Can anyone tell me what sort of overhead 3DES (ESP) puts on an IP packet?
From memory, theres 50-73 additional bytes and I recall that it must be in increments of 8 but I dont understand the huge variation (50-73).
Can I accurately calculate the overhead of 3des over IP?
The overhead depends on the transform set.
for esp-3des esp-md5-hmac, esp-des esp-md5-hmac, esp-3des esp-sha-hmac, esp-des esp-sha-hmac the overhed will be 50-57bytes