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Urgent problem with printing large files via VPN Site2Site

GernotMeyer

Hi together,

we have a Site2Site Tunnel between XG and UTM. All traffic is allowed between both networks.

Behind UTM is a terminalserver

Behind XG a printer

So printing normally is fine from terminalserver (behind UTM) to printer (behind XG).

Often (not always) printing doesn't work and I see entries in FW log:

from terminalserver to printer port 9100 Invalid TCP RST...

Ideas?



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  • 0

    Hi GernotMeyer,

    Whenever you are not able to print, check #1 in my troubleshooting guide and verify the packet filter and drop-packet-capture logs on the printer's IP address, if the packet is forwarded to the printer. Also, check web filter and application filter logs for the destination IP address.

    Thanks,

    Sachin Gurung
    Team Lead | Sophos Technical Support
    Knowledge Base  |  @SophosSupport  |  Video tutorials
    Remember to like a post.  If a post (on a question thread) solves your question use the 'This helped me' link.

  • 0 in reply to sachingurung

    Sachin, thanks for reply and sorry for delayed answer.

    I used Paket Capture to look what'S happening and figured out that dropped pakets do not have a IP header and neither in nor out interface:

    Source and DEstination MAC addresses are empty:

    Ethernet Header

    Source MAC Address:

    Destination MAC Address:

    Ethernet Type IPv4 (0x800)

     

    Generally source and destionation IP are always valid and correct.

     

    Any more ideas?

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