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VPN 代理服务器

VPN 代理服务器# EmergingNetworking - 热门网络技术

x*u2007-12-01 08:12

1 楼

最近从att&yahoo(DSL) 申请了7 个静态ip 地址，其中只有5个可用(att客户服务说的)
。我现在用一台台式机想作vpn代理服务器。找了国内的专门作vpn的公司。他们试了
几次(他们远程控制计算机) 来设置，都没有成功。他们说我的静态ip不行。他们要求
每个静态ip都必须在国内ping的到，而我的只有一个可以ping。我的计算机=装得是
2003 server standard edition. 计算机在自己家里，用的是2wire(2701) 上网。想问
问大家有什么好办法?

s*g2007-12-01 08:12

2 楼

I am lost, man, ATT gives you 7 (or 5) IP addresses, how do you expect any
one of them to be pingable if you don't assign them to active hosts?
And you are connecting your computer directly to Internet?! you will be
lucky if your computer does not die the first day.

的)

【在 x*******u 的大作中提到】

: 最近从att&yahoo(DSL) 申请了7 个静态ip 地址，其中只有5个可用(att客户服务说的)
: 。我现在用一台台式机想作vpn代理服务器。找了国内的专门作vpn的公司。他们试了
: 几次(他们远程控制计算机) 来设置，都没有成功。他们说我的静态ip不行。他们要求
: 每个静态ip都必须在国内ping的到，而我的只有一个可以ping。我的计算机=装得是
: 2003 server standard edition. 计算机在自己家里，用的是2wire(2701) 上网。想问
: 问大家有什么好办法?

z*r2007-12-01 08:12

3 楼

somebody needs to response the echo request right? so you have to have a pc
associated with the pingable IP as saiwong said.
as for the "only 5 IP's are usable to you", the reason is simple, basically
they assign a /29 subnet which has 8 IP addresses, however one of them is
the network address and another one is the broadcast address, so you
actually have 6 usable. but 5 makes sense too, because they may assign one
IP to your cable modem/router for management's purpose

的)

【在 x*******u 的大作中提到】

s*g2007-12-01 08:12

4 楼

ISP does not use IP for modem management, that IP is most probably used for
GLBP/VSRP (whatever FHRP) secondary, HSRP would need one more extra IP.

pc
basically

【在 z**r 的大作中提到】

: somebody needs to response the echo request right? so you have to have a pc
: associated with the pingable IP as saiwong said.
: as for the "only 5 IP's are usable to you", the reason is simple, basically
: they assign a /29 subnet which has 8 IP addresses, however one of them is
: the network address and another one is the broadcast address, so you
: actually have 6 usable. but 5 makes sense too, because they may assign one
: IP to your cable modem/router for management's purpose
:
: 的)

z*r2007-12-01 08:12

5 楼

if the modem is in the bridge mode, yes, probably there is another subnet
for this purpose, but in routing mode, very likely for static IP customers
he is just a soho subscriber, how come HSRP applies for him.

for

【在 s*****g 的大作中提到】

: ISP does not use IP for modem management, that IP is most probably used for
: GLBP/VSRP (whatever FHRP) secondary, HSRP would need one more extra IP.
:
: pc
: basically

s*g2007-12-01 08:12

6 楼

Why not? subscriber only sees an IP gateway, you don't know how ISP makes
this gateway redundant.
Anyway, I don't think this is the way how ISP allocate IP addresses to clients, since all traffic will be carried over PPPoEoA, what network mask OP gets does not really matter, traffic between those end hosts will be bridged to DSLAM and then routed back, he/she is essentially have a bunch of /32 addresses and he will not get an effective Ethenet LAN like connectivity between those hosts.
Make sens

【在 z**r 的大作中提到】

: if the modem is in the bridge mode, yes, probably there is another subnet
: for this purpose, but in routing mode, very likely for static IP customers
: he is just a soho subscriber, how come HSRP applies for him.
:
: for

z*r2007-12-01 08:12

7 楼

you sure what you are talking about? for a static IP subscriber, usually the
dsl modem is in routing mode or the subscribe has a bridged modem plus a
soho router, in either situation, customer doesn't pay the IP space which is
on provider side. so no matter what kind of redundant tech a provide uses,
it's transparent to a subscriber. by saying that, a customer gets what he
pays.
this customer may have multiple PC's or whatever, but these devices' default
gateway should be on the CE device that s

【在 s*****g 的大作中提到】

: Why not? subscriber only sees an IP gateway, you don't know how ISP makes
: this gateway redundant.
: Anyway, I don't think this is the way how ISP allocate IP addresses to clients, since all traffic will be carried over PPPoEoA, what network mask OP gets does not really matter, traffic between those end hosts will be bridged to DSLAM and then routed back, he/she is essentially have a bunch of /32 addresses and he will not get an effective Ethenet LAN like connectivity between those hosts.
: Make sens

s*g2007-12-01 08:12

8 楼

I am lost, man, maybe I should get a CCIE-SP also.

the
is
,
default
CE'

【在 z**r 的大作中提到】

: you sure what you are talking about? for a static IP subscriber, usually the
: dsl modem is in routing mode or the subscribe has a bridged modem plus a
: soho router, in either situation, customer doesn't pay the IP space which is
: on provider side. so no matter what kind of redundant tech a provide uses,
: it's transparent to a subscriber. by saying that, a customer gets what he
: pays.
: this customer may have multiple PC's or whatever, but these devices' default
: gateway should be on the CE device that s

z*r2007-12-01 08:12

9 楼

may be because it's too late now, hehe

【在 s*****g 的大作中提到】

: I am lost, man, maybe I should get a CCIE-SP also.
:
: the
: is
: ,
: default
: CE'