Re: [syslog-ng] syslog-ng reset connection before data transfer

23 Feb 2023

      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@lists.balabit.hu> on behalf of 
Dragan Zecevic <dragan.zecevic@live.com>
*Sent:* Tuesday, February 14, 2023 2:33 PM
*To:* syslog-ng@lists.balabit.hu <syslog-ng@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
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Re: [syslog-ng] syslog-ng reset connection before data transfer

Steve Bernacki