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NTP port opening

Home Forums Networking Cisco Security – PIX/ASA/VPN NTP port opening

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    wouria
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    #164996

    Dear Friends

    I would like to open NTP port 123 in ASA 5520 for my local server to sync with its time and by writing down below ACL.

    access-list inside_access_in extended permit udp any any eq 123
    access-group inside_access_in in interface inside

    Is it going to solve my problem I can ping the mentioned server pool.ntp.org or IP 173.255.230.140 but when I point my server to that by using their IP 173.255.230.140 it is giving me unaccessible message and Is there anyway that I can test that opening port of 123 is working after applying below commands.

    access-list inside_access_in extended permit udp any any eq 123
    access-group inside_access_in in interface inside

    thanks in advance

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