[syslog-ng] syslog-ng reset connection before data transfer
Balazs Scheidler
bazsi77 at gmail.com
Thu Mar 2 21:07:37 UTC 2023
Yup, it should work. More or less all combinations are possible with the
driver, transport option and the syslog-protocol flag.
On Thu, Mar 2, 2023, 20:12 Evan Rempel <erempel at uvic.ca> wrote:
> 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 <syslog-ng-bounces at lists.balabit.hu>
> <syslog-ng-bounces at lists.balabit.hu> on behalf of Evan Rempel
> <erempel at uvic.ca> <erempel at uvic.ca>
> *Sent:* Thursday, February 23, 2023 2:17 PM
> *To:* syslog-ng at lists.balabit.hu <syslog-ng at lists.balabit.hu>
> <syslog-ng at lists.balabit.hu>
> *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 <syslog-ng-bounces at lists.balabit.hu>
> <syslog-ng-bounces at lists.balabit.hu> on behalf of Dragan Zecevic
> <dragan.zecevic at live.com> <dragan.zecevic at live.com>
> *Sent:* Tuesday, February 14, 2023 2:33 PM
> *To:* syslog-ng at lists.balabit.hu <syslog-ng at lists.balabit.hu>
> <syslog-ng at lists.balabit.hu>
> *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
>
>
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