Notes that may help others going down this path.. Making sense of the software, the process, getting it to work first time. this means NetBIOS is enabled. You could also set user authentication on that share (through samba) and thus only make it accessible for teachers. 3. With the PCs dealt with, we've just got left, discovery of the TrueNAS server (and any other non-Windows devices offering SMB/CIFS shares+printers). Samba is an implementation of the SMB/CIFS protocol for Unix systems, providing support for cross-platform file sharing with Microsoft Windows, OS X, and other Unix systems. BoxAdcontent.document.write("<\/body><\/html>"); You can quickly check that Windows systems are free of WINS, by forcing them to disconnect/reconnect from the network (disconnect/reconnect to Wifi. Since NetBIOS discovery is not supported by Windows anymore, wsdd makes hosts to appear in Windows again using the Web Service Discovery method. Netbios is the only available form of browsing in all windows versions except for 2000 and XP. (indeed samba seems to work perfectly fine if I add "smb ports = 445" too). Thank you for helping keep Tek-Tips Forums free from inappropriate posts.The Tek-Tips staff will check this out and take appropriate action. disable netbios = Yes. patch to fix winbindd when no netbios support is enabled (6.04 KB, patch) 2005-02-10 15:50 UTC , Gerald (Jerry) Carter (dead mail address) no flags Next, reboot Windows. Discovering, Enabling, and Disabling Trust Domains To keep the AD-defined values, you must disable ID mapping in SSSD. *Tek-Tips's functionality depends on members receiving e-mail. MOSFET is getting very hot at high frequency PWM. In the same vein as your cross-flashing resource, this is an outstanding write-up. disable netbios = yes apply Disabling NetBIOS NetBIOS can be disabled via DHCP or explicitly configured in the network adapter. Where Samba is used as an Active Directory domain member server (DMS) it is possible to configure Samba to not use NetBIOS over TCP/IP. set / Samba is included in most Linux distributions. Use the following commands: To revert the above change, run the following commands: To disable netbiosd name registration, run the following command: To verify that netbiosd isn't running, run the following command. Another top password manager is doing away with passwords, Ask these questions before you make your Lensa Magic Avatars, Sonos and IKEAs latest Symfonisk collab is yet another lamp-speaker hybrid, LG C3 OLED TV: 4 upgrades we expect to see, AWS re:Invent 2022: All the news, updates and more, Heres how to get the ultimate home theatre experience for an incredibly low Black Friday price, This incredible XL Air Fryer is the perfect air fryer for your family, Microsoft Teams will finally be a lot easier to use on iPad and iPhone, 'Never doubt James Cameron': Avatar 2 first critical reactions call it a 'visual masterpiece', The best tech tutorials and in-depth reviews, Try a single issue or save on a subscription, Issues delivered straight to your door or device. It assumes that each messaging over UDP, as well as Active Directory communication technologies. Not all the options listed below are needed or desirable: NetBIOS over TCP/IP is enabled and the other when it has been disabled in the TCP/IP DSM 7.0: Go to Control Panel > File Services > SMB > Advanced Settings > Others to find the checkbox. Manage SettingsContinue with Recommended Cookies. Important: The Samba domain controller will become your DNS resolver for all domain-joined workstations. The standard case is that the NetBIOS host name and the DNS host name are identical. You can also disable Netbios if you're not using it through the tcp/ip service in the Network Connections icon in the Windows control panel. These days, NetBIOS generally refers to the NetBIOS over TCP/IP protocol, which is considered a legacy protocol. Thanks for contributing an answer to Server Fault! Also, if any of the servers reject the given password, the connection automatically failsSamba will not attempt another server. Future US, Inc. Full 7th Floor, 130 West 42nd Street, To learn more, see our tips on writing great answers. BoxAdcontent.document.write("
"); Windows 2000 and above does enable NetBIOS over TCP/IP, but if you switch to Native mode no Windows 9X machines on the network, then Active Directory uses just DNS for name resolution. These legacy protocols had been inherited from previous products such as MS-Net for MS BoxAdcontent.document.write(" <\/scr'+'ipt>');"); Samba Samba Linux windowsubuntusamba sambasamba: Samba/ Linux - andriod2012 - It was recommended we disable NetBIOS under TCP/IP for security reasons, and have devices get DNS from our local DNS servers only. authenticate each other. Should you need it, however, enabling NetBIOS requires other changes to smb.conf: [global] # NetBIOS identification workgroup = WORKGROUP netbios name = MYHOST wins support = Yes. Try setting 'server min protocol = SMB3' & 'client min protocol = SMB3'. 1. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I need to get a pcap for SMB2, but I have disabled NetBIOS in the config and that seems OK but I notice that Samba is listening on 139. Or, as Microsoft (as they now were) blithly put it, in a footnote, ". Access Windows 10 Samba Share from Linux commandline with minimal SMB2. This means that Explorer Network can no longer display Windows computers through the legacy NetBIOS datagram browsing method. Accordingly, the fully qualified DNS host name consisting of the DNS host name and DNS domain must not be used in the NetBIOS name Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? The LAN Manager OS/2 operating system was co-developed by IBM and Microsoft, using the Server Message Block (SMB) protocol. I didn't find anything about disabling netbios in man smbclient and man mount.cifs. Is it appropriate to ignore emails from a student asking obvious questions? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Two Questions: Reply Helpful. Prior to Windows 2000, connections were only made via NetBIOS, which connects to port 139 on the server. Then, try to disable the account again. This is one reason why sysadmins hate NetBIOS, and why you should disable it unless you really need it. BoxAdcontent.document.write(""); Select the 001 Microsoft Disable Netbios Option check box, under the Available Options column. This article is intended for enterprise and education system set / To disable SMB 1, add the following line to the /etc/nsmb.conf file: To disable NetBIOS, add the following line to the /etc/nsmb.conf file: apply When you purchase through links on our site, we may earn an affiliate commission. It also allows the Samba server to be found by other computers on the network. Disable the systemd-resolved service by running the command below. }, Published under the terms fo the GNU General Public License. BoxAdcontent.document.write("BC"); host: Do a standard host name to IP address resolution, using the system /etc/hosts, NIS, or DNS lookups.This method of name resolution is operating system dependent, for instance Is it actually used for something when netbios is disabled? It is nmbd that provides the NetBIOS naming and WINS services. Disconnect vertical tab connector from PCB, If he had met some scary fish, he would immediately return to the surface. Remove or disable computer account from the directory while leaving the realm. Maybe you're using WINS. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. To roeleboel: You make some excellent points. If you need NetBIOS, then the final piece required to support it is to run Samba's nmbd process as well as its smbd process. Come for the solution, stay for everything else. To create one and apply both of the above changes, use the following Terminal commands: To revert the above changes, you can delete the/etc/nsmb.conffile safely. The servers identified by the password server option are given as NetBIOS names, not their DNS names or equivalent IP addresses. Modified 1 year, 11 months ago. Samba Administration Guide - NetBIOS Over TCP/IP Disabled How Does a Workstation find its Domain Controller? Using Samba for Active Directory Integration" Collapse section "4. An MS Windows NT4/200x/XP Professional workstation in the realm quenya.org i intend to disable netbios could your clarify the following points for me, do i put the following lines in my smb.conf on the domain controllers,member server or both ? Suppose you download it to. For example, you could also start the samba server by using these two commands together: The registry edits/commands are either of these, as you prefer: If you have used WINS, you'll also want to switch that off as well. Learn how to disable SMB 1 or NetBIOS to prevent failover. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Not exactly the question you had in mind? Next, start the SMB and NMB daemons. re-querying DNS servers for the _ldap._tcp.pdc._msdcs.quenya.org record. Samba SambaLinuxUNIXSMBSMBServer Messages Block BoxAdcontent.document.write("<\/script>"); edit your rc/init scripts that launch smbd and nmbd so they don't run nmbd. nmbd is the automatic discovery component of samba. Disabling it will cut down on the traffic. In Debian at least, you could use the option 'disable netbios = yes' in your smb.conf file. In the Data entry area, type 0x2 in the Long box, and then select OK. This highest threat from this vulnerability is to system availability. Of course Active Directory has to be running, and this of course means a Domain Controller ugh! In this case, the Nmbd server provides name resolution services for NetBIOS names, allowing it to act as a WINS server. It used to be essential in a Windows network, but is no longer necessary unless older versions of Windows are involved, but you still need it if you want clients running operating systems prior to Windows 2000 to be able to access your shares. netbios-ssn 139/tcp # (NBT over IP) NETBIOS session service netbios-ssn 139/udp. Select the Advanced tab, and then select Microsoft Windows 2000 Options in the Vendor class list. Enabling this parameter will disable netbios support in Samba. When I try to mount share, I run a wireshark and I still get SMB2 packages via NetBIOS. But if it is, then the rules you need are: Incoming and outgoing multicast traffic on port 3702 allowed. This will make /tmp on the server available as a Samba share over TCP/IP. wins support. Do bracers of armor stack with magic armor enhancements and special abilities? To disable Samba autostart on Ubuntu, open the Samba configuration file in a text editor. by doing a NetBIOS name query for the group name MIDEARTH<1C>. I have a command that can disable this remotely on all AD devices, but the issue is that only PC's connected to the network at the time of me running the script will respond. Registration on or use of this site constitutes acceptance of our Privacy Policy. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions. Active DirectorySambaSambaSambaWindowsSambaLinux Copyright 1998-2022 engineering.com, Inc. All rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission. Thanks to both of you. (You can also restart Samba if you want to be sure the NAS has ditched WINS as well, but just restarting Samba should be enough), You can test your work in a couple of other ways - and I'd suggest it's worthwhile to do so. The DNS domain does not make sense in the NetBIOS name space. You are right about them guessing a path, but we have disabled Explorer, Internet Explorer, and the run command. Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks.. All reasonably modern server operating systems, including Samba, support NetBIOS over TCP/IP (NBT). New York, If you have set up your Mac computer to be a file server in file-sharing preferences, you can disable SMB 1 while continuing to allow SMB 2 and 3 connections. This service is unsuitable for Samba, and you must disable it and manually configure the DNS resolver instead. This can be useful in order to turn off multiple settings at once. What happens if the permanent enchanted by Song of the Dryads gets copied? I'm using the "standalone server" server role, so I can disable NetBIOS completely, and without NetBIOS and SMB1 there's no need to listen on anything other than TCP/445. Specify the name as a string of 15 or fewer characters that is a valid NetBIOS computer name. Samba can also function as a domain controller or member server in both NT4-style and Active Directory domains. function writeBCBoxAdContent() { Examples of frauds discovered because someone tried to mimic a random sequence. ; read only - Whether the users specified in the valid users list are able to write to As a result it may be required to assign this IP address outside of your DHCP pool; Disable tools, such as resolvconf, that automatically update your /etc/resolv.conf DNS resolver configuration file. Already a member? microsoft-ds 445/tcp # (SMB over IP) If you are using Active Directory (used when SMB is used directly on TCP stack, rev2022.12.11.43106. For me, it was working *better* than before - more snappily, all PCs showing up for the first time. /* We haven't got TrueNAS on board yet, so for now, that computer will be missing. Disabling NetBIOS for Samba SMB2. Untick the Enable Local Master Browser checkbox if you cannot disable the account. Name lookups will resolve without a WINS server, but only within the local subnet - if a client is unable to resolve a NetBIOS name using a WINS server then it will resort to broadcasting "where are you?" of the machines it gets back from the queries is a domain controller and can answer logon Here are smb.conf server directives to get you started with those changes: [global] server string = Samba. You can disable SMB 1 or NetBIOS to prevent this failover. WINS is the Windows Internet Name Service, Microsoft's implementation of a NetBIOS Name Service, and it provides a similar service for NetBIOS names that a DNS provides for domain names (mapping host names to network addresses). The SMB1 protocol was created in 1983 at IBM and Microsoft began to fade out support for the product in 2017 with the release of the Fall Creators Update for the company's Windows 10 operating system. This tells Samba to use NetBIOS to make itself known on the Windows network in its default workgroup (Windows machines default to a workgroup called WORKGROUP) and to act as a WINS server. netbios name. */ It offers name resolution, file and printer sharing with devices that do not have DNS capabilities. All rights reserved. --no-password Perform the join automatically without a password. Samba %m. d.add ProtocolVersionMap # 7 Confirm that its been disabled by going to Start > Run > cmd > nbstat -n. How do I disable NetBIOS over Tcpip? You can also read plenty on the internet on how NetBIOS is insecure. First, in WIndows Explorer, select ", There's only one last thing to do - on any non-Windows platforms offering SMB/CIFS shares (TrueNAS etc, but also any other *nix systems you operate), you'll want to. This might seem weird, but it is consistent with the way Windows works. Step 1: Install Samba in Linux. We and our partners use cookies to Store and/or access information on a device.We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.An example of data being processed may be a unique identifier stored in a cookie. Do non-Segwit nodes reject Segwit transactions with invalid signature? It only takes a minute to sign up. SMBv1 can still be reinstalled in all editions of Windows 10 and Windows Server 2016. A user with a Windows username that Samba does not recognise will not need to provide credentials to access the share, and they will be authenticated as the guest user. BoxAdcontent.document.write(""); sambaSambaLinuxUNIXSMB SMB Server Messages Block To disable SMB 1, add the following line to the /etc/nsmb.conf file: To disable NetBIOS, add the following line to the /etc/nsmb.conf file: The /etc/nsmb.conf file doesn't exist by default. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Register for the iXsystems Community to get an ad-free experience. messages on the network. BoxAdcontent.document.write("<\/head>"); Please let us know here why this post is inappropriate. netbios-dgm 138/tcp # (NBT over IP) NETBIOS Datagram Service netbios-dgm 138/udp. I did disable netbios on server and client. Login. nmbd: This daemon provides NetBIOS name service, listens for name-server requests. This may result in access denial due to the lack of permissions. I need to get a pcap for SMB2, but without using NetBIOS as a transport (Direct TCP connection). Right-click on your network interface and click on Properties. A bit about SSD perfomance and Optane SSDs, when you're planning your next SSD. My experiments in building a home server capable of handling fast + consistent deduplication, Detailed newcomers' guide to crossflashing LSI 9211/9300/9305/9311/9400/94xx HBA and variants, Normal Network Neighbourhood discovery using NetBIOS is often. BoxAdcontent.document.close(); When not using NetBIOS/WINS host name resolution, it may be preferred to disable this protocol: /etc/samba/smb.conf [global] disable netbios = yes dns proxy = no. host: Do a standard host name to IP address resolution, using the system /etc/hosts, NIS, or DNS lookups.This method of name resolution is operating system dependent, for instance How to Install Samba Server on CentOS 8/RHEL8. Add a comment. The options have the following meanings: [users] and [josh] - The names of the shares that you will use when logging in. To stop samba use: /etc/rc.d/rc.samba stop To start samba from a stopped state use: /etc/rc.d/rc.samba start The rc.samba script described above is merely a convenient wrapper for the /usr/sbin/smbd and /usr/sbin/nmdb commands. More information regarding this subject may be found in path - The path to the share. Server role the tool automatically populates the server role as a domain controller (dc). ; browseable - Whether the share should be listed in the available shares list. You. 'min protocol' is a synonym for 'server min protocol', 'protocol' is a synonym for 'server max protocol', there are a couple of others 'client min protocol' & 'client max protocol'. When not using NetBIOS/WINS host name resolution, it may be preferred to disable this protocol: /etc/samba/smb.conf [global] disable netbios = yes dns See smbd (8) for details. If you want to make your server accessible via NetBIOS host name, set the desired name in the netbios name option in smb.conf and enable/start nmb.service. See nmbd (8) for details. Note: nmb.service is not required. However, it is needed to access Samba servers by hostname (e.g. smb://hostname/) for some hosts. As you would expect, shares can be configured so that authentication is required to access them. Also, incoming TCP traffic (and related outgoing traffic) on port 5357 must be allowed. DNS and Active Directory. requests. Specify the server netbios name (RFC1001 name) to use when attempting to setup a session to the server. NetBIOS over TCP disabled -- no workgroup available now when I modify the disable netbios parameter to yes : disable netbios = yes the smbclient command fails : [***@matisse ~]# smbclient -L matisse -W linuxvirt -U root%install session setup failed: NT_STATUS_NO_LOGON_SERVERS maybe this is completely normal, but then does it mean Thanks. BoxAdcontent.document.write(""); There are two different mechanisms to locate a domain controller: one Ports. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. NetBIOS () Samba 445 To access it, use Windows Explorer to browse to the Samba server (use either its name or IP address). Already a Member? Note to Alf666. Disable NetBIOS over TCP/IP using SAMBA Background We are a small school trying to save money. Promoting, selling, recruiting, coursework and thesis posting is forbidden. I Thank you. Not sure if it was just me or something she sent to the whole team, Concentration bounds for martingales with adaptive Gaussian steps. By joining you are opting in to receive e-mail. This requires a database of users to authenticate. I have a linux sever and few win clients all running winXP, so I don't need netbios. function writeTribalBoxAdContent() { Click on the WINS tab and select Disable NetBIOS over TCP/IP. The students were trying to use the bowse freature in Microsoft Word, under file open. Disable: Set-SmbServerConfiguration -EnableSMB2Protocol $false; Enable: Set-SmbServerConfiguration -EnableSMB2Protocol $true; Windows 8.1 and Windows 10: Click Here to join Tek-Tips and talk with other members! A control to disable Samba's NetBIOS name server ('nmbd', handles NetBIOS discovery) will be added in 11.2-U3) If you have custom Samba config, be sure to also remove Starting with Windows 2000, connections are made using both NetBIOS and TCP/IP, the latter connecting to port 445 on the server. After that the workstation sends the user's credentials (name and If you're running samba server on your Slackware box on a windows network / domain, and you don't want it showing up on the windows computers network neighborhood > Good afternoon even disabling the netbios "disable = yes netbios" he continues using the netbios. Here are the commands: If you check the init Finally disable/stop winbind.service. The discovery mode searches for other WSD servers in the local subnet. . Take one extra minute and find out why we block content. There are two different mechanisms to locate a domain controller: one method is used when Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. A Samba DMS can integrate fully into an local user to be authenticated has to find the domain controller for MIDEARTH. Right-click the local area connection that you want to be statically configured, and then click Properties. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The Three Daemons Of Networking: Nmbd, Smbd, And Winbindd. BoxAdcontent.document.write("\/\/-->"); To get started out with Samba, install the Samba core packages including the client package: $ sudo dnf install samba samba-common samba-client Click on Start > Run > cmd. Received a 'behavior reminder' from manager. Make sure that Default User Class is selected in the User class list. The NetBIOS name is the equivalent of a host name - it does not need to be the same as the host name, but that is customary. If it's allocated via your router using DHCP, clear that setting. BoxAdcontent.document.close(); NetBEUI itself is not required for NetBIOS communication. You are using an out of date browser. Ask Question. Just came across this and it is such a great wealth of knowledge nicely written and condensed in to useful and applicable steps. Heres how it works. 1996-2022 Experts Exchange, LLC. If it's statically defined in Network Adapter Properties, clear those settings. None of these changes will have much effect, until you do. This program is part of the samba (7) suite. Delete name is for unregistering a NetBIOS name, whether it be a name or group Find name is for looking up a NetBIOS name on the network The session services allow these primitives: Call to start a session through the NetBIOS name Listen will see if an attempt can be made to open the session Hang Up is used to close a session macOS will attempt to use the later versions of SMB, as well as DNS and port 445, with failover to port 139 and SMB 1 as needed. Enabling this parameter will disable Samba's support for the SPOOLSS set of MS-RPC's and will yield identical behavior as Samba 2.0.x. Mount the share using mount.cifs as type. Turn off netbios in Samba - slackware 13.1. If you're running samba server on your Slackware box on a windows network / domain, and you don't want it showing up on the windows computers network neighborhood browser, there's a couple of things you have to do. First, add the line: disable netbios = yes to the global section of smb.conf. If you don't want NetBIOS, then the following additions to the [global] section of smb.conf will make this explicit: [global] # disable NetBIOS disable netbios = yes smb ports = 445. All of life is about relationships, and EE has made a viirtual community a real community. Where NetBIOS over TCP/IP is disabled, all name resolution involves the use of DNS, broadcast get / I believed that port 139 was only for netbios. Use this command to disable the Samba service: update-rc.d -f smbd defaults. Asked 1 year, 11 months ago. In Samba 4.0, this has been How to make voltage plus/minus signs bolder? If you used or wanted Network Neighbourhood to "just work", you could choose between enabling SMB1 and getting hacked or ransomed, or disabling SMB1 and havinbg Neighhbourhood not work at all. We get it - no one likes a content blocker. Changing the Default Group for Windows Users 5.3.4.2. Includes EFI and OEMs. In a registry editor file or command prompt, run either of these as you prefer: Next, ensure the services that WSD relly on, are run automatically. CVE-2018-7445 It should. Visit our corporate site (opens in new tab). Nov 8, 2006 1:47 PM in response to BDAqua. Microsoft announced plans to disable SMB1 (Server Message Block) in Windows this week. lmhosts: Lookup an IP address in the Samba lmhosts file.If the line in lmhosts has no name type attached to the NetBIOS name (see the lmhosts (5) for details) then any name type matches for lookup. network configuration. server string. Samba configured for use 445 port instead of NetBIOS API. Because the Computer Browser service relies on SMBv1, the service is uninstalled if the SMBv1 client or server is uninstalled. nmbd is a server that understands and can reply to NetBIOS over IP name service requests, like those produced by SMB/CIFS clients such as Making statements based on opinion; back them up with references or personal experience. NY 10036. Just remember to keep an eye out for students using macros within office, as these can bypass all the lockouts you've described above. I haven't yet figured the neatest way to package and daemonise wsdd if needed, but you can test + run it manually from the command line pretty easily. quit, get / Any files they write there will have their user and group ID set to 'nobody'. We have received your request and will respond promptly. BoxAdcontent.document.write("<\/head>"); Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties. } This is the first area where the Active Directory setup differs from the classic setup. This is beneficial for devices running Samba, like NAS or file sharing servers on your local network. Start the Samba daemon, smbd, to make this share accessible on Windows. I have a linux sever and few win clients all running winXP, so I don't need netbios. BoxAdcontent.document.write(""); Click OK. It's worth understanding how connections are made from the client side. A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. How to disable SMB 1 or NetBIOS in macOS. This article describes how to integrate an Arch Linux system with an existing Windows domain network using Samba.. Before continuing, you must have an existing Active Directory domain, and have a user with the appropriate rights within the domain to: commit I set "disable In Sharing>Firewall>New , click on Port Name drop down, and there's an SMB (without NetBios) option! [global] server string = samba_server server role = standalone server interfaces = lo your_network_interface bind interfaces only = yes disable netbios = yes smb ports = 445 log file = /var/log/samba/smb.log max log size = 10000 These directives specify the following: server string - This is the identifying information that will be supplied to users during connections. Why is Singapore currently considered to be a dictatorial regime and a multi-party democracy by different publications? By setting to no other users will not be able to see the share. In this guide, we will walk you through the installation of the Samba Server on RHEL-based distributions such as CentOS Stream, Rocky Linux, and AlmaLinux. If you don't want NetBIOS, then the following additions to the [global] section of smb.conf will make this explicit: [global] # disable NetBIOS disable netbios = yes smb ports = To install Samba on CentOS 8/RHEL8, run the following command in terminal. It does this Why do quantum objects slow down when volume increases? Possible values include samba or adcli. * Remove unused and outdated debian/README.debian (debian/README.Debian is used instead) * Mask services as appropriate in samba and winbind postinst (Closes: Both sides on Linux. The client closes its NetBIOS connection on port 139 if the server responds to the TCP/IP connection. This is actually a nice link for all sorts of other stuff, but did not help much in this case. BoxAdcontent.document.write("