On 2023-03-02 10:32, Dragan Zecevic wrote: > > Hi Steve and Evan, > Sorry for the delay, I was on a sick leave. > Thanks for the ideas. > > It seems you are wright, there is an error in front of connection closed: > Feb 10 15:08:02 xxx syslog-ng[21262]: Invalid frame header; header='' > Feb 10 15:08:02 xxx syslog-ng[21262]: Syslog connection closed; > fd='468', client='AF_INET(x.y.z.w:xxx)', local='AF_INET(0.0.0.0:xxx)' > > It seems there is no frame header in incoming syslog messages. > > I found this in syslog-ng docs: > > syslog-protocol: The syslog-protocol flag instructs the driver to > format the messages according to the new IETF syslog protocol standard > (RFC5424), but without the frame header. If this flag is enabled, > macros used for the message have effect only for the text of the > message, the message header is formatted to the new standard. Note > that this flag is not needed for the syslog driver, and that the > syslog driver automatically adds the frame header to the messages. > > syslog-protocol: The syslog-protocol flag specifies that incoming > messages are expected to be formatted according to the new IETF syslog > protocol standard (RFC5424), but without the frame header. Note that > this flag is not needed for the syslog driver, which handles only > messages that have a frame header. > > As I understand syslog driver for RFC5425 doesn't support messages > without frame header. > > So should I then use network driver with syslog-protocol flag in > combination with RFC3164 messages? > > Thank you. > > Br, > Dragan > > ------------------------------------------------------------------------ > *From:* syslog-ng <[email protected]> on behalf of > Evan Rempel <[email protected]> > *Sent:* Thursday, February 23, 2023 2:17 PM > *To:* [email protected] <[email protected]> > *Subject:* Re: [syslog-ng] syslog-ng reset connection before data > transfer > I had an issue with they symptom of the connection closing as the > first message was sent. If eventually came down to the packet framing. > When using syslog protocol (RFC 5424/5425) you must use framing. > Without it syslog-ng drops the connection. > > As Steve says, look for errors from the receiving syslog-ng process. > There should be an error immediately preceding the closed connection. > > Evan. > > On 2023-02-23 05:33, Steve Bernacki wrote: >> >> Dragan, >> >> >> 1) Are you seeing any error or diagnostic message immediately before >> "Syslog connection closed"? If a log message immediately precedes >> this message with the same timestamp, it's usually related even >> though there's nothing in the two entries to tie them together. >> >> >> 2) Are the clients running syslog-ng? >> >> >> 3) Any other similarities with the clients that are not working, e.g. >> on the same network segment etc? Could there be some type of network >> IDS device sniping these connections? >> >> >> Steve >> >> >> On 2/23/2023 3:40 AM, Dragan Zecevic wrote: >>> >>> >>> Hi again, >>> Does somebody have an idea on this? >>> >>> Thank you. >>> >>> Br, >>> Dragan >>> >>> ------------------------------------------------------------------------ >>> *From:* syslog-ng <[email protected]> >>> <mailto:[email protected]> on behalf of Dragan >>> Zecevic <[email protected]> <mailto:[email protected]> >>> *Sent:* Tuesday, February 14, 2023 2:33 PM >>> *To:* [email protected] <mailto:[email protected]> >>> <[email protected]> <mailto:[email protected]> >>> *Subject:* [syslog-ng] syslog-ng reset connection before data transfer >>> Hi everybody, >>> I hope you are well. >>> >>> I was hoping if you can help me with some issue. >>> I am trying to collect logs from some servers via syslog. >>> TLS session seems to be established - handshake, certs, ciphers all >>> looking ok. >>> But when data need to be send it seems syslog-ng server disconnects >>> the session from some reason. >>> >>> In /var/log/messages I can only see start/stop messages even after >>> turning on verbose logging: >>> >>> Feb 10 16:11:48 xxx syslog-ng[21262]: Syslog connection accepted; >>> fd='175', client='AF_INET(x.y.w.z:34986)', local='AF_INET(0.0.0.0:xxx)' >>> Feb 10 16:11:49 xxx syslog-ng[21262]: Syslog connection closed; >>> fd='175', client='AF_INET(x.y.w.z:34986)', local='AF_INET(0.0.0.0:xxx)' >>> >>> This is the configuration I am using: >>> >>> source s_xxx { >>> syslog( >>> ip(0.0.0.0) >>> port(xxx) >>> transport("tls") >>> tls( >>> key-file("/etc/syslog-ng/key.d/xxx.key") >>> cert-file("/etc/syslog-ng/cert.d/xxx.cer") >>> ca-dir("/etc/syslog-ng/ca.d") >>> peer-verify(required-trusted) >>> cipher-suite("xxx...xxx") >>> ) >>> flags(store-raw-message) >>> ); >>> }; >>> >>> filter filter_xxx { >>> >>> host("xxx") ... or host("xxx"); >>> }; >>> >>> destination folder_xxx { >>> >>> file( >>> "/var/log/xxx/${R_YEAR}${R_MONTH}${R_DAY}/${SOURCEIP}_${HOST}_${R_HOUR}.log" >>> template("${RAWMSG}\n") >>> dir-group(xxx) >>> dir-perm(0650) >>> group(xxx) >>> ); >>> }; >>> >>> log { >>> source(s_xxx); filter(filter_xxx); destination(folder_xxx); >>> flags(flow-control); >>> }; >>> >>> >>> And bellow is last part of the session captured with tcpdump from >>> source side. >>> It is interesting to me that there is 1h offset comparing to >>> /var/log/messages on syslog-ng. Src and dst server are in same >>> environment. >>> >>> >>> 24 2023-02-10 >>> 15:11:49,073335 x.y.w.z x.y.w.z TLSv1.2 445 Application >>> Data >>> Frame 24: 445 bytes on wire (3560 bits), 445 bytes captured (3560 bits) >>> Encapsulation type: Ethernet (1) >>> Arrival Time: Feb 10, 2023 15:11:49.073335000 Central Europe >>> Standard Time >>> [Time shift for this packet: 0.000000000 seconds] >>> Epoch Time: 1676038309.073335000 seconds >>> [Time delta from previous captured frame: 0.906559000 seconds] >>> [Time delta from previous displayed frame: 0.906559000 seconds] >>> [Time since reference or first frame: 6.775677000 seconds] >>> Frame Number: 24 >>> Frame Length: 445 bytes (3560 bits) >>> Capture Length: 445 bytes (3560 bits) >>> [Frame is marked: False] >>> [Frame is ignored: False] >>> [Protocols in frame: eth:ethertype:ip:tcp:tls] >>> [Coloring Rule Name: TCP] >>> [Coloring Rule String: tcp] >>> Ethernet II, Src: xxx, Dst: xxx >>> Destination: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Source: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Type: IPv4 (0x0800) >>> Internet Protocol Version 4, Src: x.y.z.w, Dst: x.y.z.w >>> 0100 .... = Version: 4 >>> .... 0101 = Header Length: 20 bytes (5) >>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) >>> 0000 00.. = Differentiated Services Codepoint: Default (0) >>> .... ..00 = Explicit Congestion Notification: Not >>> ECN-Capable Transport (0) >>> Total Length: 431 >>> Identification: 0xeebc (61116) >>> 010. .... = Flags: 0x2, Don't fragment >>> 0... .... = Reserved bit: Not set >>> .1.. .... = Don't fragment: Set >>> ..0. .... = More fragments: Not set >>> ...0 0000 0000 0000 = Fragment Offset: 0 >>> Time to Live: 64 >>> Protocol: TCP (6) >>> Header Checksum: 0x0a89 [validation disabled] >>> [Header checksum status: Unverified] >>> Source Address: x.y.z.w >>> Destination Address: x.y.z.w >>> Transmission Control Protocol, Src Port: 34986, Dst Port: xxx, Seq: >>> 2380, Ack: 5750, Len: 391 >>> Source Port: 34986 >>> Destination Port: xxx >>> [Stream index: 1] >>> [Conversation completeness: Complete, WITH_DATA (63)] >>> [TCP Segment Len: 391] >>> Sequence Number: 2380 (relative sequence number) >>> Sequence Number (raw): 2630184540 >>> [Next Sequence Number: 2771 (relative sequence number)] >>> Acknowledgment Number: 5750 (relative ack number) >>> Acknowledgment number (raw): 2509794849 >>> 0101 .... = Header Length: 20 bytes (5) >>> Flags: 0x018 (PSH, ACK) >>> 000. .... .... = Reserved: Not set >>> ...0 .... .... = Accurate ECN: Not set >>> .... 0... .... = Congestion Window Reduced: Not set >>> .... .0.. .... = ECN-Echo: Not set >>> .... ..0. .... = Urgent: Not set >>> .... ...1 .... = Acknowledgment: Set >>> .... .... 1... = Push: Set >>> .... .... .0.. = Reset: Not set >>> .... .... ..0. = Syn: Not set >>> .... .... ...0 = Fin: Not set >>> [TCP Flags: ·······AP···] >>> Window: 318 >>> [Calculated window size: 40704] >>> [Window size scaling factor: 128] >>> Checksum: 0x41a5 [unverified] >>> [Checksum Status: Unverified] >>> Urgent Pointer: 0 >>> [Timestamps] >>> [Time since first frame in this TCP stream: 1.007330000 seconds] >>> [Time since previous frame in this TCP stream: 0.906559000 >>> seconds] >>> [SEQ/ACK analysis] >>> [iRTT: 0.003010000 seconds] >>> [Bytes in flight: 391] >>> [Bytes sent since last PSH flag: 391] >>> TCP payload (391 bytes) >>> Transport Layer Security >>> TLSv1.2 Record Layer: Application Data Protocol: Application Data >>> Content Type: Application Data (23) >>> Version: TLS 1.2 (0x0303) >>> Length: 386 >>> Encrypted Application Data: >>> 000000000000000146f17ff0e884c81f9317ba9e01c3b48763944e3905fb27fc96ce76fc… >>> >>> >>> 25 2023-02-10 >>> 15:11:49,076214 x.y.z.w x.y.z.w TCP 60 xxx → 34986 >>> [FIN, ACK] Seq=5750 Ack=2771 Win=65536 Len=0 >>> Frame 25: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) >>> Encapsulation type: Ethernet (1) >>> Arrival Time: Feb 10, 2023 15:11:49.076214000 Central Europe >>> Standard Time >>> [Time shift for this packet: 0.000000000 seconds] >>> Epoch Time: 1676038309.076214000 seconds >>> [Time delta from previous captured frame: 0.002879000 seconds] >>> [Time delta from previous displayed frame: 0.002879000 seconds] >>> [Time since reference or first frame: 6.778556000 seconds] >>> Frame Number: 25 >>> Frame Length: 60 bytes (480 bits) >>> Capture Length: 60 bytes (480 bits) >>> [Frame is marked: False] >>> [Frame is ignored: False] >>> [Protocols in frame: eth:ethertype:ip:tcp] >>> [Coloring Rule Name: TCP SYN/FIN] >>> [Coloring Rule String: tcp.flags & 0x02 || tcp.flags.fin == 1] >>> Ethernet II, Src: xxx, Dst: xxx >>> Destination: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Source: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Type: IPv4 (0x0800) >>> Trailer: 000085725dce >>> Internet Protocol Version 4, Src: x.y.z.w, Dst: x.y.z.w >>> 0100 .... = Version: 4 >>> .... 0101 = Header Length: 20 bytes (5) >>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) >>> 0000 00.. = Differentiated Services Codepoint: Default (0) >>> .... ..00 = Explicit Congestion Notification: Not >>> ECN-Capable Transport (0) >>> Total Length: 40 >>> Identification: 0xea10 (59920) >>> 010. .... = Flags: 0x2, Don't fragment >>> 0... .... = Reserved bit: Not set >>> .1.. .... = Don't fragment: Set >>> ..0. .... = More fragments: Not set >>> ...0 0000 0000 0000 = Fragment Offset: 0 >>> Time to Live: 52 >>> Protocol: TCP (6) >>> Header Checksum: 0x1cbc [validation disabled] >>> [Header checksum status: Unverified] >>> Source Address: x.y.z.w >>> Destination Address: x.y.z.w >>> Transmission Control Protocol, Src Port: xxx, Dst Port: 34986, Seq: >>> 5750, Ack: 2771, Len: 0 >>> Source Port: xxx >>> Destination Port: 34986 >>> [Stream index: 1] >>> [Conversation completeness: Complete, WITH_DATA (63)] >>> [TCP Segment Len: 0] >>> Sequence Number: 5750 (relative sequence number) >>> Sequence Number (raw): 2509794849 >>> [Next Sequence Number: 5751 (relative sequence number)] >>> Acknowledgment Number: 2771 (relative ack number) >>> Acknowledgment number (raw): 2630184931 >>> 0101 .... = Header Length: 20 bytes (5) >>> Flags: 0x011 (FIN, ACK) >>> 000. .... .... = Reserved: Not set >>> ...0 .... .... = Accurate ECN: Not set >>> .... 0... .... = Congestion Window Reduced: Not set >>> .... .0.. .... = ECN-Echo: Not set >>> .... ..0. .... = Urgent: Not set >>> .... ...1 .... = Acknowledgment: Set >>> .... .... 0... = Push: Not set >>> .... .... .0.. = Reset: Not set >>> .... .... ..0. = Syn: Not set >>> .... .... ...1 = Fin: Set >>> [TCP Flags: ·······A···F] >>> Window: 4 >>> [Calculated window size: 65536] >>> [Window size scaling factor: 16384] >>> Checksum: 0xc512 [unverified] >>> [Checksum Status: Unverified] >>> Urgent Pointer: 0 >>> [Timestamps] >>> [Time since first frame in this TCP stream: 1.010209000 seconds] >>> [Time since previous frame in this TCP stream: 0.002879000 >>> seconds] >>> [SEQ/ACK analysis] >>> [This is an ACK to the segment in frame: 24] >>> [The RTT to ACK the segment was: 0.002879000 seconds] >>> [iRTT: 0.003010000 seconds] >>> >>> >>> 26 2023-02-10 >>> 15:11:49,117776 x.y.z.w x.y.z.w TCP 54 34986 → xxx >>> [ACK] Seq=2771 Ack=5751 Win=40704 Len=0 >>> Frame 26: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) >>> Encapsulation type: Ethernet (1) >>> Arrival Time: Feb 10, 2023 15:11:49.117776000 Central Europe >>> Standard Time >>> [Time shift for this packet: 0.000000000 seconds] >>> Epoch Time: 1676038309.117776000 seconds >>> [Time delta from previous captured frame: 0.041562000 seconds] >>> [Time delta from previous displayed frame: 0.041562000 seconds] >>> [Time since reference or first frame: 6.820118000 seconds] >>> Frame Number: 26 >>> Frame Length: 54 bytes (432 bits) >>> Capture Length: 54 bytes (432 bits) >>> [Frame is marked: False] >>> [Frame is ignored: False] >>> [Protocols in frame: eth:ethertype:ip:tcp] >>> [Coloring Rule Name: TCP] >>> [Coloring Rule String: tcp] >>> Ethernet II, Src: Mellanox_69:6f:47 (1c:34:da:69:6f:47), Dst: >>> ICANNIAN_00:40:20 (00:00:5e:00:40:20) >>> Destination: ICANNIAN_00:40:20 (00:00:5e:00:40:20) >>> Address: ICANNIAN_00:40:20 (00:00:5e:00:40:20) >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Source: Mellanox_69:6f:47 (1c:34:da:69:6f:47) >>> Address: Mellanox_69:6f:47 (1c:34:da:69:6f:47) >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Type: IPv4 (0x0800) >>> Internet Protocol Version 4, Src: x.y.z.w, Dst: x.y.z.w >>> 0100 .... = Version: 4 >>> .... 0101 = Header Length: 20 bytes (5) >>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) >>> 0000 00.. = Differentiated Services Codepoint: Default (0) >>> .... ..00 = Explicit Congestion Notification: Not >>> ECN-Capable Transport (0) >>> Total Length: 40 >>> Identification: 0xeebd (61117) >>> 010. .... = Flags: 0x2, Don't fragment >>> 0... .... = Reserved bit: Not set >>> .1.. .... = Don't fragment: Set >>> ..0. .... = More fragments: Not set >>> ...0 0000 0000 0000 = Fragment Offset: 0 >>> Time to Live: 64 >>> Protocol: TCP (6) >>> Header Checksum: 0x0c0f [validation disabled] >>> [Header checksum status: Unverified] >>> Source Address: x.y.z.w >>> Destination Address: x.y.z.w >>> Transmission Control Protocol, Src Port: 34986, Dst Port: xxx, Seq: >>> 2771, Ack: 5751, Len: 0 >>> Source Port: 34986 >>> Destination Port: xxx >>> [Stream index: 1] >>> [Conversation completeness: Complete, WITH_DATA (63)] >>> [TCP Segment Len: 0] >>> Sequence Number: 2771 (relative sequence number) >>> Sequence Number (raw): 2630184931 >>> [Next Sequence Number: 2771 (relative sequence number)] >>> Acknowledgment Number: 5751 (relative ack number) >>> Acknowledgment number (raw): 2509794850 >>> 0101 .... = Header Length: 20 bytes (5) >>> Flags: 0x010 (ACK) >>> 000. .... .... = Reserved: Not set >>> ...0 .... .... = Accurate ECN: Not set >>> .... 0... .... = Congestion Window Reduced: Not set >>> .... .0.. .... = ECN-Echo: Not set >>> .... ..0. .... = Urgent: Not set >>> .... ...1 .... = Acknowledgment: Set >>> .... .... 0... = Push: Not set >>> .... .... .0.. = Reset: Not set >>> .... .... ..0. = Syn: Not set >>> .... .... ...0 = Fin: Not set >>> [TCP Flags: ·······A····] >>> Window: 318 >>> [Calculated window size: 40704] >>> [Window size scaling factor: 128] >>> Checksum: 0x401e [unverified] >>> [Checksum Status: Unverified] >>> Urgent Pointer: 0 >>> [Timestamps] >>> [Time since first frame in this TCP stream: 1.051771000 seconds] >>> [Time since previous frame in this TCP stream: 0.041562000 >>> seconds] >>> [SEQ/ACK analysis] >>> [This is an ACK to the segment in frame: 25] >>> [The RTT to ACK the segment was: 0.041562000 seconds] >>> [iRTT: 0.003010000 seconds] >>> >>> >>> >>> 27 2023-02-10 >>> 15:12:10,183395 x.y.w.z x.y.w.z TLSv1.2 457 Application >>> Data >>> Frame 27: 457 bytes on wire (3656 bits), 457 bytes captured (3656 bits) >>> Encapsulation type: Ethernet (1) >>> Arrival Time: Feb 10, 2023 15:12:10.183395000 Central Europe >>> Standard Time >>> [Time shift for this packet: 0.000000000 seconds] >>> Epoch Time: 1676038330.183395000 seconds >>> [Time delta from previous captured frame: 21.065619000 seconds] >>> [Time delta from previous displayed frame: 21.065619000 seconds] >>> [Time since reference or first frame: 27.885737000 seconds] >>> Frame Number: 27 >>> Frame Length: 457 bytes (3656 bits) >>> Capture Length: 457 bytes (3656 bits) >>> [Frame is marked: False] >>> [Frame is ignored: False] >>> [Protocols in frame: eth:ethertype:ip:tcp:tls] >>> [Coloring Rule Name: TCP] >>> [Coloring Rule String: tcp] >>> Ethernet II, Src: xxx, Dst: xxx >>> Destination: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Source: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Type: IPv4 (0x0800) >>> Internet Protocol Version 4, Src: x.y.w.z, Dst: x.y.w.z >>> 0100 .... = Version: 4 >>> .... 0101 = Header Length: 20 bytes (5) >>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) >>> 0000 00.. = Differentiated Services Codepoint: Default (0) >>> .... ..00 = Explicit Congestion Notification: Not >>> ECN-Capable Transport (0) >>> Total Length: 443 >>> Identification: 0xeebe (61118) >>> 010. .... = Flags: 0x2, Don't fragment >>> 0... .... = Reserved bit: Not set >>> .1.. .... = Don't fragment: Set >>> ..0. .... = More fragments: Not set >>> ...0 0000 0000 0000 = Fragment Offset: 0 >>> Time to Live: 64 >>> Protocol: TCP (6) >>> Header Checksum: 0x0a7b [validation disabled] >>> [Header checksum status: Unverified] >>> Source Address: x.y.w.z >>> Destination Address: x.y.w.z >>> Transmission Control Protocol, Src Port: 34986, Dst Port: xxx, Seq: >>> 2771, Ack: 5751, Len: 403 >>> Source Port: 34986 >>> Destination Port: xxx >>> [Stream index: 1] >>> [Conversation completeness: Complete, WITH_DATA (63)] >>> [TCP Segment Len: 403] >>> Sequence Number: 2771 (relative sequence number) >>> Sequence Number (raw): 2630184931 >>> [Next Sequence Number: 3174 (relative sequence number)] >>> Acknowledgment Number: 5751 (relative ack number) >>> Acknowledgment number (raw): 2509794850 >>> 0101 .... = Header Length: 20 bytes (5) >>> Flags: 0x018 (PSH, ACK) >>> 000. .... .... = Reserved: Not set >>> ...0 .... .... = Accurate ECN: Not set >>> .... 0... .... = Congestion Window Reduced: Not set >>> .... .0.. .... = ECN-Echo: Not set >>> .... ..0. .... = Urgent: Not set >>> .... ...1 .... = Acknowledgment: Set >>> .... .... 1... = Push: Set >>> .... .... .0.. = Reset: Not set >>> .... .... ..0. = Syn: Not set >>> .... .... ...0 = Fin: Not set >>> [TCP Flags: ·······AP···] >>> Window: 318 >>> [Calculated window size: 40704] >>> [Window size scaling factor: 128] >>> Checksum: 0x41b1 [unverified] >>> [Checksum Status: Unverified] >>> Urgent Pointer: 0 >>> [Timestamps] >>> [Time since first frame in this TCP stream: 22.117390000 >>> seconds] >>> [Time since previous frame in this TCP stream: 21.065619000 >>> seconds] >>> [SEQ/ACK analysis] >>> [iRTT: 0.003010000 seconds] >>> [Bytes in flight: 403] >>> [Bytes sent since last PSH flag: 403] >>> TCP payload (403 bytes) >>> Transport Layer Security >>> TLSv1.2 Record Layer: Application Data Protocol: Application Data >>> Content Type: Application Data (23) >>> Version: TLS 1.2 (0x0303) >>> Length: 398 >>> Encrypted Application Data: >>> 0000000000000002be4aae5822b205849734ad881717619991987bc9817d0b0417781265… >>> >>> >>> 28 2023-02-10 >>> 15:12:10,185930 x.y.w.z x.y.w.z TCP 60 xxx → 34986 >>> [RST] Seq=5751 Win=0 Len=0 >>> Frame 28: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) >>> Encapsulation type: Ethernet (1) >>> Arrival Time: Feb 10, 2023 15:12:10.185930000 Central Europe >>> Standard Time >>> [Time shift for this packet: 0.000000000 seconds] >>> Epoch Time: 1676038330.185930000 seconds >>> [Time delta from previous captured frame: 0.002535000 seconds] >>> [Time delta from previous displayed frame: 0.002535000 seconds] >>> [Time since reference or first frame: 27.888272000 seconds] >>> Frame Number: 28 >>> Frame Length: 60 bytes (480 bits) >>> Capture Length: 60 bytes (480 bits) >>> [Frame is marked: False] >>> [Frame is ignored: False] >>> [Protocols in frame: eth:ethertype:ip:tcp] >>> [Coloring Rule Name: TCP RST] >>> [Coloring Rule String: tcp.flags.reset eq 1] >>> Ethernet II, Src: xxx, Dst: xxx >>> Destination: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Source: xxx >>> Address: xxx >>> .... ..0. .... .... .... .... = LG bit: Globally unique >>> address (factory default) >>> .... ...0 .... .... .... .... = IG bit: Individual address >>> (unicast) >>> Type: IPv4 (0x0800) >>> Trailer: 00003b22a540 >>> Internet Protocol Version 4, Src: x.y.w.z, Dst: x.y.w.z >>> 0100 .... = Version: 4 >>> .... 0101 = Header Length: 20 bytes (5) >>> Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) >>> 0000 00.. = Differentiated Services Codepoint: Default (0) >>> .... ..00 = Explicit Congestion Notification: Not >>> ECN-Capable Transport (0) >>> Total Length: 40 >>> Identification: 0xd52f (54575) >>> 010. .... = Flags: 0x2, Don't fragment >>> 0... .... = Reserved bit: Not set >>> .1.. .... = Don't fragment: Set >>> ..0. .... = More fragments: Not set >>> ...0 0000 0000 0000 = Fragment Offset: 0 >>> Time to Live: 52 >>> Protocol: TCP (6) >>> Header Checksum: 0x319d [validation disabled] >>> [Header checksum status: Unverified] >>> Source Address: x.y.w.z >>> Destination Address: x.y.w.z >>> Transmission Control Protocol, Src Port: xxx, Dst Port: 34986, Seq: >>> 5751, Len: 0 >>> Source Port: xxx >>> Destination Port: 34986 >>> [Stream index: 1] >>> [Conversation completeness: Complete, WITH_DATA (63)] >>> [TCP Segment Len: 0] >>> Sequence Number: 5751 (relative sequence number) >>> Sequence Number (raw): 2509794850 >>> [Next Sequence Number: 5751 (relative sequence number)] >>> Acknowledgment Number: 0 >>> Acknowledgment number (raw): 0 >>> 0101 .... = Header Length: 20 bytes (5) >>> Flags: 0x004 (RST) >>> 000. .... .... = Reserved: Not set >>> ...0 .... .... = Accurate ECN: Not set >>> .... 0... .... = Congestion Window Reduced: Not set >>> .... .0.. .... = ECN-Echo: Not set >>> .... ..0. .... = Urgent: Not set >>> .... ...0 .... = Acknowledgment: Not set >>> .... .... 0... = Push: Not set >>> .... .... .1.. = Reset: Set >>> .... .... ..0. = Syn: Not set >>> .... .... ...0 = Fin: Not set >>> [TCP Flags: ·········R··] >>> Window: 0 >>> [Calculated window size: 0] >>> [Window size scaling factor: 16384] >>> Checksum: 0xd1cb [unverified] >>> [Checksum Status: Unverified] >>> Urgent Pointer: 0 >>> [Timestamps] >>> [Time since first frame in this TCP stream: 22.119925000 >>> seconds] >>> [Time since previous frame in this TCP stream: 0.002535000 >>> seconds] >>> >>> I have other log collections working fine with TLS. >>> >>> Can you please give me some hint what could cause this? >>> >>> Thank you. >>> >>> Br, >>> Dragan >>> > ______________________________________________________________________________ Member info: https://lists.balabit.hu/mailman/listinfo/syslog-ng Documentation: http://www.balabit.com/support/documentation/?product=syslog-ng FAQ: http://www.balabit.com/wiki/syslog-ng-faq