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Bronze

access-class 23

Hi,

I placed Cisco 1841 router at remote site and i forgot to remove the access class 23 which permits telnet sessions only from 10.10.10.0 0.0.0.7 by default.

Can i access the router remotly by anyway or i need to visit that site ? :(

No PCs installed with the router LAN

thanks in advance

Abd Alqader

1 ACCEPTED SOLUTION

Accepted Solutions

Re: access-class 23

Hi there,

I think its doable, configure a loopback with an ip in that range 10.10.10.0/29 (and insure appropriate routing for this ip to reach your router, hoping that your router has a default route or something pointing it back), and use this command:

telnet /source-interface loopback x

HTH, please rate if it does,

Mohammed Mahmoud.

8 REPLIES

Re: access-class 23

Hi there,

Sorry to say that but i don't think that there is any solution except trying by any mean to connect to the router via an ip in this range.

HTH,

Mohammed Mahmoud.

New Member

Hi There,

Hi There,

To access remotely we need to remove access-class 23 in under VTY or not.

In my configuration under vty avalable below cammand.

Line vty 5 15

access-class 23 in

can we make it below to access remotly.

no access-class 23 in

Regards,

Ashfaq Ahmed

Cisco Employee

Re: access-class 23

The only way would be to access the router from a station with an IP address in the range 10.10.10.0/248.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Cisco Employee

Re: access-class 23

Oops, Sorry I meant /29 or 255.255.255.248 ;-)

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Bronze

Re: access-class 23

Thanks, if Extended telnet is available like the extended PING i can create a loopback interface and initiate an extended telnet session.

I think i can create a new VLAN at my core switch with this subnet 10.10.10.0/29, right?

Thanks

Re: access-class 23

Hi there,

I think its doable, configure a loopback with an ip in that range 10.10.10.0/29 (and insure appropriate routing for this ip to reach your router, hoping that your router has a default route or something pointing it back), and use this command:

telnet /source-interface loopback x

HTH, please rate if it does,

Mohammed Mahmoud.

Bronze

Re: access-class 23

Thanks,,, yes it is doable.... Done :)

Re: access-class 23

Hi there,

You are welcomed, i am really glade that you didn't have to go there by your self :)

BR,

Mohammed Mahmoud.

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