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Mac and port 456 blocked

Discussion in 'Security' started by Hedloff, Jun 21, 2010.

  1. Hedloff

    Hedloff Well-Known Member

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    Have alot of customers with Mac having problems with getting blocked in CSF by port 456:

    Jun 18 00:38:58 cpanel23 kernel: Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC=a4:ba:db:39:08:f0:00:24:f7:37:ab:c3:08:00 SRC=84.202.121.96 DST=88.87.44.74 LEN=64 TOS=0x00 PREC=0x00 TTL=54 ID=39964 DF PROTO=TCP SPT=46179 DPT=456 WINDOW=65535 RES=0x00 SYN URGP=0

    Is there anyway to fix this issue without allowing this port in csf? Is there anyway for the mac user to turn off this port? What do you usally do with Mac users?
     
  2. sparek-3

    sparek-3 Well-Known Member

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    What service are you running on your server on port 456?
     
  3. Hedloff

    Hedloff Well-Known Member

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    We have no services running on that port, but why does Mac keep connecting to this port? And what program on Mac does this?
     
  4. Lyttek

    Lyttek Well-Known Member

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    Ummm...

    MAC doesn't refer to Apple computers... that's the "MAC Address" of the network item connecting...

    MAC address - Wikipedia, the free encyclopedia


    Having said that.... did they set their mail programs incorrectly, as port 456 could be a transposition of 465 for an outgoing server...
     
    #4 Lyttek, Jul 1, 2010
    Last edited: Jul 1, 2010
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