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default open ports on cisco router

Dears,

what is the default services allowed on cisco routers??I noticed that only http service is allowed when I tried to use other services that use other ports like 8585 I see connection failed????

any help

4 REPLIES

Re: default open ports on cisco router

There are some default servcies like finger, http etc enables by default on Cisco routers.

Have a look at the following document for improving security on routers which discusses diabling unused servies

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080120f48.shtml

HTH

Narayan

New Member

Re: default open ports on cisco router

Thanks royalblues for your reply,,

but I have two cisco routers connected to the same firewall ,,I noticed that some TCP ports are not allowed on the second router so when my traffic directed to the second router only http services is allowed?????

Re: default open ports on cisco router

That could depend on whether both devcies are running same code, are of same platform and have identical configurations.

One thing to note is that these services should not affect the traffic that is flowing through the router (unless u have some sort of access-lists) but only traffic directed to your router

Narayan

New Member

Re: default open ports on cisco router

no access-lists were applied to interfaces???is there any other config that my block some ports??

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