52 tcp/udp xns-time XNS Time Protocol SANS Internet Storm Center activity for port 52
53 tcp/udp domain Domain Name Server (DNS) - DNS servers offer different services on TCP and UDP. TCP is used for zone transfers of full name record databases - while UDP is used for individual lookups. - Security Concerns: - Zone Transfers give away entire network maps; high value to attackers - DNS (BIND) is a popular target - since DNS servers must exist - must be reachable - and exploits usually result DOS or root Keep BIND version/patches current (refer to www.isca.org). Use split-DNS SANS Internet Storm Center activity for port 53
53 udp domain domain-domain name server SANS Internet Storm Center activity for port 53
54 tcp/udp xns-ch XNS Clearinghouse SANS Internet Storm Center activity for port 54
55 tcp/udp isi-gl ISI Graphics Language SANS Internet Storm Center activity for port 55
56 tcp/udp xns-auth XNS Authentication SANS Internet Storm Center activity for port 56
57 tcp/udp terminal-any Any Private Terminal Access SANS Internet Storm Center activity for port 57
57 udp priv-term priv-term-any private terminal access SANS Internet Storm Center activity for port 57
58 tcp/udp xns-mail XNS Mail SANS Internet Storm Center activity for port 58
59 tcp/udp dialout-any Any Private File Service SANS Internet Storm Center activity for port 59
59 tcp/udp priv-file priv-file-any private file service SANS Internet Storm Center activity for port 59
61 tcp/udp ni-mail NI MAIL SANS Internet Storm Center activity for port 61
62 tcp/udp acas ACA Services SANS Internet Storm Center activity for port 62
63 tcp/udp whois++ whois++ SANS Internet Storm Center activity for port 63
64 tcp/udp covia Communications Integrator (CI) SANS Internet Storm Center activity for port 64

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Total Records 3780



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