Windows 10 network discovery doesn't detect Ubuntu servers

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Win 10 Network Discovery isn't picking up my Ubuntu servers anymore. It was working up until a few months ago. All my Win10 systems see eachother. My Ubuntu servers can see eachother. But there is no Ubuntu<->Win10 going on.



The truly maddening thing is that I can see the NBT session request/responses on the server side.



I can still access the shares manually, they just don't show up in "Network".



testparm



# testparm -s
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
WARNING: The "syslog" option is deprecated
Processing section "[printers]"
Processing section "[print$]"
Loaded services file OK.
Server role: ROLE_STANDALONE

# Global parameters
[global]
 server string = %h server (Samba, Ubuntu)
 server role = standalone server
 map to guest = Bad User
 obey pam restrictions = Yes
 pam password change = Yes
 passwd program = /usr/bin/passwd %u
 passwd chat = *Entersnews*spassword:* %nn *Retypesnews*spassword:* %nn *passwordsupdatedssuccessfully* .
 unix password sync = Yes
 syslog = 0
 log file = /var/log/samba/log.%m
 max log size = 1000
 dns proxy = No
 usershare allow guests = Yes
 panic action = /usr/share/samba/panic-action %d
 idmap config * : backend = tdb


[printers]
 comment = All Printers
 path = /var/spool/samba
 create mask = 0700
 printable = Yes
 browseable = No


[print$]
 comment = Printer Drivers
 path = /var/lib/samba/printers


usershare



# net usershare info myfolder
[myfolder]
path=/myfolder
comment=
usershare_acl=Everyone:F,
guest_ok=y


TCPdump



192.168.1.215 = Windows 10



192.168.1.4 = Ubuntu 16.04



tcpdump -v -n 'port 137 || 138 || 139 || 445 || 5353' 
14:44:52.366620 IP (tos 0x0, ttl 128, id 29684, offset 0, flags [DF], proto TCP (6), length 52)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [S], cksum 0xdf73 (correct), seq 1146332280, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
 14:44:52.366661 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 52)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [S.], cksum 0x50b2 (correct), seq 3495053119, ack 1146332281, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
 14:44:52.368519 IP (tos 0x0, ttl 128, id 29685, offset 0, flags [DF], proto TCP (6), length 112)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0x8b68 (correct), seq 1:73, ack 1, win 256, length 72 NBT Session Packet: Session Request
 14:44:52.368564 IP (tos 0x0, ttl 64, id 41745, offset 0, flags [DF], proto TCP (6), length 40)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [.], cksum 0x0268 (correct), ack 73, win 229, length 0
 14:44:52.370587 IP (tos 0x0, ttl 64, id 41746, offset 0, flags [DF], proto TCP (6), length 44)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x805b (correct), seq 1:5, ack 73, win 229, length 4 NBT Session Packet: Session Granted
 14:44:52.371766 IP (tos 0x0, ttl 128, id 29688, offset 0, flags [DF], proto TCP (6), length 113)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xcae3 (correct), seq 73:146, ack 5, win 256, length 73 NBT Session Packet: Session Message
 14:44:52.375416 IP (tos 0x0, ttl 64, id 41747, offset 0, flags [DF], proto TCP (6), length 246)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0xf320 (correct), seq 5:211, ack 146, win 229, length 206 NBT Session Packet: Session Message
 14:44:52.376385 IP (tos 0x0, ttl 128, id 29690, offset 0, flags [DF], proto TCP (6), length 218)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xf64e (correct), seq 146:324, ack 211, win 255, length 178 NBT Session Packet: Session Message
 14:44:52.376601 IP (tos 0x0, ttl 64, id 41748, offset 0, flags [DF], proto TCP (6), length 312)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x6e56 (correct), seq 211:483, ack 324, win 237, length 272 NBT Session Packet: Session Message
 14:44:52.377579 IP (tos 0x0, ttl 128, id 29691, offset 0, flags [DF], proto TCP (6), length 40)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [F.], cksum 0xff70 (correct), seq 324, ack 483, win 254, length 0
 14:44:52.380775 IP (tos 0x0, ttl 64, id 41749, offset 0, flags [DF], proto TCP (6), length 40)
 192.168.1.4.139 > 192.168.1.215.10025: Flags [F.], cksum 0xff80 (correct), seq 483, ack 325, win 237, length 0
 14:44:52.381585 IP (tos 0x0, ttl 128, id 29694, offset 0, flags [DF], proto TCP (6), length 40)
 192.168.1.215.10025 > 192.168.1.4.139: Flags [.], cksum 0xff6f (correct), ack 484, win 254, length 0
 14:44:54.359518 IP (tos 0x0, ttl 128, id 17492, offset 0, flags [none], proto UDP (17), length 202)
 192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
 14:44:54.359541 IP (tos 0x0, ttl 128, id 17493, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
 14:44:54.359640 IP (tos 0x0, ttl 64, id 23821, offset 0, flags [DF], proto UDP (17), length 210)
 192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
 14:44:55.068278 IP (tos 0x0, ttl 128, id 17495, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
 14:44:55.759031 IP (tos 0x0, ttl 128, id 17497, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
 14:44:57.135012 IP (tos 0x0, ttl 128, id 17504, offset 0, flags [none], proto UDP (17), length 202)
 192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
 14:44:57.135046 IP (tos 0x0, ttl 128, id 17505, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
 14:44:57.135157 IP (tos 0x0, ttl 64, id 24435, offset 0, flags [DF], proto UDP (17), length 210)
 192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
 14:44:57.885119 IP (tos 0x0, ttl 128, id 17507, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
 14:44:58.638794 IP (tos 0x0, ttl 128, id 17509, offset 0, flags [none], proto UDP (17), length 78)
 192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST





networking server samba







share|improve this question

























    up vote
    0
    down vote

    favorite












    Win 10 Network Discovery isn't picking up my Ubuntu servers anymore. It was working up until a few months ago. All my Win10 systems see eachother. My Ubuntu servers can see eachother. But there is no Ubuntu<->Win10 going on.



    The truly maddening thing is that I can see the NBT session request/responses on the server side.



    I can still access the shares manually, they just don't show up in "Network".



    testparm



    # testparm -s
    Load smb config files from /etc/samba/smb.conf
    rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
    WARNING: The "syslog" option is deprecated
    Processing section "[printers]"
    Processing section "[print$]"
    Loaded services file OK.
    Server role: ROLE_STANDALONE

    # Global parameters
    [global]
     server string = %h server (Samba, Ubuntu)
     server role = standalone server
     map to guest = Bad User
     obey pam restrictions = Yes
     pam password change = Yes
     passwd program = /usr/bin/passwd %u
     passwd chat = *Entersnews*spassword:* %nn *Retypesnews*spassword:* %nn *passwordsupdatedssuccessfully* .
     unix password sync = Yes
     syslog = 0
     log file = /var/log/samba/log.%m
     max log size = 1000
     dns proxy = No
     usershare allow guests = Yes
     panic action = /usr/share/samba/panic-action %d
     idmap config * : backend = tdb


    [printers]
     comment = All Printers
     path = /var/spool/samba
     create mask = 0700
     printable = Yes
     browseable = No


    [print$]
     comment = Printer Drivers
     path = /var/lib/samba/printers


    usershare



    # net usershare info myfolder
    [myfolder]
    path=/myfolder
    comment=
    usershare_acl=Everyone:F,
    guest_ok=y


    TCPdump



    192.168.1.215 = Windows 10



    192.168.1.4 = Ubuntu 16.04



    tcpdump -v -n 'port 137 || 138 || 139 || 445 || 5353' 
    14:44:52.366620 IP (tos 0x0, ttl 128, id 29684, offset 0, flags [DF], proto TCP (6), length 52)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [S], cksum 0xdf73 (correct), seq 1146332280, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
     14:44:52.366661 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 52)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [S.], cksum 0x50b2 (correct), seq 3495053119, ack 1146332281, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
     14:44:52.368519 IP (tos 0x0, ttl 128, id 29685, offset 0, flags [DF], proto TCP (6), length 112)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0x8b68 (correct), seq 1:73, ack 1, win 256, length 72 NBT Session Packet: Session Request
     14:44:52.368564 IP (tos 0x0, ttl 64, id 41745, offset 0, flags [DF], proto TCP (6), length 40)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [.], cksum 0x0268 (correct), ack 73, win 229, length 0
     14:44:52.370587 IP (tos 0x0, ttl 64, id 41746, offset 0, flags [DF], proto TCP (6), length 44)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x805b (correct), seq 1:5, ack 73, win 229, length 4 NBT Session Packet: Session Granted
     14:44:52.371766 IP (tos 0x0, ttl 128, id 29688, offset 0, flags [DF], proto TCP (6), length 113)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xcae3 (correct), seq 73:146, ack 5, win 256, length 73 NBT Session Packet: Session Message
     14:44:52.375416 IP (tos 0x0, ttl 64, id 41747, offset 0, flags [DF], proto TCP (6), length 246)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0xf320 (correct), seq 5:211, ack 146, win 229, length 206 NBT Session Packet: Session Message
     14:44:52.376385 IP (tos 0x0, ttl 128, id 29690, offset 0, flags [DF], proto TCP (6), length 218)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xf64e (correct), seq 146:324, ack 211, win 255, length 178 NBT Session Packet: Session Message
     14:44:52.376601 IP (tos 0x0, ttl 64, id 41748, offset 0, flags [DF], proto TCP (6), length 312)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x6e56 (correct), seq 211:483, ack 324, win 237, length 272 NBT Session Packet: Session Message
     14:44:52.377579 IP (tos 0x0, ttl 128, id 29691, offset 0, flags [DF], proto TCP (6), length 40)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [F.], cksum 0xff70 (correct), seq 324, ack 483, win 254, length 0
     14:44:52.380775 IP (tos 0x0, ttl 64, id 41749, offset 0, flags [DF], proto TCP (6), length 40)
     192.168.1.4.139 > 192.168.1.215.10025: Flags [F.], cksum 0xff80 (correct), seq 483, ack 325, win 237, length 0
     14:44:52.381585 IP (tos 0x0, ttl 128, id 29694, offset 0, flags [DF], proto TCP (6), length 40)
     192.168.1.215.10025 > 192.168.1.4.139: Flags [.], cksum 0xff6f (correct), ack 484, win 254, length 0
     14:44:54.359518 IP (tos 0x0, ttl 128, id 17492, offset 0, flags [none], proto UDP (17), length 202)
     192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
     14:44:54.359541 IP (tos 0x0, ttl 128, id 17493, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
     14:44:54.359640 IP (tos 0x0, ttl 64, id 23821, offset 0, flags [DF], proto UDP (17), length 210)
     192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
     14:44:55.068278 IP (tos 0x0, ttl 128, id 17495, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
     14:44:55.759031 IP (tos 0x0, ttl 128, id 17497, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
     14:44:57.135012 IP (tos 0x0, ttl 128, id 17504, offset 0, flags [none], proto UDP (17), length 202)
     192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
     14:44:57.135046 IP (tos 0x0, ttl 128, id 17505, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
     14:44:57.135157 IP (tos 0x0, ttl 64, id 24435, offset 0, flags [DF], proto UDP (17), length 210)
     192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
     14:44:57.885119 IP (tos 0x0, ttl 128, id 17507, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
     14:44:58.638794 IP (tos 0x0, ttl 128, id 17509, offset 0, flags [none], proto UDP (17), length 78)
     192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST





    networking server samba







    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Win 10 Network Discovery isn't picking up my Ubuntu servers anymore. It was working up until a few months ago. All my Win10 systems see eachother. My Ubuntu servers can see eachother. But there is no Ubuntu<->Win10 going on.



      The truly maddening thing is that I can see the NBT session request/responses on the server side.



      I can still access the shares manually, they just don't show up in "Network".



      testparm



      # testparm -s
      Load smb config files from /etc/samba/smb.conf
      rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
      WARNING: The "syslog" option is deprecated
      Processing section "[printers]"
      Processing section "[print$]"
      Loaded services file OK.
      Server role: ROLE_STANDALONE

      # Global parameters
      [global]
       server string = %h server (Samba, Ubuntu)
       server role = standalone server
       map to guest = Bad User
       obey pam restrictions = Yes
       pam password change = Yes
       passwd program = /usr/bin/passwd %u
       passwd chat = *Entersnews*spassword:* %nn *Retypesnews*spassword:* %nn *passwordsupdatedssuccessfully* .
       unix password sync = Yes
       syslog = 0
       log file = /var/log/samba/log.%m
       max log size = 1000
       dns proxy = No
       usershare allow guests = Yes
       panic action = /usr/share/samba/panic-action %d
       idmap config * : backend = tdb


      [printers]
       comment = All Printers
       path = /var/spool/samba
       create mask = 0700
       printable = Yes
       browseable = No


      [print$]
       comment = Printer Drivers
       path = /var/lib/samba/printers


      usershare



      # net usershare info myfolder
      [myfolder]
      path=/myfolder
      comment=
      usershare_acl=Everyone:F,
      guest_ok=y


      TCPdump



      192.168.1.215 = Windows 10



      192.168.1.4 = Ubuntu 16.04



      tcpdump -v -n 'port 137 || 138 || 139 || 445 || 5353' 
      14:44:52.366620 IP (tos 0x0, ttl 128, id 29684, offset 0, flags [DF], proto TCP (6), length 52)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [S], cksum 0xdf73 (correct), seq 1146332280, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
       14:44:52.366661 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 52)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [S.], cksum 0x50b2 (correct), seq 3495053119, ack 1146332281, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
       14:44:52.368519 IP (tos 0x0, ttl 128, id 29685, offset 0, flags [DF], proto TCP (6), length 112)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0x8b68 (correct), seq 1:73, ack 1, win 256, length 72 NBT Session Packet: Session Request
       14:44:52.368564 IP (tos 0x0, ttl 64, id 41745, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [.], cksum 0x0268 (correct), ack 73, win 229, length 0
       14:44:52.370587 IP (tos 0x0, ttl 64, id 41746, offset 0, flags [DF], proto TCP (6), length 44)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x805b (correct), seq 1:5, ack 73, win 229, length 4 NBT Session Packet: Session Granted
       14:44:52.371766 IP (tos 0x0, ttl 128, id 29688, offset 0, flags [DF], proto TCP (6), length 113)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xcae3 (correct), seq 73:146, ack 5, win 256, length 73 NBT Session Packet: Session Message
       14:44:52.375416 IP (tos 0x0, ttl 64, id 41747, offset 0, flags [DF], proto TCP (6), length 246)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0xf320 (correct), seq 5:211, ack 146, win 229, length 206 NBT Session Packet: Session Message
       14:44:52.376385 IP (tos 0x0, ttl 128, id 29690, offset 0, flags [DF], proto TCP (6), length 218)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xf64e (correct), seq 146:324, ack 211, win 255, length 178 NBT Session Packet: Session Message
       14:44:52.376601 IP (tos 0x0, ttl 64, id 41748, offset 0, flags [DF], proto TCP (6), length 312)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x6e56 (correct), seq 211:483, ack 324, win 237, length 272 NBT Session Packet: Session Message
       14:44:52.377579 IP (tos 0x0, ttl 128, id 29691, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [F.], cksum 0xff70 (correct), seq 324, ack 483, win 254, length 0
       14:44:52.380775 IP (tos 0x0, ttl 64, id 41749, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [F.], cksum 0xff80 (correct), seq 483, ack 325, win 237, length 0
       14:44:52.381585 IP (tos 0x0, ttl 128, id 29694, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [.], cksum 0xff6f (correct), ack 484, win 254, length 0
       14:44:54.359518 IP (tos 0x0, ttl 128, id 17492, offset 0, flags [none], proto UDP (17), length 202)
       192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
       14:44:54.359541 IP (tos 0x0, ttl 128, id 17493, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:54.359640 IP (tos 0x0, ttl 64, id 23821, offset 0, flags [DF], proto UDP (17), length 210)
       192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
       14:44:55.068278 IP (tos 0x0, ttl 128, id 17495, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:55.759031 IP (tos 0x0, ttl 128, id 17497, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:57.135012 IP (tos 0x0, ttl 128, id 17504, offset 0, flags [none], proto UDP (17), length 202)
       192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
       14:44:57.135046 IP (tos 0x0, ttl 128, id 17505, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:57.135157 IP (tos 0x0, ttl 64, id 24435, offset 0, flags [DF], proto UDP (17), length 210)
       192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
       14:44:57.885119 IP (tos 0x0, ttl 128, id 17507, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:58.638794 IP (tos 0x0, ttl 128, id 17509, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST





      networking server samba







      share|improve this question













      Win 10 Network Discovery isn't picking up my Ubuntu servers anymore. It was working up until a few months ago. All my Win10 systems see eachother. My Ubuntu servers can see eachother. But there is no Ubuntu<->Win10 going on.



      The truly maddening thing is that I can see the NBT session request/responses on the server side.



      I can still access the shares manually, they just don't show up in "Network".



      testparm



      # testparm -s
      Load smb config files from /etc/samba/smb.conf
      rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
      WARNING: The "syslog" option is deprecated
      Processing section "[printers]"
      Processing section "[print$]"
      Loaded services file OK.
      Server role: ROLE_STANDALONE

      # Global parameters
      [global]
       server string = %h server (Samba, Ubuntu)
       server role = standalone server
       map to guest = Bad User
       obey pam restrictions = Yes
       pam password change = Yes
       passwd program = /usr/bin/passwd %u
       passwd chat = *Entersnews*spassword:* %nn *Retypesnews*spassword:* %nn *passwordsupdatedssuccessfully* .
       unix password sync = Yes
       syslog = 0
       log file = /var/log/samba/log.%m
       max log size = 1000
       dns proxy = No
       usershare allow guests = Yes
       panic action = /usr/share/samba/panic-action %d
       idmap config * : backend = tdb


      [printers]
       comment = All Printers
       path = /var/spool/samba
       create mask = 0700
       printable = Yes
       browseable = No


      [print$]
       comment = Printer Drivers
       path = /var/lib/samba/printers


      usershare



      # net usershare info myfolder
      [myfolder]
      path=/myfolder
      comment=
      usershare_acl=Everyone:F,
      guest_ok=y


      TCPdump



      192.168.1.215 = Windows 10



      192.168.1.4 = Ubuntu 16.04



      tcpdump -v -n 'port 137 || 138 || 139 || 445 || 5353' 
      14:44:52.366620 IP (tos 0x0, ttl 128, id 29684, offset 0, flags [DF], proto TCP (6), length 52)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [S], cksum 0xdf73 (correct), seq 1146332280, win 64240, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0
       14:44:52.366661 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 52)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [S.], cksum 0x50b2 (correct), seq 3495053119, ack 1146332281, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 7], length 0
       14:44:52.368519 IP (tos 0x0, ttl 128, id 29685, offset 0, flags [DF], proto TCP (6), length 112)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0x8b68 (correct), seq 1:73, ack 1, win 256, length 72 NBT Session Packet: Session Request
       14:44:52.368564 IP (tos 0x0, ttl 64, id 41745, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [.], cksum 0x0268 (correct), ack 73, win 229, length 0
       14:44:52.370587 IP (tos 0x0, ttl 64, id 41746, offset 0, flags [DF], proto TCP (6), length 44)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x805b (correct), seq 1:5, ack 73, win 229, length 4 NBT Session Packet: Session Granted
       14:44:52.371766 IP (tos 0x0, ttl 128, id 29688, offset 0, flags [DF], proto TCP (6), length 113)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xcae3 (correct), seq 73:146, ack 5, win 256, length 73 NBT Session Packet: Session Message
       14:44:52.375416 IP (tos 0x0, ttl 64, id 41747, offset 0, flags [DF], proto TCP (6), length 246)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0xf320 (correct), seq 5:211, ack 146, win 229, length 206 NBT Session Packet: Session Message
       14:44:52.376385 IP (tos 0x0, ttl 128, id 29690, offset 0, flags [DF], proto TCP (6), length 218)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [P.], cksum 0xf64e (correct), seq 146:324, ack 211, win 255, length 178 NBT Session Packet: Session Message
       14:44:52.376601 IP (tos 0x0, ttl 64, id 41748, offset 0, flags [DF], proto TCP (6), length 312)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [P.], cksum 0x6e56 (correct), seq 211:483, ack 324, win 237, length 272 NBT Session Packet: Session Message
       14:44:52.377579 IP (tos 0x0, ttl 128, id 29691, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [F.], cksum 0xff70 (correct), seq 324, ack 483, win 254, length 0
       14:44:52.380775 IP (tos 0x0, ttl 64, id 41749, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.4.139 > 192.168.1.215.10025: Flags [F.], cksum 0xff80 (correct), seq 483, ack 325, win 237, length 0
       14:44:52.381585 IP (tos 0x0, ttl 128, id 29694, offset 0, flags [DF], proto TCP (6), length 40)
       192.168.1.215.10025 > 192.168.1.4.139: Flags [.], cksum 0xff6f (correct), ack 484, win 254, length 0
       14:44:54.359518 IP (tos 0x0, ttl 128, id 17492, offset 0, flags [none], proto UDP (17), length 202)
       192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
       14:44:54.359541 IP (tos 0x0, ttl 128, id 17493, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:54.359640 IP (tos 0x0, ttl 64, id 23821, offset 0, flags [DF], proto UDP (17), length 210)
       192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
       14:44:55.068278 IP (tos 0x0, ttl 128, id 17495, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:55.759031 IP (tos 0x0, ttl 128, id 17497, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:57.135012 IP (tos 0x0, ttl 128, id 17504, offset 0, flags [none], proto UDP (17), length 202)
       192.168.1.215.138 > 192.168.1.255.138: NBT UDP PACKET(138)
       14:44:57.135046 IP (tos 0x0, ttl 128, id 17505, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:57.135157 IP (tos 0x0, ttl 64, id 24435, offset 0, flags [DF], proto UDP (17), length 210)
       192.168.1.4.138 > 192.168.1.215.138: NBT UDP PACKET(138)
       14:44:57.885119 IP (tos 0x0, ttl 128, id 17507, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
       14:44:58.638794 IP (tos 0x0, ttl 128, id 17509, offset 0, flags [none], proto UDP (17), length 78)
       192.168.1.215.137 > 192.168.1.255.137: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST





      networking server samba




      networking server samba






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      CIAduck

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