Junos OS

Folks,

I  have a question, a client wants to establish a ppt session between a client and server, however, this connection goes through CGNAT. At this point this session(pptp) is not working so I wonder if this sort of session is supported or does exit a workaround for it? 

Thanks.

Hello Mrandersono:

According to the documentation, the MS-MIC does support the PPTP ALG:

https://www.juniper.net/documentation/en_US/junos-space-apps/edge-services-director1.0/topics/topic-map/nat-junos-cgn-implementations.html#jd0e852

Moreover, that document says the PPTP ALG is enabled by default (see Table 3 in there), so you should not need to do anything beyond the usual CGNAT configuration to have that ALG active. 

However, I never played with such a configuration scenario. Perhaps someone else could say if this application scenario has been successfully tested.

Regards, Rogelio

Hello,

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@ralvez wrote:

 

Moreover, that document says the PPTP ALG is enabled by default (see Table 3 in there),

 

 

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No it is NOT enabled by default. All this table 3 says is that PPTP ALG code is available on MS-MPC and the default name for this ALG is "junos-pptp"

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@mrandersono wrote:

Folks,
 At this point this session(pptp) is not working so I wonder if this sort of session is supported or does exit a workaround for it? 

You don't need a workaround, You just need to enable PPTP ALG in Your NAT rule. Example confiig:

set services nat rule BLAH term 1 from application junos-pptp
set services nat rule BLAH term 1 then translated <etc etc>
<other NAT rule terms to follow>

HTH

Thx

Alex

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@aarseniev wrote:

Hello,

 

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@ralvez wrote:

 

Moreover, that document says the PPTP ALG is enabled by default (see Table 3 in there),

 

 

---

 

No it is NOT enabled by default. All this table 3 days is that PPTP ALG code is available on MS-MPC and the default name for this ALG is "junos-pptp"

 

 

 

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@mrandersono wrote:

Folks,
 At this point this session(pptp) is not working so I wonder if this sort of session is supported or does exit a workaround for it? 

 

You don't need a workaround, You just need to enable PPTP ALG in Your NAT rule. Example confiig:

 

set services nat rule BLAH term 1 from application junos-pptp
set services nat rule BLAH term 1 then translated <etc etc>
<other NAT rule terms to follow>

 

 

HTH

Thx

Alex

 

 

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Thanks, mate, I'll be working on it, I'll be in touch soon.