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Blocks Parsec STUN with zero logging #1246

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dontcrash opened this issue Dec 27, 2024 · 5 comments
Open

Blocks Parsec STUN with zero logging #1246

dontcrash opened this issue Dec 27, 2024 · 5 comments

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@dontcrash
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dontcrash commented Dec 27, 2024 •
edited
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When attempting to use Parsec (parsecd) I am unable to connect to any hosts and get the following error message:
image

Checking the event log, all traffic has been allowed:
image

I have verified it is OpenSnitch causing this, if I pause OpenSnitch, Parsec works normally
image

I have tried modifying the inbound rule to allow connections:
image

I am already allowing est and rel in system rules:
image

  • OpenSnitch version 1.6.6
  • OS: ArchLinux
  • Version 6.12.6-arch1-1
  • Window Manager: KDE
  • Kernel version: Linux arch 6.12.6-arch1-1 #​1 SMP PREEMPT_DYNAMIC Thu, 19 Dec 2024 21:29:01 +0000 x86_64 GNU/Linux
@dontcrash
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dontcrash commented Dec 27, 2024 •
edited
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While trying to connect (unsuccessfully):

$ sudo lsof -i -P -n | grep parsecd
parsecd   293011 nick   4u  IPv4 1303460      0t0  UDP 127.0.0.1:5309 
parsecd   293011 nick   7u  IPv4 1410866      0t0  TCP 172.16.2.20:33352->104.18.1.181:443 (ESTABLISHED)
parsecd   293011 nick  11u  IPv6 1410876      0t0  UDP *:30437 
$ sudo tcpdump -nn host 104.18.0.181
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
16:58:03.175808 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [S], seq 1647410070, win 62720, options [mss 8960,sackOK,TS val 890501315 ecr 0,nop,wscale 7], length 0
16:58:03.178139 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [S.], seq 3419986938, ack 1647410071, win 65535, options [mss 1400,sackOK,TS val 3051760625 ecr 890501315,nop,wscale 13], length 0
16:58:03.178155 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [.], ack 1, win 490, options [nop,nop,TS val 890501325 ecr 3051760625], length 0
16:58:03.178450 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 1:518, ack 1, win 490, options [nop,nop,TS val 890501325 ecr 3051760625], length 517
16:58:03.181186 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], ack 518, win 9, options [nop,nop,TS val 3051760628 ecr 890501325], length 0
16:58:03.182896 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], seq 1:1449, ack 518, win 9, options [nop,nop,TS val 3051760629 ecr 890501325], length 1448
16:58:03.182904 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [.], ack 1449, win 582, options [nop,nop,TS val 890501330 ecr 3051760629], length 0
16:58:03.183036 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [P.], seq 1449:2853, ack 518, win 9, options [nop,nop,TS val 3051760629 ecr 890501325], length 1404
16:58:03.183042 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [.], ack 2853, win 660, options [nop,nop,TS val 890501330 ecr 3051760629], length 0
16:58:03.184212 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 518:598, ack 2853, win 660, options [nop,nop,TS val 890501331 ecr 3051760629], length 80
16:58:03.184286 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 598:916, ack 2853, win 660, options [nop,nop,TS val 890501331 ecr 3051760629], length 318
16:58:03.186354 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], ack 916, win 9, options [nop,nop,TS val 3051760633 ecr 890501331], length 0
16:58:03.186385 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [P.], seq 2853:3406, ack 916, win 9, options [nop,nop,TS val 3051760633 ecr 890501331], length 553
16:58:03.186458 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 916:947, ack 3406, win 674, options [nop,nop,TS val 890501333 ecr 3051760633], length 31
16:58:03.228752 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], ack 947, win 9, options [nop,nop,TS val 3051760676 ecr 890501333], length 0
16:58:03.531956 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [P.], seq 3406:3736, ack 947, win 9, options [nop,nop,TS val 3051760979 ecr 890501333], length 330
16:58:03.531988 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [P.], seq 3736:4072, ack 947, win 9, options [nop,nop,TS val 3051760979 ecr 890501333], length 336
16:58:03.532013 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [P.], seq 4072:4103, ack 947, win 9, options [nop,nop,TS val 3051760979 ecr 890501333], length 31
16:58:03.532050 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [.], ack 4103, win 674, options [nop,nop,TS val 890501679 ecr 3051760979], length 0
16:58:03.532081 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 947:995, ack 4103, win 674, options [nop,nop,TS val 890501679 ecr 3051760979], length 48
16:58:03.532097 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [P.], seq 995:1019, ack 4103, win 674, options [nop,nop,TS val 890501679 ecr 3051760979], length 24
16:58:03.532145 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [F.], seq 1019, ack 4103, win 674, options [nop,nop,TS val 890501679 ecr 3051760979], length 0
16:58:03.534243 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], ack 995, win 9, options [nop,nop,TS val 3051760981 ecr 890501679], length 0
16:58:03.534272 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [.], ack 1019, win 9, options [nop,nop,TS val 3051760981 ecr 890501679], length 0
16:58:03.534664 IP 104.18.0.181.443 > 172.16.2.20.39242: Flags [F.], seq 4103, ack 1020, win 9, options [nop,nop,TS val 3051760981 ecr 890501679], length 0
16:58:03.534670 IP 172.16.2.20.39242 > 104.18.0.181.443: Flags [.], ack 4104, win 674, options [nop,nop,TS val 890501682 ecr 3051760981], length 0
16:58:12.913362 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [S], seq 506025666, win 62720, options [mss 8960,sackOK,TS val 890511053 ecr 0,nop,wscale 7], length 0
16:58:12.915203 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [S.], seq 635943723, ack 506025667, win 65535, options [mss 1400,sackOK,TS val 769363270 ecr 890511053,nop,wscale 13], length 0
16:58:12.915219 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [.], ack 1, win 490, options [nop,nop,TS val 890511062 ecr 769363270], length 0
16:58:12.915467 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 1:518, ack 1, win 490, options [nop,nop,TS val 890511062 ecr 769363270], length 517
16:58:12.918141 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], ack 518, win 9, options [nop,nop,TS val 769363273 ecr 890511062], length 0
16:58:12.919841 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], seq 1:1449, ack 518, win 9, options [nop,nop,TS val 769363275 ecr 890511062], length 1448
16:58:12.919850 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [.], ack 1449, win 582, options [nop,nop,TS val 890511067 ecr 769363275], length 0
16:58:12.920028 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [P.], seq 1449:2853, ack 518, win 9, options [nop,nop,TS val 769363275 ecr 890511062], length 1404
16:58:12.920037 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [.], ack 2853, win 670, options [nop,nop,TS val 890511067 ecr 769363275], length 0
16:58:12.920832 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 518:598, ack 2853, win 670, options [nop,nop,TS val 890511068 ecr 769363275], length 80
16:58:12.920909 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 598:1336, ack 2853, win 670, options [nop,nop,TS val 890511068 ecr 769363275], length 738
16:58:12.923142 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], ack 1336, win 9, options [nop,nop,TS val 769363278 ecr 890511068], length 0
16:58:12.923260 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [P.], seq 2853:3406, ack 1336, win 9, options [nop,nop,TS val 769363279 ecr 890511068], length 553
16:58:12.923317 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 1336:1367, ack 3406, win 674, options [nop,nop,TS val 890511070 ecr 769363279], length 31
16:58:12.966197 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], ack 1367, win 9, options [nop,nop,TS val 769363322 ecr 890511070], length 0
16:58:13.241905 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [P.], seq 3406:3709, ack 1367, win 9, options [nop,nop,TS val 769363597 ecr 890511070], length 303
16:58:13.241973 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 1367:1415, ack 3709, win 674, options [nop,nop,TS val 890511389 ecr 769363597], length 48
16:58:13.241986 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [P.], seq 1415:1439, ack 3709, win 674, options [nop,nop,TS val 890511389 ecr 769363597], length 24
16:58:13.242032 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [F.], seq 1439, ack 3709, win 674, options [nop,nop,TS val 890511389 ecr 769363597], length 0
16:58:13.244140 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], ack 1415, win 9, options [nop,nop,TS val 769363599 ecr 890511389], length 0
16:58:13.244170 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [.], ack 1439, win 9, options [nop,nop,TS val 769363599 ecr 890511389], length 0
16:58:13.244613 IP 104.18.0.181.443 > 172.16.2.20.34926: Flags [F.], seq 3709, ack 1440, win 9, options [nop,nop,TS val 769363600 ecr 890511389], length 0
16:58:13.244621 IP 172.16.2.20.34926 > 104.18.0.181.443: Flags [.], ack 3710, win 674, options [nop,nop,TS val 890511392 ecr 769363600], length 0

 
 
While trying to connect (successfully):

$ sudo lsof -i -P -n | grep parsecd
parsecd   293011 nick   4u  IPv4 1303460      0t0  UDP 127.0.0.1:5309 
parsecd   293011 nick   6u  IPv4 1465354      0t0  TCP 172.16.2.20:42544->104.18.1.181:443 (ESTABLISHED)
parsecd   293011 nick  11u  IPv6 1465355      0t0  UDP *:30437
$ sudo tcpdump -nn host 104.18.1.181
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eno1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
17:00:46.070469 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [S], seq 1475933013, win 62720, options [mss 8960,sackOK,TS val 984049641 ecr 0,nop,wscale 7], length 0
17:00:46.072496 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [S.], seq 2095764059, ack 1475933014, win 65535, options [mss 1400,sackOK,TS val 1242443912 ecr 984049641,nop,wscale 13], length 0
17:00:46.072516 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 1, win 490, options [nop,nop,TS val 984049643 ecr 1242443912], length 0
17:00:46.072748 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [P.], seq 1:518, ack 1, win 490, options [nop,nop,TS val 984049644 ecr 1242443912], length 517
17:00:46.075498 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [.], ack 518, win 9, options [nop,nop,TS val 1242443915 ecr 984049644], length 0
17:00:46.078153 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [.], seq 1:1449, ack 518, win 9, options [nop,nop,TS val 1242443917 ecr 984049644], length 1448
17:00:46.078163 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 1449, win 582, options [nop,nop,TS val 984049649 ecr 1242443917], length 0
17:00:46.078194 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [P.], seq 1449:2842, ack 518, win 9, options [nop,nop,TS val 1242443917 ecr 984049644], length 1393
17:00:46.078199 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 2842, win 605, options [nop,nop,TS val 984049649 ecr 1242443917], length 0
17:00:46.079034 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [P.], seq 518:598, ack 2842, win 605, options [nop,nop,TS val 984049650 ecr 1242443917], length 80
17:00:46.079083 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [P.], seq 598:909, ack 2842, win 605, options [nop,nop,TS val 984049650 ecr 1242443917], length 311
17:00:46.080602 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [.], ack 909, win 9, options [nop,nop,TS val 1242443920 ecr 984049650], length 0
17:00:46.899031 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [P.], seq 2842:3852, ack 909, win 9, options [nop,nop,TS val 1242444738 ecr 984049650], length 1010
17:00:46.899215 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [P.], seq 909:1643, ack 3852, win 628, options [nop,nop,TS val 984050470 ecr 1242444738], length 734
17:00:46.942905 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [.], ack 1643, win 9, options [nop,nop,TS val 1242444783 ecr 984050470], length 0
17:00:47.695990 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [P.], seq 3852:4619, ack 1643, win 9, options [nop,nop,TS val 1242445536 ecr 984050470], length 767
17:00:47.737453 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 4619, win 650, options [nop,nop,TS val 984051308 ecr 1242445536], length 0
17:00:47.776342 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [P.], seq 1643:1986, ack 4619, win 650, options [nop,nop,TS val 984051347 ecr 1242445536], length 343
17:00:47.778444 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [.], ack 1986, win 9, options [nop,nop,TS val 1242445618 ecr 984051347], length 0
17:00:47.808037 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [P.], seq 4619:5002, ack 1986, win 9, options [nop,nop,TS val 1242445648 ecr 984051347], length 383
17:00:47.808046 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 5002, win 673, options [nop,nop,TS val 984051379 ecr 1242445648], length 0
17:00:48.022965 IP 104.18.1.181.443 > 172.16.2.20.38834: Flags [P.], seq 5002:5394, ack 1986, win 9, options [nop,nop,TS val 1242445863 ecr 984051379], length 392
17:00:48.022982 IP 172.16.2.20.38834 > 104.18.1.181.443: Flags [.], ack 5394, win 674, options [nop,nop,TS val 984051594 ecr 1242445863], length 0
17:00:56.193833 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [S], seq 2351270205, win 62720, options [mss 8960,sackOK,TS val 984059765 ecr 0,nop,wscale 7], length 0
17:00:56.195500 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [S.], seq 1387859587, ack 2351270206, win 65535, options [mss 1400,sackOK,TS val 1615876545 ecr 984059765,nop,wscale 13], length 0
17:00:56.195515 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [.], ack 1, win 490, options [nop,nop,TS val 984059767 ecr 1615876545], length 0
17:00:56.195805 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 1:518, ack 1, win 490, options [nop,nop,TS val 984059767 ecr 1615876545], length 517
17:00:56.198461 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 518, win 9, options [nop,nop,TS val 1615876548 ecr 984059767], length 0
17:00:56.200404 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], seq 1:1449, ack 518, win 9, options [nop,nop,TS val 1615876549 ecr 984059767], length 1448
17:00:56.200409 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [.], ack 1449, win 582, options [nop,nop,TS val 984059771 ecr 1615876549], length 0
17:00:56.200550 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [P.], seq 1449:2854, ack 518, win 9, options [nop,nop,TS val 1615876549 ecr 984059767], length 1405
17:00:56.200554 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [.], ack 2854, win 660, options [nop,nop,TS val 984059772 ecr 1615876549], length 0
17:00:56.201336 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 518:598, ack 2854, win 660, options [nop,nop,TS val 984059772 ecr 1615876549], length 80
17:00:56.201416 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 598:959, ack 2854, win 660, options [nop,nop,TS val 984059772 ecr 1615876549], length 361
17:00:56.203495 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 959, win 9, options [nop,nop,TS val 1615876553 ecr 984059772], length 0
17:00:56.203538 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [P.], seq 2854:3407, ack 959, win 9, options [nop,nop,TS val 1615876553 ecr 984059772], length 553
17:00:56.203602 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 959:990, ack 3407, win 674, options [nop,nop,TS val 984059775 ecr 1615876553], length 31
17:00:56.246198 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 990, win 9, options [nop,nop,TS val 1615876596 ecr 984059775], length 0
17:00:56.339562 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [S], seq 3243159426, win 62720, options [mss 8960,sackOK,TS val 984059911 ecr 0,nop,wscale 7], length 0
17:00:56.341517 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [S.], seq 1056515563, ack 3243159427, win 65535, options [mss 1400,sackOK,TS val 2438372003 ecr 984059911,nop,wscale 13], length 0
17:00:56.341526 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [.], ack 1, win 490, options [nop,nop,TS val 984059913 ecr 2438372003], length 0
17:00:56.341802 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 1:518, ack 1, win 490, options [nop,nop,TS val 984059913 ecr 2438372003], length 517
17:00:56.344504 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], ack 518, win 9, options [nop,nop,TS val 2438372006 ecr 984059913], length 0
17:00:56.346115 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], seq 1:1449, ack 518, win 9, options [nop,nop,TS val 2438372008 ecr 984059913], length 1448
17:00:56.346120 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [.], ack 1449, win 582, options [nop,nop,TS val 984059917 ecr 2438372008], length 0
17:00:56.346253 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [P.], seq 1449:2853, ack 518, win 9, options [nop,nop,TS val 2438372008 ecr 984059913], length 1404
17:00:56.346256 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [.], ack 2853, win 660, options [nop,nop,TS val 984059917 ecr 2438372008], length 0
17:00:56.347304 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 518:598, ack 2853, win 660, options [nop,nop,TS val 984059918 ecr 2438372008], length 80
17:00:56.347388 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 598:1331, ack 2853, win 660, options [nop,nop,TS val 984059918 ecr 2438372008], length 733
17:00:56.349468 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], ack 1331, win 9, options [nop,nop,TS val 2438372011 ecr 984059918], length 0
17:00:56.349548 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [P.], seq 2853:3406, ack 1331, win 9, options [nop,nop,TS val 2438372011 ecr 984059918], length 553
17:00:56.349609 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 1331:1362, ack 3406, win 674, options [nop,nop,TS val 984059921 ecr 2438372011], length 31
17:00:56.391829 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], ack 1362, win 9, options [nop,nop,TS val 2438372054 ecr 984059921], length 0
17:00:56.469974 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [P.], seq 3407:3709, ack 990, win 9, options [nop,nop,TS val 1615876819 ecr 984059775], length 302
17:00:56.470072 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 990:1038, ack 3709, win 674, options [nop,nop,TS val 984060041 ecr 1615876819], length 48
17:00:56.470094 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [P.], seq 1038:1062, ack 3709, win 674, options [nop,nop,TS val 984060041 ecr 1615876819], length 24
17:00:56.470143 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [F.], seq 1062, ack 3709, win 674, options [nop,nop,TS val 984060041 ecr 1615876819], length 0
17:00:56.471478 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 1038, win 9, options [nop,nop,TS val 1615876821 ecr 984060041], length 0
17:00:56.471507 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 1062, win 9, options [nop,nop,TS val 1615876821 ecr 984060041], length 0
17:00:56.472223 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [F.], seq 3709, ack 1062, win 9, options [nop,nop,TS val 1615876822 ecr 984060041], length 0
17:00:56.472230 IP 172.16.2.20.38968 > 104.18.1.181.443: Flags [.], ack 3710, win 674, options [nop,nop,TS val 984060043 ecr 1615876822], length 0
17:00:56.472419 IP 104.18.1.181.443 > 172.16.2.20.38968: Flags [.], ack 1063, win 9, options [nop,nop,TS val 1615876822 ecr 984060041], length 0
17:00:56.668363 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [P.], seq 3406:3708, ack 1362, win 9, options [nop,nop,TS val 2438372330 ecr 984059921], length 302
17:00:56.668454 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 1362:1410, ack 3708, win 674, options [nop,nop,TS val 984060239 ecr 2438372330], length 48
17:00:56.668472 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [P.], seq 1410:1434, ack 3708, win 674, options [nop,nop,TS val 984060239 ecr 2438372330], length 24
17:00:56.668524 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [F.], seq 1434, ack 3708, win 674, options [nop,nop,TS val 984060240 ecr 2438372330], length 0
17:00:56.670467 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], ack 1410, win 9, options [nop,nop,TS val 2438372332 ecr 984060239], length 0
17:00:56.670495 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [.], ack 1434, win 9, options [nop,nop,TS val 2438372332 ecr 984060239], length 0
17:00:56.670761 IP 104.18.1.181.443 > 172.16.2.20.38972: Flags [F.], seq 3708, ack 1435, win 9, options [nop,nop,TS val 2438372332 ecr 984060240], length 0
17:00:56.670766 IP 172.16.2.20.38972 > 104.18.1.181.443: Flags [.], ack 3709, win 674, options [nop,nop,TS val 984060242 ecr 2438372332], length 0

 
 
Note
Ignore the fact it is a different IP on the successful attempt, it flaps between 104.18.1.181 and 104.18.0.181 on multiple attempts both successful and unsuccessful.

@gustavo-iniguez-goya
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Hi @dontcrash ,

Could you enable [x] Debug invalid connections on the Preferences dialog -> Nodes tab, and see if it prompts you to allow an outbound connection?

@dontcrash
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Hi @dontcrash ,

Could you enable [x] Debug invalid connections on the Preferences dialog -> Nodes tab, and see if it prompts you to allow an outbound connection?

Hey, thank you for the quick response, unfortunately that did not reveal anything further :(

image

@gustavo-iniguez-goya
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ok @dontcrash . If I'm not wrong, I need a mac or win computer to act as a "Host" , correct? Is it possible to use Parsec for a linux2linux connection (or linux2android)?

I only have linux/android machines right now, so until the next week I won't be able to properly try to reproduce this issue.

@dontcrash
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dontcrash commented Dec 30, 2024 •
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ok @dontcrash . If I'm not wrong, I need a mac or win computer to act as a "Host" , correct? Is it possible to use Parsec for a linux2linux connection (or linux2android)?

I only have linux/android machines right now, so until the next week I won't be able to properly try to reproduce this issue.

Hosting does not work on Linux sadly! I have found another scenario that reproduces the same issue, if I mount an SMB share in Dolphin using Network > Add Network Folder, if I mount that before OpenSnitch is running it works, if I close Dolphin, start OpenSnitch, Dolphin then will not open and hangs until I pause OpenSnitch, interestingly, mounting via fstab works perfectly, mount -a brings up a dialog to allow traffic.
I am wondering if there is some weird sauce happening with iptables chains.

I have tried disabling UFW, issue persists.

Chain INPUT (policy DROP)
target     prot opt source               destination         
ufw-before-logging-input  all  --  anywhere             anywhere            
ufw-before-input  all  --  anywhere             anywhere            
ufw-after-input  all  --  anywhere             anywhere            
ufw-after-logging-input  all  --  anywhere             anywhere            
ufw-reject-input  all  --  anywhere             anywhere            
ufw-track-input  all  --  anywhere             anywhere            

Chain FORWARD (policy DROP)
target     prot opt source               destination         
ufw-before-logging-forward  all  --  anywhere             anywhere            
ufw-before-forward  all  --  anywhere             anywhere            
ufw-after-forward  all  --  anywhere             anywhere            
ufw-after-logging-forward  all  --  anywhere             anywhere            
ufw-reject-forward  all  --  anywhere             anywhere            
ufw-track-forward  all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ufw-before-logging-output  all  --  anywhere             anywhere            
ufw-before-output  all  --  anywhere             anywhere            
ufw-after-output  all  --  anywhere             anywhere            
ufw-after-logging-output  all  --  anywhere             anywhere            
ufw-reject-output  all  --  anywhere             anywhere            
ufw-track-output  all  --  anywhere             anywhere            

Chain ufw-after-forward (1 references)
target     prot opt source               destination         

Chain ufw-after-input (1 references)
target     prot opt source               destination         
ufw-skip-to-policy-input  udp  --  anywhere             anywhere             udp dpt:netbios-ns
ufw-skip-to-policy-input  udp  --  anywhere             anywhere             udp dpt:netbios-dgm
ufw-skip-to-policy-input  tcp  --  anywhere             anywhere             tcp dpt:netbios-ssn
ufw-skip-to-policy-input  tcp  --  anywhere             anywhere             tcp dpt:microsoft-ds
ufw-skip-to-policy-input  udp  --  anywhere             anywhere             udp dpt:bootps
ufw-skip-to-policy-input  udp  --  anywhere             anywhere             udp dpt:bootpc
ufw-skip-to-policy-input  all  --  anywhere             anywhere             ADDRTYPE match dst-type BROADCAST

Chain ufw-after-logging-forward (1 references)
target     prot opt source               destination         
LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 10 LOG level warn prefix "[UFW BLOCK] "

Chain ufw-after-logging-input (1 references)
target     prot opt source               destination         
LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 10 LOG level warn prefix "[UFW BLOCK] "

Chain ufw-after-logging-output (1 references)
target     prot opt source               destination         

Chain ufw-after-output (1 references)
target     prot opt source               destination         

Chain ufw-before-forward (1 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere             icmp destination-unreachable
ACCEPT     icmp --  anywhere             anywhere             icmp time-exceeded
ACCEPT     icmp --  anywhere             anywhere             icmp parameter-problem
ACCEPT     icmp --  anywhere             anywhere             icmp echo-request
ufw-user-forward  all  --  anywhere             anywhere            

Chain ufw-before-input (1 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
ufw-logging-deny  all  --  anywhere             anywhere             ctstate INVALID
DROP       all  --  anywhere             anywhere             ctstate INVALID
ACCEPT     icmp --  anywhere             anywhere             icmp destination-unreachable
ACCEPT     icmp --  anywhere             anywhere             icmp time-exceeded
ACCEPT     icmp --  anywhere             anywhere             icmp parameter-problem
ACCEPT     icmp --  anywhere             anywhere             icmp echo-request
ACCEPT     udp  --  anywhere             anywhere             udp spt:bootps dpt:bootpc
ufw-not-local  all  --  anywhere             anywhere            
ACCEPT     udp  --  anywhere             mdns.mcast.net       udp dpt:mdns
ACCEPT     udp  --  anywhere             239.255.255.250      udp dpt:ssdp
ufw-user-input  all  --  anywhere             anywhere            

Chain ufw-before-logging-forward (1 references)
target     prot opt source               destination         

Chain ufw-before-logging-input (1 references)
target     prot opt source               destination         

Chain ufw-before-logging-output (1 references)
target     prot opt source               destination         

Chain ufw-before-output (1 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
ufw-user-output  all  --  anywhere             anywhere            

Chain ufw-logging-allow (0 references)
target     prot opt source               destination         
LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 10 LOG level warn prefix "[UFW ALLOW] "

Chain ufw-logging-deny (2 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere             ctstate INVALID limit: avg 3/min burst 10
LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 10 LOG level warn prefix "[UFW BLOCK] "

Chain ufw-not-local (1 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere             ADDRTYPE match dst-type LOCAL
RETURN     all  --  anywhere             anywhere             ADDRTYPE match dst-type MULTICAST
RETURN     all  --  anywhere             anywhere             ADDRTYPE match dst-type BROADCAST
ufw-logging-deny  all  --  anywhere             anywhere             limit: avg 3/min burst 10
DROP       all  --  anywhere             anywhere            

Chain ufw-reject-forward (1 references)
target     prot opt source               destination         

Chain ufw-reject-input (1 references)
target     prot opt source               destination         

Chain ufw-reject-output (1 references)
target     prot opt source               destination         

Chain ufw-skip-to-policy-forward (0 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere            

Chain ufw-skip-to-policy-input (7 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere            

Chain ufw-skip-to-policy-output (0 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            

Chain ufw-track-forward (1 references)
target     prot opt source               destination         

Chain ufw-track-input (1 references)
target     prot opt source               destination         

Chain ufw-track-output (1 references)
target     prot opt source               destination         
ACCEPT     tcp  --  anywhere             anywhere             ctstate NEW
ACCEPT     udp  --  anywhere             anywhere             ctstate NEW

Chain ufw-user-forward (1 references)
target     prot opt source               destination         

Chain ufw-user-input (1 references)
target     prot opt source               destination         

Chain ufw-user-limit (0 references)
target     prot opt source               destination         
LOG        all  --  anywhere             anywhere             limit: avg 3/min burst 5 LOG level warn prefix "[UFW LIMIT BLOCK] "
REJECT     all  --  anywhere             anywhere             reject-with icmp-port-unreachable

Chain ufw-user-limit-accept (0 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            

Chain ufw-user-logging-forward (0 references)
target     prot opt source               destination         

Chain ufw-user-logging-input (0 references)
target     prot opt source               destination         

Chain ufw-user-logging-output (0 references)
target     prot opt source               destination         

Chain ufw-user-output (1 references)
target     prot opt source               destination

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@gustavo-iniguez-goya @dontcrash